Sundaresan, US
Alamelu Sundaresan, Sugarland, TX US
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20090061479 | MINERALIZED THREE-DIMENSIONAL BONE CONSTRUCTS - The present disclosure provides ex vivo-derived mineralized three-dimensional bone constructs. The bone constructs are obtained by culturing osteoblasts and osteoclast precursors under randomized gravity vector conditions. Preferably, the randomized gravity vector conditions are obtained using a low shear stress rotating bioreactor, such as a High Aspect Ratio Vessel (HARV) culture system. The bone constructs of the disclosure have utility in physiological studies of bone formation and bone function, in drug discovery, and in orthopedics. | 03-05-2009 |
20100227358 | MINERALIZED THREE-DIMENSIONAL BONE CONSTRUCTS - The present disclosure provides ex vivo-derived mineralized three-dimensional bone constructs. The bone constructs are obtained by culturing osteoblasts and osteoclast precursors under randomized gravity vector conditions. Preferably, the randomized gravity vector conditions are obtained using a low shear stress rotating bioreactor, such as a High Aspect Ratio Vessel (HARV) culture system. The bone constructs of the disclosure have utility in physiological studies of bone formation and bone function, in drug discovery, and in orthopedics. | 09-09-2010 |
20110081682 | PRODUCTION OF BONE MORPHOGENIC PROTEINS (BMPS) USING A NOVEL TISSUE CULTURE PLATFORM - The present disclosure provides methods for producing Bone Morphogenetic Proteins (BMPs). The BMPs are produced using ex vivo-derived mineralized three-dimensional bone constructs of varying degrees of maturity and mineralization. The bone constructs are obtained by culturing osteoblasts and osteoclast precursors under randomized gravity vector conditions whereupon the bone constructs secrete BMPs into the culture medium. Culture medium is periodically removed from the bone construct culture, and the BMPs are purified from the removed culture medium. | 04-07-2011 |
20110082549 | MINERALIZED THREE-DIMENSIONAL BONE CONSTRUCTS FORMED FROM OSTEOBLASTS - The present disclosure provides ex vivo-derived mineralized three-dimensional bone constructs. The bone constructs are obtained by culturing osteoblasts under randomized gravity vector conditions. Preferably, the randomized gravity vector conditions are obtained using a low shear stress rotating bioreactor, such as a High Aspect Ratio Vessel (HARV) culture system. The bone constructs of the disclosure have utility in physiological studies of bone formation and bone function, in drug discovery, and in orthopedics. | 04-07-2011 |
20110086080 | EX-VIVO PRODUCTION OF HUMAN DEMINERALIZED BONE MATRIX - The present disclosure provides ex vivo-derived human demineralized bone matrix. The bone matrix is produced using mineralized three-dimensional bone constructs. The bone constructs are obtained by culturing osteoblasts and osteoclast precursors under randomized gravity vector conditions. Preferably, the randomized gravity vector conditions are obtained using a low shear stress rotating bioreactor, such as a High Aspect Ratio Vessel (HARV) culture system. The ex vivo-derived human demineralized bone matrix of the disclosure can be used in, for example, orthopedic and periodontal procedures. | 04-14-2011 |
20110091862 | GENERATION OF AN HLA-NEGATIVE OSTEOGENIC PRECURSOR CELL LINE - The present disclosure provides methods for producing human osteogenic cell lines in which HLA Class I expression is absent or reduced. The resulting osteogenic cells can then be used, for example, to form mineralized three-dimensional bone constructs which can be used, for example, in bone grafting procedures. The lack of HLA Class I expression in the cells of the mineralized three-dimensional bone constructs reduces or eliminates the potential for host-graft rejection. | 04-21-2011 |
20110129866 | NOVEL TISSUE CULTURE PLATFORM FOR SCREENING OF POTENTIAL BONE REMODELING AGENTS - The present disclosure provides methods for identifying candidate compounds having bone anti-resorption activity or bone pro-formation activity. The methods involve the use of ex vivo-derived mineralized three-dimensional bone constructs. The bone constructs are obtained by culturing osteoblasts and osteoclast precursors under randomized gravity vector conditions in the presence of the candidate compound. Preferably, the randomized gravity vector conditions are obtained using a low shear stress rotating bioreactor, such as a High Aspect Ratio Vessel (HARV) culture system. | 06-02-2011 |
20110217352 | DEVELOPMENT OF A HUMAN COLLOIDAL BONE GRAFT MATERIAL - The present disclosure provides colloidal bone graft compositions comprising a plurality of mineralized three-dimensional bone constructs, a polymerizable biocompatible matrix, an osteoblast differentiation agent, and at least one osteoblast mineralization agent. The colloidal bone graft compositions of the disclosure are used to perform bone grafts in human or animal patients. | 09-08-2011 |
20120058557 | Mineralized Three-Dimensional Bone Constructs - The present disclosure provides ex-vivo derived mineralized three-dimensional bone constructs. The bone constructs are obtained by culturing osteoblasts and osteclast precursors under randomized gravity vector conditions. Preferably, the randomized gravity vector conditions are obtained using a low shear stress rotating bioreactor, such as a High Aspect Ratio Vessel (HARV) culture system. The bone constructs of the disclosure have utility in physiological studies of bone formation and bone function, in drug discovery, and in orthopedics. | 03-08-2012 |
Arathi Sundaresan, Jersey City, NJ US
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20120274398 | RF AGC Control - Embodiments of the present invention may provide a signal processor with a wide gain range. The signal processor may comprise at least a discrete step gain stage and a continuous variable gain amplifier (VGA) stage. The discrete step gain stage may comprise a programmable gain amplifier (PGA) (e.g., low noise amplifiers | 11-01-2012 |
Ashok Sundaresan, Schenectady, NY US
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20120278012 | DEVICE AND METHOD FOR DETECTING AND LOCATING DEFECTS IN UNDERGROUND CABLES - A device and method for detecting and locating defects in a cable are provided. The device and method may include using sensor feedback to determine that an insulation defect exists and to calculate the location of the insulation defect in a cable. The method may include performing principle component analysis to determine whether an insulation defect occurs and using extracted data to determine the location of the insulation defect. | 11-01-2012 |
Bhuvana Sundaresan, Exton, PA US
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20150142508 | INCIDENT PLAYBOOK GENERATED IN REAL TIME FROM DISASTER RECOVERY PLAN EXTRACTIONS - Systems, methods and procedures enabling an incident planner to build and distribute disaster response playbooks to be used by incident responders. Information is excerpted from multiple plan documents (such as disaster recovery, crisis management, business continuity, or emergency response plans) that includes only what are the essential personnel contacts, tasks, and resources needed at time of disaster. | 05-21-2015 |
Karpagavalli Sundaresan, Chicago, IL US
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20130302896 | SOY-PROTEIN CONTAINING POROUS MATERIALS - Porous soy protein-based materials are provided. Also provided are tissue growth scaffolds comprising the porous soy protein-based materials. Methods for forming the porous soy protein-based materials and methods for growing tissue on the tissue growth scaffolds are also provided. The porous soy protein-based materials comprise a plurality of soy protein chains that are crosslinked in a three-dimensional structure that provides a high degree of porosity. In order to achieve highly porous structures, the soy proteins, which are globular in nature, can be partially denatured in order to facilitate crosslinking between, and entanglement of, the soy protein chains. | 11-14-2013 |
Karthik Sundaresan, Boulder, CO US
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20130067110 | DETERMINISTIC MAPPING - Network address translating is contemplated to be of a type where a network address translator (NAT), a carrier grade NAT (CGN), or other type of translator may facilitate reconstruction of translated addresses in a manner that ameliorates the amount of data that must be stored to facilitate the reconstruction. | 03-14-2013 |
20130208597 | NETWORK ADDRESS TRANSLATION - Address translation sufficient for use in translating addresses included in messages carried or otherwise transmitted between inside and outside network is contemplated. The contemplated address translation may facilitate operation of a network address translator (NAT), carrier grade network address translator (CGN), or other device similarly configured to facilitate translating inside addresses used to address messages carried over the inside network relative to outside addresses used to facilitate carrying messages over the outside network. | 08-15-2013 |
20130212299 | SELECTIVE NETWORK TRANSMISSION - Network transmission of messages is contemplated. The contemplated transmission may be facilitated a selectable one or more interfaces. The interfaces may be included as part of a gateway or other device tasked with facilitating network communications, such as but not limited to a gateway tasked with facilitate network transmissions between device connected to a home network and devices connected beyond the home network. | 08-15-2013 |
20140108624 | OVERLAY NETWORK - An overlay network is contemplated. The overlay network may be characterized as supporting, or at least virtually supporting, separate networks over a common infrastructure. The common infrastructure may be comprised of a plurality of routers or other devices configured to facilitate directing messages according to various addressing requirements. The use of the separate networks may be dictated according to the particular addressing requirements of each message desired for transport. | 04-17-2014 |
20140215038 | REVERSE PREFIX DELEGATION - Prefix delegation for Internet protocol (IP) prefixes or other types of prefixes. The prefix delegation resulting in multiple prefixes being delegated to internal routers and/or customer premise equipment (CPE) associated with a common link wherein at least two of the delegated prefixes are associated with different service providers. | 07-31-2014 |
20140237140 | NETWORK ADDRESS TRANSLATION - Address translation sufficient for use in translating addresses included in messages carried or otherwise transmitted between inside and outside network is contemplated. The contemplated address translation may facilitate operation of a network address translator (NAT), carrier grade network address translator (CGN), or other device similarly configured to facilitate translating inside addresses used to address messages carried over the inside network relative to outside addresses used to facilitate carrying messages over the outside network. | 08-21-2014 |
20140269703 | mDNS-DNS ARCHITECTURE - An architecture, such as but not necessarily limited to an architecture sufficient to facilitate service discovery within a network having two or more local area networks (LANs), is contemplated. The architecture may be employed in a router, gateway or other device configured to facilitate signaling between multiple routed networks, such as to facilitate service discovery across multiple routed networks. | 09-18-2014 |
Karthik Sundaresan, Howell, NJ US
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20120027117 | LINK LAYER MULTICASTING SYSTEMS AND METHODS - Beamforming systems and methods are disclosed. In accordance with one method, indications of channel matrices for a plurality of receivers are obtained. Further, a beamformer matrix is formulated as a linear combination of columns of hermitians of the channel matrices. In addition, coefficients of the hermitians in the linear combination are determined to compute the beamformer matrix such that a lowest reception rate among reception rates of each of the receivers is maximized. Data signals are transmitted to the receivers by applying the computed beamformer matrix to data symbols to maximize the lowest reception rate. | 02-02-2012 |
Karthikeyan Sundaresan, Monmouth Junction, NJ US
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20080219145 | Method for Scheduling Heterogeneous Traffic in B3G/4G Cellular Networks with Multiple Channels - A method includes tracking average user throughput, packet delay and jitter for every user that is serviced in an OFDM cellular system; using feedback to determine a potential schedule set responsive to user requirements for data and voice traffic responsive to minimum rate guarantee for data flows, and maximum tolerable delay and jitter guarantees for voice flows; with multiple flows for each user, first determining contending flow for each user responsive to aggregate rate feedback; obtaining search space for the user requirements of rate, delay and jitter responsive to corresponding optimizing strategies; determining individual rate, delay and jitter related schedules providing maximum incremental or marginal utility; and calculating final schedule of users on channels providing maximum incremental or marginal utility among parameter specific schedules form the determining step. | 09-11-2008 |
20090135777 | HIGH PERFORMANCE SCHEDULING METHODS AND APPARATUS FOR LEVERAGING DIVERSITY IN RELAY-ENABLED WIRELESS NETWORKS - Apparatus and methods are described for scheduling transmission resources in a relay-enabled orthogonal frequency-division multiple access (OFDMA) wireless communications system. Schedulers are described which address the problem of determining the optimal transmission schedule across two hops in the presence of finite user buffers with methods that provide approximate solutions with worst-case performance guarantees and average-case performance that is close to the optimal. The solutions formulate the diversity scheduling problem as an integer program. The weights used in the formulation incorporate the various diversity gains. The integer program is relaxed to a linear program and solved. The resulting fractional solutions are then rounded to integral values. In the process, if buffer or channel feasibility is violated, such violations are addressed through appropriate mechanisms that provide performance guarantees. The relay hop fractional variables are rounded to integral values first. Then the access hop flow is updated based on the rounded relay hop flow. Finally, the access hop variables are rounded to integral values to provide the resulting flow schedule. | 05-28-2009 |
Karthikeyan Sundaresan, Princeton, NJ US
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20090003259 | SYSTEM AND METHOD FOR SCHEDULING IN RELAY-ASSISTED WIRELESS NETWORKS - A scheduling system and method for use with relay-assisted wireless networks includes accessing feedback from mobile stations in a network and arranging users associated with a relay station in a list in accordance with marginal utilities. A determination of whether the users in the list can be eliminated from feedback overhead by testing conditions for feedback reduction is made. A diversity schedule is generated by employing a weighted bipartite graph with relay channels and access channels and performing a matching method. A transmission schedule is generated for channel usage in accordance with multi-user and channel diversity for mobile users and spatial reuse of channels across relay and access hops by incorporating rate feedback and interference for the mobile stations and the relay stations based upon the matching method applied to a new weighted graph which accounts for traffic loads and fairness as well. | 01-01-2009 |
20140031049 | Cloud-based Radio Access Network for Small Cells - A wireless communications system is disclosed. The system comprises a baseband processing unit (BBU) pool including one or more baseband processing units (BBUs), and a plurality of remote radio heads (RRHs) connected to the BBU pool through a front-haul network, wherein the wireless communications system has a plurality of sectors, each of which includes one or more small cells, each of which is deployed by one of the plurality of RRHs, wherein a BBUs is mapped to two or more RRHs in a sector in a one-to-many configuration, and a BBU is mapped to a single RRH in a sector in a one-to-one configuration, and wherein a combination of the one-to-one configuration and the one-to-many configuration is applied to each sector. Other systems, apparatuses, and methods also are disclosed. | 01-30-2014 |
20140161058 | Carrier Aggregation - A method implemented in a mobile communications system is disclosed. The method includes selecting primary component carrier c | 06-12-2014 |
Krishnakumar Sundaresan, Clifton Park, NY US
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20120218135 | TRANSMISSION CIRCUIT, ULTRASONIC PROBE AND ULTRASONIC IMAGE DISPLAY APPARATUS - A transmission circuit for use with an ultrasonic probe including an ultrasonic transducer is provided. The transmission circuit includes a high voltage current DAC configured to output a drive current of an ultrasonic transducer to transmit and receive ultrasound, and a waveform generator configured to output a control signal from the high voltage current DAC to the high voltage current DAC with a predetermined timing. The control signal configured to output the drive current with a desired magnitude. | 08-30-2012 |
20120242350 | SYSTEM AND METHOD FOR SOFT-FIELD TOMOGRAPHY DATA ACQUISITION - A system and method for soft-field tomography data acquisition are provided. One system includes a plurality of transducers that correspond to a plurality of channels, and an excitation driver coupled to generate excitation signals for the plurality of transducers. The system also includes a single reference excitation source from which excitations are generated and one or more derived excitation sources. The one or more derived excitation sources derive excitations from the single reference excitation source that are applied to each of the plurality of channels. The system further includes a response detector and a reduced bit digitizer in each of the plurality of channels configured to digitize a measured response difference between the measured response at one or more of the transducers and at least one of an excitation of the single reference excitation source or an excitation derived from the single reference excitation source or a separate reference. | 09-27-2012 |
20130099950 | TRANSMISSION CIRCUIT, ULTRASONIC PROBE AND ULTRASONIC IMAGE DISPLAY APPARATUS - A transmission circuit for use with an ultrasonic probe including an ultrasonic transducer is provided. The transmission circuit includes a high voltage current DAC configured to output a drive current of an ultrasonic transducer to transmit and receive ultrasound, and a waveform generator configured to output a control signal from the high voltage current DAC to the high voltage current DAC with a predetermined timing. The control signal configured to output the drive current with a desired magnitude. | 04-25-2013 |
20130104658 | ULTRASONIC TRANSDUCER DRIVING CIRUIT AND ULTRASONIC IMAGE DISPLAY APPARATUS | 05-02-2013 |
20140005546 | ULTRASOUND IMAGING SYSTEM AND METHOD FOR TEMPERATURE MANAGEMENT | 01-02-2014 |
20140091811 | SYSTEMS AND METHODS FOR MONITORING SENSORS - A method for multivariable measurements using a single-chip impedance analyzer includes providing a sensor, exposing the sensor to an environmental parameter, determining a complex impedance of the sensor over a measured spectral frequency range of the sensor, and monitoring at least three spectral parameters of the sensor. | 04-03-2014 |
20140095102 | SYSTEMS AND METHODS FOR MONITORING SENSORS - An impedance analyzer is provided. The analyzer includes a signal excitation generator comprising a digital to analog converter, where a transfer function of the digital to analog converter from digital to analog is programmable. The impedance analyzer further includes a receiver comprising a low noise amplifier (LNA) and an analog to digital converter (ADC), where the LNA is a current to voltage converter; where the programmable digital to analog transfer function is implemented by a direct digital synthesizer (DDS) and a voltage mode digital to analog converter, or a digital phase locked loop (PLL), or both. Further, a multivariable sensor node having an impedance analyzer is provided. Furthermore, a multivariable sensor network having a plurality of multivariable sensor nodes is provided. | 04-03-2014 |
20150053010 | ULTRASONIC TRANSDUCER DRIVING CIRCUIT AND ULTRASONIC IMAGE DISPLAY APPARATUS - An ultrasonic transducer driving circuit configured to supply an output current and/or an output voltage to an output line for driving an ultrasonic transducer is provided. The ultrasonic transducer driving circuit includes a first current discharge circuit configured to allow a current arising from electric charges accumulated in the ultrasonic transducer to flow from the output line to ground when the output line is at a positive voltage, and a second current discharge circuit configured to allow the current arising from the electric charges accumulated in the ultrasonic transducer to flow from ground to the output line when the output line is at a negative voltage. The first current discharge circuit and the second current discharge circuit are controlled based on the output current and/or the output voltage. | 02-26-2015 |
20150053011 | ULTRASONIC TRANSDUCER DRIVING CIRCUIT AND ULTRASONIC IMAGE DISPLAY APPARATUS - An ultrasonic transducer driving circuit configured to supply an output current and/or an output voltage to an output line for driving an ultrasonic transducer is provided. The ultrasonic transducer driving circuit includes a first current discharge circuit configured to allow a current arising from electric charges accumulated in the ultrasonic transducer to flow from the output line to ground when the output line is at a positive voltage, and a second current discharge circuit configured to allow the current arising from the electric charges accumulated in the ultrasonic transducer to flow from ground to the output line when the output line is at a negative voltage. The first current discharge circuit and the second current discharge circuit are controlled based on the output current and/or the output voltage. | 02-26-2015 |
Krishnakumar Sundaresan, Albany, NY US
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20110148682 | PREDICTIVE ANALOG-TO-DIGITAL CONVERTER AND METHODS THEREOF - Predictive Analog-to-Digital Converter system in one embodiment includes a sampling section producing a sampled analog input signal with a first summer section combining the sampled analog input signal and an analog prediction signal to produce an analog prediction error signal. There is at least one error analog-to-digital convertor digitizing the analog prediction error signal, wherein a digital error signal output from the error analog-to-digital convertor is one of a full bitwidth error signal during an over-range condition else a lower bitwidth error signal. A second summer is coupled to the digital error signal output and a digital prediction signal, and generates a full bitwidth digital output signal. A feedback section is coupled to the digital output signal and providing the digital prediction signal and the analog prediction signal. | 06-23-2011 |
Mannur J. Sundaresan, Greensboro, NC US
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20090326834 | Systems, methods and computer program products for characterizing structural events - Sensor assemblies for non-destructively monitoring a structure to detect a structural event include a plurality of sensor nodes configured to provide at least one sensor signal responsive to a structural event. A signal analyzer is configured to compare the sensor signal to a reference database of signal characteristics corresponding to respective structural events. | 12-31-2009 |
Muthu Sundaresan, Austin, TX US
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20140114803 | Returns Frequency Index - A system and method of determining whether to make an item listing visible to a user are disclosed. A user is enabled to navigate an e-commerce site. A returns frequency index is calculated for the user based on the user's transaction history. The user's transaction history includes the user's history of item returns. It is determined whether or not to make an item listing visible to the user on the e-commerce site based on the returns frequency index for the user. In some embodiments, the returns frequency index is calculated using the mathematical expression (V | 04-24-2014 |
Nagaraj Sundaresan, Marlboro, NJ US
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20090254914 | OPTIMIZED USAGE OF COLLECTOR RESOURCES FOR PERFORMANCE DATA COLLECTION THROUGH EVEN TASK ASSIGNMENT - A method of balancing computer resources on a network of computers is provided employing a two-tier network architecture of at least one High Level Collector as a scheduler/load balancing server, and a plurality Low level Collectors which gather task data and execute instructions. Tasks are assigned priority and weight scores and sorted prior to assignment to Low Level Collectors. Also provided is a computer readable medium including instructions, wherein execution of the instructions by at least one computing device balances computer resources on a network of computers. | 10-08-2009 |
Radhakrishnan Sundaresan, Redmond, WA US
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20130124562 | EXPORT OF CONTENT ITEMS FROM MULTIPLE, DISPARATE CONTENT SOURCES - Technologies are described herein for exporting content items from multiple disparate content sources to a single repository. Query parameters are received for locating content items hosted by one or more content servers of different types for export. Native search queries are generated for each content server from the query parameters and are executed on each content server. An export manifest listing the content items for export is built from query results received from the content servers. Each content item listed in the export manifest is then retrieved from the corresponding content server and stored in a single export repository. | 05-16-2013 |
Rajagopalan Sundaresan, Tucson, AZ US
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20120008844 | SYSTEM AND METHOD FOR MOTION-COMPENSATED COMPRESSED SENSING FOR DYNAMIC IMAGING - A method for reconstructing a digital image from a set of measurements includes providing a previous image frame in a time series of measurements of an image signal and a current image frame in the time series, calculating an estimated motion vector for a spatial point and current time point between the previous and current image frames, calculating a motion compensated current image frame from the previous image frame, estimating a known support set of a sparse signal estimate of the motion compensated current image frame where the support set comprises indices of non-zero elements of the sparse signal estimate, calculating a sparse signal corresponding to the current image frame whose support contains a smallest number of new additions to the known support set while satisfying a data consistency constraint, and correcting the motion compensated current image frame image frame from the sparse signal. | 01-12-2012 |
20130156340 | Image Filtering by Sparse Reconstruction on Affinity Net - A method reduces multiplicative and additive noise in image pixels by clustering similar patches of the pixels into clusters. The clusters form nodes in an affinity net of nodes and vertices. From each cluster, a dictionary is learned by a sparse combination of corresponding atoms in the dictionaries. The patches are aggregated collaboratively using the dictionaries to construct a denoised image. | 06-20-2013 |
Rameshwar Sundaresan, Shrewsbury, MA US
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20150098576 | Audio Distribution - A method and device for distributing audio data to a number of audio playback devices that are connected to a network. One or more network-related performance criteria of a plurality of the audio playback devices are compared. Based on the comparison, at least one of the audio playback devices is designated as a master device and at least one other of the audio playback devices is designated as a slave device. The master device then controls the distribution of audio data to one or more of the slave devices. | 04-09-2015 |
20150100623 | User Interface Control in a Networked Audio System - A method for implementing a user interface (UI) control in a networked audio system that includes a plurality of audio playback devices that are adapted to play audio and that are operatively connected to a network over which audio data is delivered from a digital audio source to the audio playback devices, where the networked audio system further includes a control device that is operatively connected to the network and that has a display that is adapted to display a representation of a UI, and where the control device comprises an operating system (OS) and a native application program written for the control device OS, and memory. There is a local UI program that is stored in the control device memory. The local UI program is loaded in the control device when the native application is opened. The loaded UI is then displayed on the control device display. | 04-09-2015 |
Siddarth G. Sundaresan, Vienna, VA US
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20100068871 | Microwave Heating for Semiconductor Nanostructure Fabrication - The present invention grows nanostructures using a microwave heating-based sublimation-sandwich SiC polytype growth method comprising: creating a sandwich cell by placing a source wafer parallel to a substrate wafer, leaving a small gap between the source wafer and the substrate wafer; placing a microwave heating head around the sandwich cell to selectively heat the source wafer to a source wafer temperature and the substrate wafer to a substrate wafer temperature; creating a temperature gradient between the source wafer temperature and the substrate wafer temperature; sublimating Si- and C-containing species from the source wafer, producing Si- and C-containing vapor species; converting the Si- and C-containing vapor species into liquid metallic alloy nanodroplets by allowing the metalized substrate wafer to absorb the Si- and C-containing vapor species; and growing nanostructures on the substrate wafer once the alloy droplets reach a saturation point for SiC. The substrate wafer may be coated with a thin metallic film, metal nanoparticles, and/or a catalyst. | 03-18-2010 |
20100147835 | Doped Gallium Nitride Annealing - The present invention involves annealing methods for doped gallium nitride (GaN). In one embodiment, one method includes placing, within a heating unit, a silicon carbide (SiC) wafer as a susceptor in close proximity with a doped GaN epilayer, wherein the doped GaN epilayer is either a GaN layer grown on a substrate or a GaN layer that is free standing; and heating, at a heating rate of at least about 100° C./s, the wafer and the doped GaN epilayer to at least about 1200° C. In another embodiment, another method includes placing, within a heating unit, a doped GaN epilayer, wherein the doped GaN epilayer is either a GaN layer grown on a conducting substrate or a GaN layer that is free standing; and heating, at a heating rate of at least about 100° C./s, the doped GaN epilayer to at least about 1200° C. | 06-17-2010 |
Srini Sundaresan, Troy, MI US
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20140171264 | VACUUM PUMP FOR A BRAKE SYSTEM WITH CLUTCH ATTACHMENT TO AN ENGINE - A brake system for a vehicle comprises a vacuum pump mounted to an engine, wherein the vacuum pump is selectively connected to be driven by the engine. A clutch is mounted within a housing for the vacuum pump. The clutch can be selectively engaged to drive the vacuum pump with the engine. A sensor is connected to the clutch such that the clutch is actuated to engage when the sensor determines that one of a vacuum within the pump is below a predetermined vacuum threshold and when the engine speed is below a predetermined speed threshold. | 06-19-2014 |
Subramanian Sundaresan, Seattle, WA US
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20130218799 | Container Selection in a Materials Handling Facility - Described herein are systems and techniques for recommending custom containers in a materials handling facility dependent on physical characteristics of an item or group of items to be shipped and/or dependent upon estimated shipping costs. For example, the systems described herein may determine dimensions for forming a custom container within the materials handling facility that is capable of containing an item or group of items for shipment. The total cost to ship the item or group of items in the custom container or a standard container can also be determined and the container with the lowest total cost may be recommended for use in packaging the item or group of items for shipment. | 08-22-2013 |
Sudharsan Sundaresan, Jacksonville, FL US
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20140244343 | METRIC MANAGEMENT TOOL FOR DETERMINING ORGANIZATIONAL HEALTH - A metrics management module may be employed to determine organizational health based on data collected for control metrics of an organization. The metrics management module may determine a set of metric health ratings based on the control metric data collected and selects a subset of metric health ratings from the set of metric health ratings. The metrics management module may determine one or more aggregate health ratings based, at least in part, on the subset of selected metric health ratings. The aggregate health ratings may indicate the organizational health of at least a portion of the organization. | 08-28-2014 |
Vidyasankar Sundaresan, Lansdale, PA US
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20110003391 | SENSOR FILMS, METHODS FOR MAKING AND METHODS FOR MONITORING WATER-SOLUBLE POLYMER CONCENTRATIONS - A multiple-component sensor film includes a carrier polymer matrix and film reactants dispersed within the carrier polymer matrix. The carrier polymer matrix includes a carrier polymer, which includes hydroxypropyl cellulose polymer and the film reactants include an indicator and a reactant from the group of a buffer, a stabilizer, a masking agent, a solubilizer and an internal reference dye. Methods for making the multiple-component sensor film and methods for monitoring the concentration of water soluble polymers in aqueous media are also provided. | 01-06-2011 |
20120164739 | DUAL HEAT STABILIZED POLYMER SENSOR FILMS - Methods are provided for improving the stability and shelf life of film sensors. The film sensors include a combination of polymeric matrix film material, analyte indicator, and solvent which has been heated in a first heat treatment application to volatilize most of the solvent and to solidify the analyte indicator to form the film sensor. The improvement comprises subjecting the film sensor to a second heat treatment to set the film and improve stability and shelf life. | 06-28-2012 |
Vidyasankar Sundaresan, Landsdale, PA US
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20090004747 | FILM SENSORS FOR DETECTING FREE CHLORINE - The present invention discloses a thin reagent containing film sensor for detecting and measuring free chlorine in water, where components of the film sensor are a polymeric substrate that contains reactive material, an organic polyhydroxy compound, a reagent that creates an associated polymeric matrix, and an indicator; and a method for making the same. The film sensor can be formed to fit a specific dimension or shape. The film sensor swells or dissolves when exposed to aqueous solutions so that said reagent is released so that it can react with free chlorine, or the film sensor swells when exposed to aqueous solutions so that the aqueous solution diffuses into the film sensor and reacts with said reagent contained within the swollen film sensor. | 01-01-2009 |
Vidyasankar Sundaresan, Trevose, PA US
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20150233917 | SENSITIVE AND RAPID METHOD FOR DETECTION OF LOW LEVELS OF LAL-REACTIVE SUBSTANCES - Methods and systems for measuring the concentration of LAL-reactive substances in fluid samples is provided. They include contacting an aqueous sample with a detection reagent to form a prepared sample. A physical property of the prepared sample may be measured to obtain at least one sample measurement characteristic of the prepared sample. Curve fitting may then be used to forecast a concentration of the LAL-reactive substance the aqueous sample will have at a specified time in the future based on the sample measurement and a correlation developed between at least one standard measurement of a physical quality of a solution with a known concentration of a LAL-reactive substance therein. The quality of the sample measurement may be validated using historical data and/or the standard measurement. | 08-20-2015 |
Vijay V. Sundaresan, Austin, TX US
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20120198454 | ADAPTIVE SPINNING OF COMPUTER PROGRAM THREADS ACQUIRING LOCKS ON RESOURCE OBJECTS BY SELECTIVE SAMPLING OF THE LOCKS - In the dynamic sampling or collection of data relative to locks for which threads attempting to acquire the lock may be spinning so as to adaptively adjust the spinning of threads for a lock, an implementation for monitoring a set of parameters relative to the sampling of data of particular locks and selectively terminating the sampling when certain parameter values or conditions are met. | 08-02-2012 |
Vishnu-Baba Sundaresan, Richmond, VA US
Patent application number | Description | Published |
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20110077663 | Magnetoelectric Surgical Tools for Minimally Invasive Surgery - A magnetoelectric element of a surgical tool positioned in the body of a subject is controllably bent or elongated under the influence of an applied magnetic field. A piezoelectric layer in the magnetoelectric element provides output that can be used to determine the actual amount of bending or elongation of the magnetoelectric element, and this actual amount is compared to a theoretical amount of bending or elongation which would result from the applied magnetic field. Any differences between the actual and theoretical amounts provide feedback to the surgeon for performing the surgical procedure. Preferably, tactile feedback is provided to the surgeon. | 03-31-2011 |