Patents by Inventor Subramanian Sivaramakrishnan

Subramanian Sivaramakrishnan 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: 20200262203
    Abstract: An actuator component for a droplet deposition head, comprising: a plurality of fluid chambers, each fluid chamber being provided with a respective nozzle and a respective piezoelectric actuating element, which is actuable to cause the ejection of fluid from the chamber in question through the corresponding one of the nozzles by deforming a membrane, which bounds, in part, the chamber in question; wherein each piezoelectric actuating element comprises: a piezoelectric member having a top side and an opposing bottom side, the bottom side being nearest to the membrane, the top and bottom sides being spaced apart in a thickness direction; a lower electrode, disposed adjacent said bottom side of the piezoelectric member; an upper electrode, disposed adjacent said top side of the piezoelectric member; wherein each upper electrode comprises: a first layer, which is formed of a first conductive material; a second layer, which is formed of a second conductive material, the first layer being disposed between the secon
    Type: Application
    Filed: September 11, 2018
    Publication date: August 20, 2020
    Applicant: XAAR TECHNOLOGY LIMITED
    Inventors: Peter MARDILOVICH, Robert Errol MCMULLEN, Subramanian SIVARAMAKRISHNAN
  • Patent number: 10214009
    Abstract: An inkjet printhead comprising a printhead die, the printhead die comprising: a plurality of actuators; a plurality of electrical connections in electrical communication with respective first electrodes of the plurality of actuators for providing drive signals thereto; a first electrical bus arranged in common electrical communication with second electrodes of a first group of the actuators for providing first signals thereto; and a second electrical bus arranged in common electrical communication with second electrodes of a second group of the actuators for providing second signals thereto.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: February 26, 2019
    Assignee: Xaar Technology Limited
    Inventors: Robert Errol McMullen, James Edward David Marchant, Subramanian Sivaramakrishnan
  • Publication number: 20190006574
    Abstract: There is disclosed a piezoelectric thin film element comprising a first electrode, a second electrode and one or more piezoelectric thin films there between characterised in that the thin film element has at least two of: an electrode arrangement in which electrodes are arranged with the one or more piezoelectric thin films so that an electric field applied to a piezoelectric thin film or a portion of a piezoelectric thin film adjacent to the first electrode is lower than an electric field applied to a piezoelectric thin film or a portion of a piezoelectric thin film further from the first electrode when the piezoelectric thin film element actuated; a piezoelectric thin film adjacent to the first electrode in which a layer of the piezoelectric thin film near to the first electrode has a piezoelectric displacement constant which is lower than that of a layer of the piezoelectric thin film further from the first electrode; and a piezoelectric thin film adjacent to the first electrode in which a layer of the
    Type: Application
    Filed: June 10, 2016
    Publication date: January 3, 2019
    Applicant: XAAR TECHNOLOGY LIMITED
    Inventors: Peter Mardilovich, Susan Trolier-Mckinstry, Subramanian Sivaramakrishnan
  • Publication number: 20180170037
    Abstract: An inkjet printhead comprising a printhead die, the printhead die comprising: a plurality of actuators; a plurality of electrical connections in electrical communication with respective first electrodes of the plurality of actuators for providing drive signals thereto; a first electrical bus arranged in common electrical communication with second electrodes of a first group of the actuators for providing first signals thereto; and a second electrical bus arranged in common electrical communication with second electrodes of a second group of the actuators for providing second signals thereto.
    Type: Application
    Filed: June 3, 2016
    Publication date: June 21, 2018
    Inventors: Robert Errol MCMULLEN, James Edward David MARCHANT, Subramanian SIVARAMAKRISHNAN
  • Patent number: 7940899
    Abstract: Techniques using data matching and clustering algorithms are disclosed to aid investigators in detecting potentially fraudulent activity, performing risk analysis or assessing compliance with applicable regulations.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: May 10, 2011
    Assignee: PricewaterhouseCoopers LLP
    Inventors: John C. Moorman, III, Dhruv Chawla, Brian M. Castelli, Amy T. Leigh, Subramanian Sivaramakrishnan, Vorapong Sutanont, Sanjay Subramanian, Bennett R. Davis, Olufemi Tairu, Mehul Patel, John W. Dennis
  • Publication number: 20080086409
    Abstract: Techniques using data matching and clustering algorithms are disclosed to aid investigators in detecting potentially fraudulent activity, performing risk analysis or assessing compliance with applicable regulations.
    Type: Application
    Filed: October 6, 2006
    Publication date: April 10, 2008
    Inventors: John C. Moorman, Dhruv Chawla, Brian M. Castelli, Amy T. Leigh, Subramanian Sivaramakrishnan, Vorapong Sutanont, Sanjay Subramanian, Bennett R. Davis, Olufemi Tairu, Mehul Patel, John W. Dennis