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Ajay Kumar

Ajay Kumar, Dallas, TX US

Patent application numberDescriptionPublished
20110050471Use of Three Phase Clock in Sigma Delta Modulator to Mitigate the Quantization Noise Folding - A differential sigma delta modulator operates by modulating an input signal by intermittently coupling a reference signal to the input signal using one or more switches controlled by one or more feedback signals and a respective one or more non-overlapping clock signals. The modulated input signal is integrated using an integration capacitor to form an integrated value and the integrated value is compared to a threshold to form the one or more feedback signals. Parasitic capacitance of the one or more switches is initialized to an initial value prior to each intermittent coupling of the reference signal to the input signal using another non-overlapping clock signal.03-03-2011
20110199137LOOP FILTER AND VOLTAGE CONTROLLED OSCILLATOR FOR A PHASE-LOCKED LOOP - A phase-locked loop includes a loop filter and a voltage controlled oscillator (VCO). The VCO includes multiple transistors, each transistor having a smaller transconductance (g08-18-2011
20110267133CURRENT GENERATING CIRCUIT - A current generating circuit including a current mirror, an impedance device, a first voltage generating portion and a second voltage generating portion. The current mirror has a current output leg and a current generating leg. The impedance device is connected to the current generating leg. The first voltage generating portion can generate a first voltage that is complementary to absolute temperature. The second voltage generating portion can generate a second voltage that is proportional to absolute temperature. The first voltage generating portion and the second voltage generating portion are arranged to generate an impedance current across the impedance device. The current output leg is operable to output an output current based on the impedance current. The impedance device has an impedance value, a first terminal and a second terminal. An impedance voltage drop across the first terminal and the second terminal is equal to a product of the impedance value and the impedance current. The first voltage is based on an attenuation of the impedance voltage drop.11-03-2011
20120086510COMMON-MODE FEEDBACK AMPLIFIER - A circuit is provided for use with a reference voltage. The circuit includes a voltage source, a common-mode feedback amplifier and a feedback impedance portion. The common-mode feedback amplifier may be connected to the voltage source and may be arranged to receive the reference voltage. The common-mode feedback amplifier may include an input stage, an output stage, a positive input, a negative input and an output. The output may be connected to the feedback impedance portion. The feedback impedance portion may additionally be connected to one of the positive input and the negative input. A feedback factor, based on the feedback impedance portion, is less than one.04-12-2012

Ajay Kumar, North Andover, MA US

Patent application numberDescriptionPublished
20110033464IMMUNOGLOBULIN FUSION PROTEIN FORMULATIONS - The present invention provides compositions of Ig fusion proteins, especially compositions including an Ig fusion protein, a bulking agent, a disaccharide, a surfactant, and a buffer. In one aspect, these compositions are stable under long-term storage or at least one freeze/thaw cycle. The invention also provides methods of preparation of the Ig fusion protein compositions. In one aspect, compositions of the invention are lyophilized. In a further aspect, the compositions are lyophilized by a process that includes an annealing step.02-10-2011

Ajay Kumar, Palmdale, CA US

Patent application numberDescriptionPublished
20100057005INJECTION SYSTEMS - An intraosseous injection device includes a tool having a distal portion, a proximal portion, and a solution dispensing opening. The distal portion has one or more cutting surfaces. The tool can be coupled with a protective carrier. The tool can be rotatably coupled to a tool actuation mechanism. A housing has a distal end and a proximal end. The housing releasably receives a solution cartridge containing a solution. A solution dispensing mechanism dispenses solution from the solution cartridge. A gripping member grips a proximal portion of the tool. A rotation device rotates the gripping member and thereby rotates the tool about an axis. The proximal portion of the tool connects directly to the solution cartridge such that solution from the cartridge can be delivered through the solution dispensing opening. The tool is configured to rotate relative to the solution cartridge.03-04-2010
20100102517SEALING SYSTEM FOR MEDICAL/DENTAL HANDPIECES - A system for enhanced sealing against intrusion of moisture and other contaminants for medical/dental handpieces having rotating or other moving elements driven by a motor within the handpiece. The enhanced sealing includes tandem seals on stepped diameters to provide additional flow pathway impediments. The tandem seals preferably include spring seals that are positioned in opposite directions to provide enhanced sealing against pressures in two different directions that occur during the pressurization and vacuum cycles of an autoclaving process. Additional enhancements include the use of annular sealing rings with x-shaped cross sections.04-29-2010

Patent applications by Ajay Kumar, Palmdale, CA US

Ajay Kumar, Himachal Pradesh IN

Patent application numberDescriptionPublished
20100016588CAFFEINE FRACTION OBTAINED FROM TEA LEAVES AND A METHOD FOR INDUCING AGROBACTERIUM TUMEFACIENS-MEDIATED GENETIC TRANSFORMATION IN PLANTS USING SAID CAFFEINE FRACTION - The present invention relates to a thermolabile caffeine fraction useful for an efficient 01-21-2010
20100077511CAFFEINE FRACTION OBTAINED FROM TEA LEAVES AND A METHOD FOR INDUCING AGROBACTERIUM TUMEFACIENS-MEDIATED GENETIC TRANSFORMATION IN PLANTS USING SAID CAFFEINE FRACTION - The present invention relates to a thermolabile caffeine fraction useful for an efficient 03-25-2010

Ajay Kumar, Banjara Hills IN

Patent application numberDescriptionPublished
20100066918MOBILE TELEVISION CONTROL LOGIC AND METHOD FOR IMPROVED CHANNEL SWITCHING TIME - A method, control logic, and executable instructions stored in memory enable faster switching between mobile television channels displayed on handheld devices. In one example, a tuner is controlled to receive a first wireless digital burst, such as a wireless digital burst of a digital video broadcasting-handheld (“DVB-H”) signal, including first channel information. The first channel information corresponds to a first mobile television channel to be displayed, and video based on the first channel information is provided. If desired, battery power consumption by the handheld device is then reduced by turning off the tuner. The tuner is then turned on to receive a second wireless digital burst including second channel information. The second channel information corresponds to the second mobile television channel to be displayed. The second channel information is buffered in a buffer while the video based on the first channel information is provided. If desired, battery power consumption is then reduced by again turning off the tuner. The tuner is again turned on to receive another burst.03-18-2010

Ajay Kumar, Jammu Tawi IN

Patent application numberDescriptionPublished
20090298938USE OF SEMI SYNTHETIC ANALOGUES OF BOSWELLIC ACIDS FOR ANTICANCER ACTIVITY - The present invention relates to use of compounds of general formula 1 for anticancerous activity, wherein the said compound being derived semi-synthetically from natural triterpenoic acids known as boswellic acids by the induction of apoptosis thereof cytotoxicity and anti-cancer activity displayed by semi-synthetic analogues of natural triterpenes, known as Boswellic acids. These compounds may be used for the treatment of cancer, alone or in combination with pharmaceutically acceptable or other carriers, displaying cytotoxicity and anti-cancer activity for colon, prostrate, liver, breast, central nervous system (CNS), leukemia and malignancy of other tissues, including ascites and solid tumors. The cancer cell death is mediated by induction of apoptosis and inhibition of cell proliferation at specific doses.12-03-2009

Ajay Kumar, Kowloon HK

Patent application numberDescriptionPublished
20080240514Method of personal recognition using hand-shape and texture - The present invention relates to a method and system for a multimodal biometric system utilizing a single image to generate hand shape and palmprint features. The invention utilizes a digital camera, and incorporates feature subset selection algorithms to eliminate redundant data. The inventions, through the use of feature algorithm, successfully fuses the hand shape features and palmprint features at the features level.10-02-2008
20110304720METHOD AND APPARATUS FOR PERSONAL IDENTIFICATION USING FINGER IMAGING - A system for extracting finger vein and finger texture images from a finger of a person at the same time, the device including an image capture device configured to capture at least one image of at least one finger in a contactless manner, a feature extraction module configured to extract unique finger vein features and finger texture features from the at least one captured image, and a processing module configured to normalize the at least one captured image and integrate the extracted finger vein features and finger texture features.12-15-2011

Ajay Kumar, Maharashtra IN

Patent application numberDescriptionPublished
20120042125Systems and Methods for Efficient Sequential Logging on Caching-Enabled Storage Devices - A computer-implemented method for efficient sequential logging on caching-enabled storage devices may include 1) identifying a storage device with a cache, 2) allocating space on the storage device for a sequential log, 3) calculating a target size for the sequential log based at least in part on an input/output load directed to the sequential log, and then 4) restricting the sequential log to a portion of the allocated space corresponding to the target size. Various other methods, systems, and computer-readable media are also disclosed.02-16-2012

Ajay Kumar, Darapur Tanda Urmar IN

Patent application numberDescriptionPublished
20120089857METHOD FOR COMPENSATING FOR VARIATIONS IN DATA TIMING - A method for compensating for variations in timing of data sent to a processor on data bit lines relative to a strobe clock sent to the processor on a strobe clock line that can be used in a dual data rate (DDR) memory identifies discrete minimum and maximum time offset values for test data in selected data bit patterns for the data bit lines. The discrete minimum time offset value is the minimum timing adjustment required to allow the processor to receive the data in a steady-state condition during a data valid window of the strobe clock and the discrete maximum time offset value is a maximum timing adjustment required to allow the processor to receive the data in a steady-state condition during a data valid window of the strobe clock. The discrete minimum and maximum time offset values identify a valid range when the data bit lines supply data in a steady-state condition for latching into the processor by the strobe clock.04-12-2012