Patents by Inventor Gopakumar Sivasankarapillai

Gopakumar Sivasankarapillai 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).

  • Linear-hyperbranched polymers as performance additives for solid electrolytic capacitors
    Patent number: 10128054
    Abstract: Provided herein is an improved capacitor and a method for forming an improved capacitor. The method includes providing an anode and forming a dielectric on the anode. A linear-hyperbranched polymer is formed and a conductive polymer dispersion is prepared comprising at least one conducting polymer, one polyanion and the linear-hyperbranched polymer. A layer of the conductive polymer dispersion if formed wherein said dielectric is between the anode and the layer.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: November 13, 2018
    Assignee: KEMET Electronics Corporation
    Inventors: Antony P. Chacko, Gopakumar Sivasankarapillai, Yaru Shi, Philip M. Lessner
  • Linear-Hyperbranched Polymers as Performance Additives for Solid Electrolytic Capacitors
    Publication number: 20160254099
    Abstract: Provided herein is an improved capacitor and a method for forming an improved capacitor. The method includes providing an anode and forming a dielectric on the anode. A linear-hyperbranched polymer is formed and a conductive polymer dispersion is prepared comprising at least one conducting polymer, one polyanion and the linear-hyperbranched polymer. A layer of the conductive polymer dispersion if formed wherein said dielectric is between the anode and the layer.
    Type: Application
    Filed: May 9, 2016
    Publication date: September 1, 2016
    Inventors: Antony P. Chacko, Gopakumar Sivasankarapillai, Yaru Shi, Philip M. Lessner
  • Linear-hyperbranched polymers as performance additives for solid electrolytic capacitors
    Patent number: 9378898
    Abstract: Provided herein is an improved capacitor and a method for forming an improved capacitor. The method includes providing an anode and forming a dielectric on the anode. A linear-hyperbranched polymer is formed and a conductive polymer dispersion is prepared comprising at least one conducting polymer, one polyanion and the linear-hyperbranched polymer. A layer of the conductive polymer dispersion if formed wherein said dielectric is between the anode and the layer.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: June 28, 2016
    Assignee: Kemet Electronics Corporation
    Inventors: Antony P. Chacko, Gopakumar Sivasankarapillai, Yaru Shi, Philip M. Lessner
  • Synthesis of urethanes and polyurethanes catalysed by carbenes
    Patent number: 8759469
    Abstract: The present invention relates to a process for preparing a compound comprising at least a urethane group —HN—C(?O)—O, said process comprising a step (E) in which a compound (I) comprising at least an isocyanate functional group —N?C?O is reacted with an organic compound (II) carrying at least a hydroxyl group —OH, said reaction being carried out in a presence of a carbene (III) used as a catalyst.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: June 24, 2014
    Assignees: Vencorex Frence, Centre National de la Recherche Scientifique (C.N.R.S)
    Inventors: Gerard Mignani, Mathias Destarac, Daniel Taton, Yves Gnanou, Antoine Baceiredo, Tsuyoshi Kato, Fabien Bonnette, Gopakumar Sivasankarapillai
  • Linear-Hyperbranched Polymers as Performance Additives for Solid Electrolytic Capacitors
    Publication number: 20140160632
    Abstract: Provided herein is an improved capacitor and a method for forming an improved capacitor. The method includes providing an anode and forming a dielectric on the anode. A linear-hyperbranched polymer is formed and a conductive polymer dispersion is prepared comprising at least one conducting polymer, one polyanion and the linear-hyperbranched polymer. A layer of the conductive polymer dispersion if formed wherein said dielectric is between the anode and the layer.
    Type: Application
    Filed: December 6, 2013
    Publication date: June 12, 2014
    Applicant: Kemet Electronics Corporation
    Inventors: Antony P. Chacko, Gopakumar Sivasankarapillai, Yaru Shi, Philip M. Lessner
  • SYNTHESIS OF URETHANES AND POLYURETHANES CATALYSED BY CARBENES
    Publication number: 20110046301
    Abstract: The present invention relates to a process for preparing a compound comprising at least a urethane group —HN—C(?O)—O, said process comprising a step (E) in which a compound (I) comprising at least an isocyanate functional group —N?C?O is reacted with an organic compound (II) carrying at least a hydroxyl group —OH, said reaction being carried out in a presence of a carbene (III) used as a catalyst.
    Type: Application
    Filed: July 25, 2008
    Publication date: February 24, 2011
    Applicant: PERSTORP FRANCE
    Inventors: Gerard Mignani, Mathias Destarac, Daniel Taton, Yves Gnanou, Antoine Baceiredo, Tsuyoshi Kato, Fabian Bonnette, Gopakumar Sivasankarapillai