Patents by Inventor Tokio Kataoka

Tokio Kataoka 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).

  • Rubber closure device for vials
    Patent number: 4366912
    Abstract: A rubber closure device for closing the mouth of a vial or like vessel comprises an inner closure member having a leg portion adapted to tightly protrude into the mouth, and an overlay closure member overlaying the inner closure member. The inner closure member is made of fluorinated rubber and has a thickness sufficient to exhibit a resistance to chemicals.
    Type: Grant
    Filed: February 25, 1981
    Date of Patent: January 4, 1983
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yoshiharu Matukura, Tokio Kataoka, Hiroshi Fujisawa