Patents by Inventor Ajay Singh

Ajay Singh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20080233887
    Abstract: A mobile station is provided. The mobile station includes a processor programmed to promote sending a classmark change message responsive to receiving a command from a network, wherein the command requires a capability that the mobile station does not possess.
    Type: Application
    Filed: March 23, 2007
    Publication date: September 25, 2008
    Applicant: RESEARCH IN MOTION
    Inventor: Ajay SINGH
  • Publication number: 20080214565
    Abstract: The present invention relates to certain substituted phenyl oxazolidinones of formula I and H and to processes for the synthesis of the same. This invention also relates to pharmaceutical compositions containing the compounds of the present invention as antimicrobials. The compounds are useful antimicrobial agents, effective against a number of human and veterinary pathogens, including gram-positive aerobic bacteria such as multiply-resistant staphylococci, streptococci and enterococci as well as anaerobic organisms as Bacterioides spp. and Clostridia spp. species, and acid fast organisms such as Mycobacterium tuberculosis, Mycobacterium avium and Mycobacterium spp.
    Type: Application
    Filed: April 7, 2003
    Publication date: September 4, 2008
    Inventors: Anita Mehta, Sonali Rudra, Ajjarapu Venkata Subrahmanya Rajo Rao, Ajay Singh Yadav, Ashok Rattan
  • Publication number: 20080082373
    Abstract: Method of preparing an itinerary for a customer traveling to a destination. The method includes the steps of providing on the itinerary reservation information identifying the customer's schedule in relation to at least one of an accommodation, means of transport, and event and providing on the itinerary a listing of merchants local to a destination related to the customer's reservation information. The listed merchants are determined based on their relevance to at least one of the customer's past spending habits and the past spending habits of a group of other customers deemed similar to the customer.
    Type: Application
    Filed: December 27, 2006
    Publication date: April 3, 2008
    Applicant: American Express Travel Related Services Co., Inc.
    Inventors: Lisa Durocher, Marcella Shinder, Krista Stein, Jennifer Friedman, Jibreel Lockhart, Ajay Singh
  • Patent number: 7337057
    Abstract: A method for predicting lean blow-outs (LBOs) in a gas turbine engine includes extracting a plurality of tones in pressure signals representative of pressure within monitored combustor cans, tracking a frequency of a hot tone in each monitored can, and utilizing the extracted tones and the tracked frequency to determine a probability of an LBO.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: February 26, 2008
    Assignee: General Electric Company
    Inventors: Bruce Gordon Norman, Avinash Vinayak Taware, Minesh Ashok Shah, Ajai Singh, Willy Steve Ziminsky, Pingchuan Wu
  • Patent number: 7320213
    Abstract: A system for ranking combustion chambers in a gas turbine in order of chamber combustion temperature including: at least one fuel nozzle supplying fuel to the combustion chambers at a predetermined fuel rate abnormally near a lean blow out (LBO) condition of the chambers; at least one dynamic pressure sensor in each chamber sensing combustion dynamic pressures in said combustion chambers and generating dynamic pressure signals representative of the dynamic pressure in each of said combustion chambers, wherein the dynamic pressure signals provide information regarding the dynamic pressure at a plurality of frequencies; a signal band pass filter segmenting the signals into a plurality of predefined frequency bands comprising a lean blow out (LBO) precursor frequency band, a cold tone frequency band and a hot tone frequency band; a processor determining a value for each chamber representative of amplitudes of the signals in each of LBO precursor frequency band, the cold tone frequency band and the hot tone frequ
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: January 22, 2008
    Assignee: General Electric Company
    Inventors: Minesh Ashok Shah, Ajai Singh, Willy Steve Ziminsky, Derrick Simons
  • Publication number: 20080010966
    Abstract: A gas turbine system is provided. The system includes a gas turbine engine including at least one combustor can, at least one of a combustor dynamics pressure sensor and flame sensor coupled to at least one of the combustor cans, the sensor configured to monitor combustion in each respective can and transmit a signal indicative of combustion in each respective can, and at least one control system configured to receive the signal from said at least one sensor. The control system is programmed to filter the combustion signal to determine the presence of a lean blowout (LBO) precursor, determine a probability of LBO from the filtered signal, and control the gas turbine system to facilitate reducing the probability of LBO.
    Type: Application
    Filed: July 17, 2007
    Publication date: January 17, 2008
    Inventors: Avinash Taware, Minesh Shah, Ajai Singh, Willy Ziminsky, Pingchuan Wu
  • Patent number: 7278266
    Abstract: A method of monitoring and controlling the combustion dynamics of a gas turbine engine system is provided. The system includes at least one gas turbine that includes at least one combustor can. The method includes receiving a signal from a gas turbine engine sensor that is indicative of combustion dynamics in at least one of the combustor cans, processing the received signal to determine a probability of lean blowout for at least one combustor can, and controlling the gas turbine engine system to facilitate reducing a probability of a lean blowout (LBO) event using the determined probability of lean blowout.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: October 9, 2007
    Assignee: General Electric Company
    Inventors: Avinash Vinayak Taware, Minesh Ashok Shah, Ajai Singh, Willy Steve Ziminsky, Pingchuan Wu
  • Publication number: 20070199328
    Abstract: A system for ranking combustion chambers in a gas turbine in order of chamber combustion temperature including: at least one fuel nozzle supplying fuel to the combustion chambers at a predetermined fuel rate abnormally near a lean blow out (LBO) condition of the chambers; at least one dynamic pressure sensor in each chamber sensing combustion dynamic pressures in said combustion chambers and generating dynamic pressure signals representative of the dynamic pressure in each of said combustion chambers, wherein the dynamic pressure signals provide information regarding the dynamic pressure at a plurality of frequencies; a signal band pass filter segmenting the signals into a plurality of predefined frequency bands comprising a lean blow out (LBO) precursor frequency band, a cold tone frequency band and a hot tone frequency band; a processor determining a value for each chamber representative of amplitudes of the signals in each of LBO precursor frequency band, the cold tone frequency band and the hot tone frequ
    Type: Application
    Filed: April 30, 2007
    Publication date: August 30, 2007
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Minesh SHAH, Ajai SINGH, Willy ZIMINSKY, Derrick SIMONS
  • Publication number: 20070189292
    Abstract: Estimating bandwidth of a transport connection from higher layers. In an embodiment, the bandwidth is estimated as a function of the window size, the time taken to transfer a transport payload of window size from the sender system to the receiver system, and a conclusion indicating whether the window size is limited by the network or by the resources on the receiver system. All the factors used in the bandwidth computation are determined based on round-trip times of transport payloads of different sizes transferred between the sender system and the receiver system.
    Type: Application
    Filed: April 4, 2006
    Publication date: August 16, 2007
    Applicant: ORACLE INTERNATIONAL CORPORATION
    Inventors: Ajay Singh, Partha Kanuparthy
  • Patent number: 7210297
    Abstract: A method for identifying combustion characteristics of a plurality combustion chambers in a gas turbine, the method including: supplying fuel to the combustion chambers at a predetermined fuel rate; sensing combustion dynamic pressure in said plurality of combustion chambers and generating dynamic pressure signals representative of the dynamic pressure in each of said combustion chambers, wherein the dynamic pressure signals provide information regarding the dynamic pressure at a plurality of frequencies; segmenting the signals into a plurality of predefined frequency bands; determining a characteristic value for each of the segmented signals, and identifying an order of combustion chambers based on the characteristic value.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: May 1, 2007
    Assignee: General Electric Company
    Inventors: Minesh Ashok Shah, Ajai Singh, Willy Steve Ziminsky, Derrick Simons
  • Publication number: 20060288098
    Abstract: According to some embodiments, a message generated by a downstream device is received at upstream device. The message may, for example, be received via a peripheral interface and may not require a response. It may then be determined that an error is associated with the message, and an alert message may be sent from the upstream device to the downstream device via the peripheral interface.
    Type: Application
    Filed: June 20, 2005
    Publication date: December 21, 2006
    Inventors: Ajai Singh, David Puffer
  • Publication number: 20060254279
    Abstract: A method, system and software for reducing combustion chamber to chamber variation in a multiple-combustion chamber turbine system comprising sensing dynamic combustion pressure tones emitted from combustion chambers in a multiple combustion chamber turbine and determining a combustion chamber stratification index for the combustion chambers from the dynamic combustion pressure tones emitted for the combustion chambers to record and/or tune combustion chamber performance variations in the multiple-chamber combustion turbine system.
    Type: Application
    Filed: May 10, 2005
    Publication date: November 16, 2006
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Avinash Taware, Vasanth Kothnur, Ajai Singh, Bruce Norman, Jian Zhou
  • Publication number: 20060090471
    Abstract: A method for identifying combustion characteristics of a plurality combustion chambers in a gas turbine, the method including: supplying fuel to the combustion chambers at a predetermined fuel rate; sensing combustion dynamic pressure in said plurality of combustion chambers and generating dynamic pressure signals representative of the dynamic pressure in each of said combustion chambers, wherein the dynamic pressure signals provide information regarding the dynamic pressure at a plurality of frequencies; segmenting the signals into a plurality of predefined frequency bands; determining a characteristic value for each of the segmented signals, and identifying an order of combustion chambers based on the characteristic value.
    Type: Application
    Filed: November 4, 2004
    Publication date: May 4, 2006
    Applicant: General Electric Company
    Inventors: Minesh Shah, Ajai Singh, Willy Ziminsky, Derrick Simons
  • Publication number: 20060042261
    Abstract: A method of monitoring and controlling the combustion dynamics of a gas turbine engine system is provided. The system includes at least one gas turbine that includes at least one combustor can. The method includes receiving a signal from a gas turbine engine sensor that is indicative of combustion dynamics in at least one of the combustor cans, processing the received signal to determine a probability of lean blowout for at least one combustor can, and controlling the gas turbine engine system to facilitate reducing a probability of a lean blowout (LBO) event using the determined probability of lean blowout.
    Type: Application
    Filed: August 31, 2004
    Publication date: March 2, 2006
    Inventors: Avinash Taware, Minesh Shah, Ajai Singh, Willy Ziminsky, Pingchuan Wu
  • Publication number: 20050278108
    Abstract: A method for predicting lean blow-outs (LBOs) in a gas turbine engine includes extracting a plurality of tones in pressure signals representative of pressure within monitored combustor cans, tracking a frequency of a hot tone in each monitored can, and utilizing the extracted tones and the tracked frequency to determine a probability of an LBO.
    Type: Application
    Filed: May 28, 2004
    Publication date: December 15, 2005
    Inventors: Bruce Norman, Avinash Taware, Minesh Shah, Ajai Singh, Willy Ziminsky, Pingchuan Wu
  • Patent number: 6973396
    Abstract: A computer implemented process is provided for assessing and characterizing the degree of success or failure of an operational event of a machine system such as a fluid compressor machine or turbine machine or the like on a continuous numerical scale. The computer implemented process develops and tracks machine unit signatures, machine site signatures and machine fleet signatures to evaluate various operational events and provide fault detection. At least some sensor data acquired from the machine system during an operational event is transformed to correct or at least reduce variabilities in the data caused by ambient conditions and fuel quality. The transformed data is then analyzed using statistical methods to determine how closely the operational event conforms to an expected normal behavior and the information is used to develop a single comprehensive quality assessment of the event.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: December 6, 2005
    Assignee: General Electric Company
    Inventors: Minesh Shah, Kotesh K. Rao, Bruce Norman, Robert J. Iasillo, Ajai Singh
  • Publication number: 20050267702
    Abstract: A computer implemented process is provided for assessing and characterizing the degree of success or failure of an operational event of a machine system such as a fluid compressor machine or turbine machine or the like on a continuous numerical scale. The computer implemented process develops and tracks machine unit signatures, machine site signatures and machine fleet signatures to evaluate various operational events and provide fault detection. At least some sensor data acquired from the machine system during an operational event is transformed to correct or at least reduce variabilities in the data caused by ambient conditions and fuel quality. The transformed data is then analyzed using statistical methods to determine how closely the operational event conforms to an expected normal behavior and the information is used to develop a single comprehensive quality assessment of the event.
    Type: Application
    Filed: May 28, 2004
    Publication date: December 1, 2005
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Minesh Shah, Kotesh Rao, Bruce Norman, Robert Iasillo, Ajai Singh
  • Patent number: 6652752
    Abstract: A method for the biodegradation on an oil-based sludge comprising a mixture of petroleum hydrocarbons is disclosed. The method comprises forming an aqueous solution in a reactor of an oil-in-water emulsion of the oil-based sludge, bacterial culture and nutrients for the bacterial culture, the bacterial culture having the ability to grow on petroleum hydrocarbons as sole carbon source and having been isolated from a hydrocarbon contaminated soil or hydrocarbon-containing sludge or other environments rich in hydrocarbon degrading bacteria, maintainingthe aqueous solution under aerobic conditions in the reactor at a temperature of at least 10° C. for a period of time sufficient to reduce the amount of hydrocarbon by at least 25%, and discharging aqueous solution having a reduced amount of hydrocarbons from the reactor. The method may be used on sludge containing aromatics, resins and asphaltenes.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: November 25, 2003
    Inventors: Owen P. Ward, Ajay Singh
  • Publication number: 20030150801
    Abstract: A method for the biodegradation on an oil-based sludge comprising a mixture of petroleum hydrocarbons is disclosed. The method comprises forming an aqueous solution in a reactor of an oil-in-water emulsion of the oil-based sludge, bacterial culture and nutrients for the bacterial culture, the bacterial culture having the ability to grow on petroleum hydrocarbons as sole carbon source and having been isolated from a hydrocarbon contaminated soil or hydrocarbon-containing sludge or other environments rich in hydrocarbon degrading bacteria, maintaining the aqueous solution under aerobic conditions in the reactor at a temperature of at least 10° C. for a period of time sufficient to reduce the amount of hydrocarbon by at least 25%, and discharging aqueous solution having a reduced amount of hydrocarbons from the reactor. The method may be used on sludge containing aromatics, resins and asphaltenes.
    Type: Application
    Filed: January 21, 2003
    Publication date: August 14, 2003
    Inventors: Owen P. Ward, Ajay Singh
  • Patent number: 6251058
    Abstract: A method for removal of organic contaminants from solid particulate soil contaminated with the organic contaminants. The method comprises forming an aqueous slurry of a mixture of a hydrophobic adsorbent selected from foamed synthetic materials or natural materials which entrap gas, with the soil in the presence of water. The adsorbent has a density less than water. The slurry is mixed for a period of time, and a gravity separation of the adsorbent from the aqueous admixture thus obtained is effected.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: June 26, 2001
    Assignee: Petrozyme Technologies, Inc.
    Inventors: Owen P. Ward, Ajay Singh, Kate Billingsley