Patents by Inventor Kameshwar Poolla

Kameshwar Poolla 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: 20230221029
    Abstract: There is provided a method of controlling an air-conditioning system associated with a building for optimizing a plurality of building performance parameters in providing an environment with respect to a zone of the building, the method comprising: obtaining zone environmental condition information including zone temperature data associated to the zone, and cooling air temperature data associated to an air handling unit associated to the zone; obtaining, from a zone model generator, zone cooling load parameters associated to the zone with respect to a plurality of time periods and a zone thermal dynamic model; obtaining, from a scheduler, a sequence of optimal cool air supply rates with respect to a plurality of subsequent time periods with respect to the zone determined based on a multi-component cost function including a plurality of components relating to the plurality of building performance parameters; determining, based on the zone thermal dynamic model, a sequence of zone controller set-points correspo
    Type: Application
    Filed: April 6, 2021
    Publication date: July 13, 2023
    Inventors: Rong SU, Lih Chieh PNG, Seshadhri SRINIVASAN, Kameshwar POOLLA
  • Patent number: 7403834
    Abstract: Presented are methods and apparatus for controlling the processing of a substrate during a process step that is sensitive to one or more process conditions. One embodiment includes a method performed with corresponding apparatus that includes a controller. One step includes constructing a perturbation model relating changes in control parameters for the apparatus to one or more resulting changes in the process. The method also includes the step of using the perturbation model with at least one of a performance objective and a constraint to derive optimized control parameters for the controller. Another step in the method includes operating the controller with the optimized control parameters. Another embodiment includes an apparatus for processing substrates where the apparatus comprises optimized control parameters.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: July 22, 2008
    Assignee: Regents of the University of California
    Inventors: Kameshwar Poolla, Costas J. Spanos
  • Patent number: 7299148
    Abstract: This invention seeks to provide methods and apparatus that can improve the accuracy of measured parameter data used for processing workpieces. One aspect of the present invention includes methods of measuring process conditions with low distortion of the measurements caused by the measuring apparatus. The measurements include data for applications such as data for monitoring, controlling, and optimizing processes and process tools. Another aspect of the present invention includes apparatus for measuring substantially correct data for applications such as generating data for monitoring, controlling, and optimizing processes and process tools.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: November 20, 2007
    Assignee: OnWafer Technologies, Inc.
    Inventors: Dean Hunt, Costas J. Spanos, Michael Welch, Kameshwar Poolla, Mason L. Freed
  • Patent number: 7212950
    Abstract: Computer program products, methods, systems, and apparatus for fingerprinting and process matching process tools such as process tools used for processing workpieces are described. One embodiment includes a method to determine process matching of one or more process tools using a first data set and a second data set. The first data set and the second data set include an operating characteristic for a process. The method comprises fingerprinting the one or more process tools using the first data set and the second data set; finding correspondences between transition points in the first data set and the second data set; and comparing the first data set and second data set using the correspondences to determine whether the first data set and the second data set match so as to indicate whether the one or more process tools match.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: May 1, 2007
    Assignee: OnWafer Technologies, Inc.
    Inventor: Kameshwar Poolla
  • Publication number: 20060089740
    Abstract: Presented are methods and apparatus for controlling the processing of a substrate during a process step that is sensitive to one or more process conditions. One embodiment includes a method performed with corresponding apparatus that includes a controller. One step includes constructing a perturbation model relating changes in control parameters for the apparatus to one or more resulting changes in the process. The method also includes the step of using the perturbation model with at least one of a performance objective and a constraint to derive optimized control parameters for the controller. Another step in the method includes operating the controller with the optimized control parameters. Another embodiment includes an apparatus for processing substrates where the apparatus comprises optimized control parameters.
    Type: Application
    Filed: September 14, 2005
    Publication date: April 27, 2006
    Inventors: Kameshwar Poolla, Costas Spanos
  • Patent number: 7016754
    Abstract: Presented are methods and apparatus for controlling the processing of a substrate during a process step that is sensitive to one or more process conditions. One embodiment includes a method performed with corresponding apparatus that includes a controller. One step includes constructing a perturbation model relating changes in control parameters for the apparatus to one or more resulting changes in the process. The method also includes the step of using the perturbation model with at least one of a performance objective and a constraint to derive optimized control parameters for the controller. Another step in the method includes operating the controller with the optimized control parameters. Another embodiment includes an apparatus for processing substrates where the apparatus comprises optimized control parameters.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: March 21, 2006
    Assignee: OnWafer Technologies, Inc.
    Inventors: Kameshwar Poolla, Costas J. Spanos
  • Publication number: 20060052969
    Abstract: This invention seeks to provide methods and apparatus that can improve the accuracy of measured parameter data used for processing workpieces. One aspect of the present invention includes methods of measuring process conditions with low distortion of the measurements caused by the measuring apparatus. The measurements include data for applications such as data for monitoring, controlling, and optimizing processes and process tools. Another aspect of the present invention includes apparatus for measuring substantially correct data for applications such as generating data for monitoring, controlling, and optimizing processes and process tools.
    Type: Application
    Filed: July 8, 2005
    Publication date: March 9, 2006
    Inventors: Dean Hunt, Costas Spanos, Michael Welch, Kameshwar Poolla, Mason Freed
  • Patent number: 6907364
    Abstract: Presented are methods, systems, and apparatus for deriving heat flux information and using heat flux information for a workpiece used in temperature sensitive processes.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: June 14, 2005
    Assignee: OnWafer Technologies, Inc.
    Inventors: Kameshwar Poolla, Randall S. Mundt
  • Publication number: 20050028049
    Abstract: Described are methods and apparatus for a sensor apparatus for collecting measured parameter data for such applications as deriving response models and information required for developing and maintaining processes and process tools.
    Type: Application
    Filed: May 17, 2004
    Publication date: February 3, 2005
    Inventors: Kameshwar Poolla, Costas Spanos
  • Publication number: 20040249604
    Abstract: Presented are methods and apparatus for controlling the processing of a substrate during a process step that is sensitive to one or more process conditions. One embodiment includes a method performed with corresponding apparatus that includes a controller. One step includes constructing a perturbation model relating changes in control parameters for the apparatus to one or more resulting changes in the process. The method also includes the step of using the perturbation model with at least one of a performance objective and a constraint to derive optimized control parameters for the controller. Another step in the method includes operating the controller with the optimized control parameters. Another embodiment includes an apparatus for processing substrates where the apparatus comprises optimized control parameters.
    Type: Application
    Filed: September 26, 2003
    Publication date: December 9, 2004
    Inventors: Kameshwar Poolla, Costas J. Spanos
  • Publication number: 20040131226
    Abstract: Presented are methods, systems, and apparatus for finger printing and process matching process tools such as process tools used for processing workpieces.
    Type: Application
    Filed: September 17, 2003
    Publication date: July 8, 2004
    Inventor: Kameshwar Poolla
  • Publication number: 20040107066
    Abstract: Presented are methods, systems, and apparatus for deriving heat flux information and using heat flux information for a workpiece used in temperature sensitive processes.
    Type: Application
    Filed: September 16, 2003
    Publication date: June 3, 2004
    Inventors: Kameshwar Poolla, Randall S. Mundt
  • Publication number: 20020177916
    Abstract: Described are methods and apparatus for collecting measured parameter data for applications such as deriving response models and information required for developing and maintaining processes and process tools. The methods and apparatus are capable of deriving correction factors for the measured data and applying the corrections factors to the measure data so as to provide corrected parameter data having increased accuracy. One embodiment uses warpage geometry to derive the correction factors.
    Type: Application
    Filed: April 19, 2002
    Publication date: November 28, 2002
    Inventors: Kameshwar Poolla, Costas J. Spanos