Patents by Inventor Taisuke Otsubo

Taisuke Otsubo 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).

  • Filter element and its production
    Patent number: 5114508
    Abstract: The present invention provides a filter element made wholly of fluorocarbon resin and production thereof. As the filter element is wholly made of fluorocarbon resin, it has an excellent chemicals resistance, and temperature resistance and is free from metal leaching. Though it has been difficult to produce such a fluorocarbon filter element free from leakage, in the present invention it can be produced at high yield.
    Type: Grant
    Filed: July 21, 1987
    Date of Patent: May 19, 1992
    Inventors: Tokuya Miyagi, Akihisa Inoue, Taisuke Otsubo, Yoshihiro Hori
  • Centrifuge tube
    Patent number: D332145
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: December 29, 1992
    Assignee: Kurashiki Boseki Kabushiki Kaisha
    Inventors: Atsuki Wada, Eiji Ohmae, Yoshiro Hirajima, Taisuke Otsubo, Akira Kasuya