Patents by Inventor Eiji O'Shima

Eiji O'Shima 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).

  • Apparatus for suspension polymerization
    Patent number: 6264357
    Abstract: A method of suspension polymerization of a monomeric composition to produce a polymer or a polymer composition is disclosed which method comprises the steps of retaining a disperse phase component composed of the monomeric composition and a continuous phase component composed of a medium in independent vessels, supplying the disperse phase component and the continuous phase component from their respective vessels into a disperser simultaneously and continuously through associated independent passageways, applying shear force in the disperser to form a dispersion having droplets of a desired size, subsequently introducing the dispersion into a polymerization vessel, and completing a polymerizating reaction to produce a polymer or a polymer composition.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: July 24, 2001
    Assignee: Tomoegawa Paper Co., Ltd.
    Inventors: Masafumi Kamiyama, Haruhiko Yano, Minoru Tsuchida, Eiji O'Shima
  • Method and apparatus of suspension polymerization
    Patent number: 6140394
    Abstract: A method of suspension polymerization of a monomeric composition to produce a polymer or a polymer composition is disclosed which method comprises the steps of retaining a disperse phase component composed of the monomeric composition and a continuous phase component composed of a medium in independent vessels, supplying the disperse phase component and the continuous phase component from their respective vessels into a disperser simultaneously and continuously through associated independent passageways, applying shear force in the disperser to form a dispersion having droplets of a desired size, subsequently introducing the dispersion into a polymerization vessel, and completing a polymerizating reaction to produce a polymer or a polymer composition.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: October 31, 2000
    Assignee: Tomoegawa Paper Co.
    Inventors: Masafumi Kamiyama, Haruhiko Yano, Minoru Tsuchida, Eiji O'shima