Patents by Inventor Lia Kouchachvili

Lia Kouchachvili 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).

  • High performance P(VDF-TrFE) copolymer for pyroelectric conversion
    Patent number: 7323506
    Abstract: A process for purifying a P(VDF-TrFE) copolymer to produce an improved high performance copolymer for pyroelectric conversion. Pellets of a P(VDF-TrFE) copolymer are dissolved in a solvent to form a solution. Subsequently, anhydrous ethanol is added to the solution to initiate copolymer gel precipitation, after which the solution is separated to obtain the gel precipitate, which is subsequently washed and dried. The resulting copolymer has fewer impurities and higher resistivity, thereby being suitable for use in applications such as pyroelectric converters. The purified copolymer also exhibits phase transition characteristics that allow for increased power output.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: January 29, 2008
    Assignee: Natural Resources Canada
    Inventors: Lia Kouchachvili, Michio Ikura
  • High performance P(VDF-TrFE) copolymer for pyroelectric conversion
    Publication number: 20060122299
    Abstract: A process for purifying a P(VDF-TrFE) copolymer to produce an improved high performance copolymer for pyroelectric conversion. Pellets of a P(VDF-TrFE) copolymer are dissolved in a solvent to form a solution. Subsequently, anhydrous ethanol is added to the solution to initiate copolymer gel precipitation, after which the solution is separated to obtain the gel precipitate, which is subsequently washed and dried. The resulting copolymer has fewer impurities and higher resistivity, thereby being suitable for use in applications such as pyroelectric converters. The purified copolymer also exhibits phase transition characteristics that allow for increased power output.
    Type: Application
    Filed: December 2, 2004
    Publication date: June 8, 2006
    Inventors: Lia Kouchachvili, Michio Ikura