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Das, TX
Abhijit Kumar Das, Dallas, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20110210793 | VARIABLE GAIN AMPLIFIER HAVING AUTOMATIC POWER CONSUMPTION OPTIMIZATION - A variable gain amplifier may include a master amplifier that may be configured to generate a first current and a diode coupled with the master amplifier so that the first current passes through the diode which, when the first current is passing through the diode, generates a diode voltage signal. According to embodiments, an error amplifier may include a first input configured to receive a gain control voltage signal and a second input configured to receive the diode voltage signal. The output of the error amplifier may provide a feedback signal. The amplifier may include a circuit configured to generate at least one voltage control signal based on the feedback signal and a slave amplifier configured to adjust a gain amount based on the at least one voltage control signal. | 09-01-2011 |
| 20120092200 | SIGMA-DELTA MODULATOR - A Sigma-Delta Modulator (SDM) has a summing junction that receives an input signal and a feedback signal, a multi-level analog-to-digital converter (ADC) that receives the SDM input signal and generates an ADC output, a first analog switch that receives the ADC output and generates a plurality of reference voltages, a second analog switch generating the feedback signal, where the feedback signal is selected from one of the reference voltages. | 04-19-2012 |
Aditya N. Das, Arlington, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20100145511 | Microcrawler and conveyor robots, controllers, systems, and methods - Robots, controllers, systems, and methods for microcrawler robots (e.g., with stick-slip gaited locomotion and/or with power multiplexing between actuators). | 06-10-2010 |
Baishakhi Das, San Antonio, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20100273759 | PROGESTERONE ANTAGONISTS - Described herein are compounds which exhibit progesterone antagonistic effects and methods of treating cancer using such compounds. | 10-28-2010 |
Gautam Das, Irving, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20090248619 | SUPPORTING UNIFIED QUERYING OVER AUTONOMOUS UNSTRUCTURED AND STRUCTURED DATABASES - Methods, systems and computer products perform cost estimate to determine an efficient approach to answer a query according to one of several unified query plans. One unified query plan involves querying an unstructured database, referencing a unified index, and probing a structured database based on matches discovered in the unified index. The results of the unstructured database query are used to lookup entries in a unified index associated with the structured database. Then the structured database is probed by querying only the subset of the structured database gleaned from the unstructured database query. | 10-01-2009 |
Kamal K. Das, Arlington, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20090018651 | OFF-AXIS ANTI-REFLECTIVE INTRAOCULAR LENSES - Exemplary embodiments provide a coated intraocular lens that has a lens body with a first refractive index and an anti-reflective coating. The coating covers at least a portion of the lens body and has a second index of refraction that is less than the first index of refraction of the lens body. The anti-reflective coating reduces the intensity of reflections produced from off axis light incident on the lens body by at least a factor of 2.5 times and enhancing light transmission. | 01-15-2009 |
| 20090160075 | METHODS FOR FABRICATING CUSTOMIZED INTRAOCULAR LENSES - In one aspect, the present invention provides methods for custom fabrication of IOLs. In some embodiments, such methods call for measuring one or more aberrations of a patient's eye, and determining the profile of at least one surface of an IOL that would ameliorate, and control those aberrations. The surface profile can then be imparted to a surface of a starting lens (or a lens blank) via ablation, e.g., by utilizing an excimer laser beam. In some other embodiments, the measured aberrations can be utilized to determine the profile of at least one surface of a wafer mold. A wafer mold having that surface profile can then be fabricated, e.g., by ablating a slab or an existing wafer of appropriate material, and the mold can be used to fabricate an IOL suitable for implantation in the patient's eye. | 06-25-2009 |
| 20090237615 | Correction of Surgically-Induced Astigmatism During Intraocular Lens Implants - In one aspect, the present invention provides a method of designing an ocular implant (e.g., an IOL), which comprises establishing corneal topography of a patient's eye, e.g., by performing one or more wavefront aberration measurements of the eye, prior to an ocular surgery. The method further includes ascertaining an astigmatic aberration of the cornea that is expected to be induced by the surgery and determining a toricity of a surface of an ocular implant, which is intended for implantation in the patient's eye, so as to enable the implant to compensate for the surgically-induced aberration. | 09-24-2009 |
Kamel K. Das, Arlington, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20080269883 | OCULAR IMPLANT TO CORRECT DYSPHOTOPSIA, GLARE, HALOS AND DARK SHADOW TYPE PHENOMENA - Methods and devices for inhibiting the dark shadow effect, known as dysphotopsia, perceived by some subjects having implanted intraocular lenses (IOLs) are presented. In one aspect, an IOL can include an optic and one or more fixation members for facilitating placement of the IOL. The fixation member can be adapted to position the optic sufficiently close to the iris to inhibit dysphotopsia. As some examples, a fixation member can position an optic to within some distance of the tip of the iris, or the fixation member can be adapted to contact a portion of an eye posterior to an optic's posterior surface; or the fixation member can have an end that is posterior to a posterior surface of the optic. Various techniques for achieving these improvements among others are discussed, both in terms of the structures of improved IOLs, and methods for alleviating dysphotopsia. | 10-30-2008 |
Pralay Das, Sugar Land, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20110017473 | SLIP RING APPARATUS FOR A ROTARY STEERABLE TOOL - A downhole tool includes a slip ring assembly deployed radially between a shaft and a housing. The slip ring assembly may be configured as a stand-alone assembly and is further configured to provide a plurality of distinct electrical communication channels between the shaft and housing. These communication channels are suitable for transmitting electrical power and/or electronic data. Electrical connection is made between the housing and the slip ring assembly via a connector block that is fastened to a plurality of stator rings in the slip ring assembly. The connector block extends radially outward from the stator rings and physically engages an opening in the housing thereby rotationally coupling the stator rings to the housing. | 01-27-2011 |
| 20110168444 | Rotary Steerable Tool Employing a Timed Connection - A downhole steering tool includes distinct hydraulic and electronics modules deployed about a shaft. The hydraulics module includes a plurality of hydraulically actuated blades. The electronics module includes electronic circuitry configured to control blade actuation. The hydraulics and electronics modules are physically and electrically connected to one another via a timed connection. | 07-14-2011 |
| 20110168445 | Downhole Downlinking System Employing a Differential Pressure Transducer - A downhole tool includes a downlinking system deployed in a downhole tool body having an internal through bore. The downlinking system includes a differential pressure transducer configured to measured a pressure difference between drilling fluid in the internal through bore and drilling fluid external to the tool (in the borehole annulus). The differential transducer is electrically connected with an electronic controller (deployed substantially anywhere in the drill string) that is configured to receive and decode pressure waveforms. | 07-14-2011 |
Rajasree Sarah Das, Dallas, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20120110846 | COMPLIANT ELECTRICAL STIMULATION LEADS AND METHODS OF FABRICATION - In one embodiment, a neurostimulation lead for stimulating neural tissue of a patient, comprises: a lead body of insulative material; a plurality of electrodes; a plurality of terminals; a plurality of conductors, wherein the plurality of electrodes are electrically coupled to the plurality of terminals through the plurality of conductors; wherein the plurality of conductors are disposed in a helical manner in a repeating pattern of groups of conductors separated by gaps along a substantial length of the lead body, each gap being larger than an inter-conductor pitch within the groups of conductors; wherein the insulative material is a compliant material permitting elongation of the lead at low stretching forces and the insulative material of the lead body is fused through a substantial volume of the lead body and along a substantial length of the lead body. | 05-10-2012 |
Ranadip Das, Austin, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20080294795 | Determining Availability Of A Destination For Computer Network Communications - Determining availability of a destination for computer network communications that include providing on a caching device a destination availability cache comprising at least one cache entry representing availability of a destination and providing, from the caching device to a source, through computer network communications, information indicating the availability of the destination. In typical embodiments, the cache entry comprises a network address of a destination device and a time limitation for the cache entry. | 11-27-2008 |
Sajal Das, Denton, TX US
Sajal K. Das, Denton, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20090059827 | System, Method and Apparatus for Asynchronous Communication in Wireless Sensor Networks - The present invention provides a system, method and apparatus for asynchronous communication in wireless sensor networks. Each sensor includes a transmitter normally operating in a sleep mode, a low power receiver having a memory, a sensing module, and a processor normally operating in a sleep mode communicably coupled to the transmitter, the low power receiver and the sensing module. Data is received via the low power receiver and stored in the memory. Whenever a wakeup time occurs, the transmitter and the processor are put in an operational mode, sensory data is obtained from the sensing module, the sensory data is processed, the received data is obtained from the low power receiver memory, the processed sensory data and the received data are transmitted via the transmitter, and the transmitter and the processor are put in the sleep mode. | 03-05-2009 |
Siddhartha Das, El Paso, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20100125098 | TREATMENT OF CANCER WITH COMPLEX ORGANIC-INORGANIC PIGMENT COMPOSITIONS - The present invention includes compositions and methods for treating disorders of the skin or mucosa resulting from cancer therapies comprising: identifying a patient receiving cancer treatment; and administering to said patient an effective dose of a treated organic/inorganic complex material with an organic dye molecule or derivative thereof, in a pharmaceutically acceptable carrier. | 05-20-2010 |
Stephen D. Das, The Woodlands, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20080234639 | Valves, Valved Fluid Transfer Devices and Ambulatory Infusion Devices Including The Same - Valves, valved fluid transfer devices and ambulatory infusion devices including the same. | 09-25-2008 |
| 20090270805 | Test Method and Apparatus for Verification of Medical Device Functionality - This invention relates to methods, apparatuses and systems for testing the functionality of the pumping mechanism of a medical device, e.g., an implantable infusion pump, while the medical device is contained within a shipping package. The test apparatus enables such functional verification, without opening the shipping package, when the medical device is still contained within the package that has been appropriately sealed to maintain sterility of the medical device. | 10-29-2009 |
| 20090281494 | Heat Sterilizable Ambulatory Infusion Devices - Ambulatory infusion devices with components that may be heat sterilized. | 11-12-2009 |
Stephen D. Das, Woodlands, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20080234638 | Valves, Valved Fluid Transfer Devices and Ambulatory Infusion Devices Including The Same - Valves, valved fluid transfer devices and ambulatory infusion devices including the same. | 09-25-2008 |
Sumit Rupri Das, Richardson, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20090327527 | Method and System for Hierarchical Data Management - In one aspect, an integrated circuit device including a first-level module configurable to receive and transmit control information, said first level module including a first sub-level module, a second sub-level module operably coupleable to the first sub-level module, and a third sub-level module operably coupleable to the second module; and a second-level module operably coupleable to the first-level module is disclosed. | 12-31-2009 |
Sumit Sadhan Das, Richardson, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20080244146 | AGGREGATION OF ERROR MESSAGING IN MULTIFUNCTION PCI EXPRESS DEVICES - A method of aggregating events in a PCIe (Peripheral Component Interconnect Express) multifunction device minimizes reported error messages, where several functions share a common PCIe interface logic. A predetermined number of function entities with logical gates, connected in daisy chain configuration, process incoming information, and a decision is made whether each function entity will generate a blocking control or a pass-through control. The error messages are aggregated across the function entities in a single clock cycle with the help of an error controller. The functions can be from IEEE 1394 interface, graphics display controller, sound card, PCIe switch, or PCIe to PCI bridge connection. Each function preferably has a different configuration and security level setting for error reporting and messaging. There may be a plurality of parallel daisy chains, and the PCIe device may include three layers namely, a physical layer, data link layer and transaction protocol layer (for error logging, reporting). | 10-02-2008 |
| 20100017547 | PCI Bus Burst Transfer Sizing - Various apparatuses, methods and systems for specifying memory transaction sizes on a PCI bus are disclosed herein. For example, some embodiments of the present invention provide apparatuses for transferring data including a PCI bus, a memory map for memory transactions performed on the PCI bus, and at least one set of control registers adapted to establish at least one window within the memory map. The set of control registers contains an address range for the at least one window within the memory map and a burst transfer size for memory transactions taking place on the PCI bus that are addressed within the address range. | 01-21-2010 |
Tony Das, Dallas, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20100286726 | Hemostasis Device and Method for Using the Same - A hemostasis device is disclosed. The hemostasis device includes a stem portion including a top end and a bottom end, a handle portion connected to the top end of the stem portion, and a base portion connected to the bottom end of the stem portion. A method for utilizing the hemostasis device is also disclosed. | 11-11-2010 |
| 20110034937 | Revascularization Device for Treating an Occluded Arterial Vessel - Medical devices for revascularization and methods of their use are disclosed. The medical device includes an actuator portion, an inner tubular body connected to the actuator portion and an outer tubular body connected to the actuator portion. The inner tubular body is disposed within a bore of the outer tubular body. The medical device also includes a guide wire extending through one or more of the actuator portion, inner tubular body and outer tubular body. | 02-10-2011 |
Vallabh Easwara Das, Sugar Land, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20100198104 | SYSTEM FOR DIAGNOSIS AND THERAPY OF GAZE STABILITY - A system to measure a subject's gaze stability, comprising: a display device; a data processor in communication with the display device; a data input device in communication with the data processor; and a motion detector in communication with the data processor, the motion detector being adapted to be worn by the subject under observation, wherein the data processor is configured to cause the display device to display a predetermined visual target based on a motion signal detected by the motion detector, the data processor is adapted to receive information from the data input device concerning a response of the subject in identifying the predetermined visual target, and the data processor is further adapted to generate an output characterizing the subject's gaze stability based on the received information. | 08-05-2010 |