Patents by Inventor Sharon M. Fukuyama

Sharon M. Fukuyama 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).

  • Method for removing tetranitromethane from nitric acid
    Patent number: 5589037
    Abstract: Tetranitromethane and other polynitrated methanes can be effectively removed from otherwise substantially organic-free nitric acid streams through the addition of substantially organic-free concentrated sulfuric acid and by, optionally, performing secondary operations such as sparging the mixed acid stream with a gas such as nitric oxide or with an oil.
    Type: Grant
    Filed: October 24, 1995
    Date of Patent: December 31, 1996
    Assignee: General Electric Company
    Inventors: Thomas L. Guggenheim, Sharon M. Fukuyama, Gregory L. Warner
  • Cycloalkene terminated polyarylene ether and polyarylene etherpolyalkenamer copolymers made therefrom
    Patent number: 5162449
    Abstract: Polyarylene ether-polyalkenamer copolymers are provided by effecting a ring-opening metathesis polymerization (ROMP) of a cycloalkene such as, cyclooctene in the presence of a polyarylene ether having an ester link cycloalkenyl group. An effective amount of a metallic catalyst, such as an osmium or a ruthenium halide, can be used to catalyze the metathesis.
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: November 10, 1992
    Assignee: General Electric Company
    Inventors: Timothy M. Sivavec, Sharon M. Fukuyama
  • Preparation of anhydride-capped polyphenylene ether in a melt process
    Patent number: 5141999
    Abstract: Polyphenylene ethers are capped by reaction in the melt, with application of vacuum, with at least one trimellitamide, preferably phenyl 4-aminosalicylate trimellitamide. The preferred melt processing method is extrusion with vacuum venting. By this method, the polyphenylene ether is capped with reactive anhydride groups improving its thermo-oxidative stability. The capped polyphenylene ether is capable of forming copolymers with polyamides, and said copolymers are useful as compatibilizers for polyphenylene ether-polyamide blends.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: August 25, 1992
    Assignee: General Electric Company
    Inventors: Timothy M. Sivavec, Sharon M. Fukuyama
  • Polyphenylene ether-polyamide compositions
    Patent number: 5140077
    Abstract: Polyphenylene ethers are capped by reaction in the melt, with application of vacuum, with at least one trimellitamide, preferably phenyl 4-aminosalicylate trimellitamide. The preferred melt processing method is extrusion with vacuum venting. By this method, the polyphenylene ether is capped with reactive anhydride groups improving it therm-oxidative stability. The capped polyphenylene ether is capable of forming copolymers with polyamides and said copolymers are useful as compatibilizers for polyphenylene ether-polyamide blends.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: August 18, 1992
    Assignee: General Electric Company
    Inventors: Timothy M. Sivavec, Sharon M. Fukuyama
  • Cycloalkene terminated polyarylene ether
    Patent number: 5100972
    Abstract: Polyarylene ether-polyalkenamer copolymers are provided by effecting a ring-opening metathesis polymerization (ROMP) of a cycloalkene such as, cyclooctene in the presence of a polyarylene ether having an ester link cycloalkenyl group. An effective amount of a metallic catalyst, such as an osmium or a ruthenium halide, can be used to catalyze the metathesis.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: March 31, 1992
    Assignee: General Electric Company
    Inventors: Timothy M. Sivavec, Sharon M. Fukuyama