Patents by Inventor Ryouchi Tanaka

Ryouchi Tanaka 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).

  • Sheath of articulated tube for endoscope
    Patent number: 5110645
    Abstract: A sheath of an articulated tube for an endoscope is formed of material produced by adding polymer of fluorine-contained rubber material of triple copolymer of vinylidene fluoride-hexafluoropropylene-tetrafloroethylene as a main component, heat-proof plasticizer of binary copolymer of vinylidene fluoride-hexafluoropropyelne for reducing hardness, MT carbon filler, Perhexa 25B of peroxide vulcanizing agent and triallyl isocyanurate (TAIC) as peroxide vulcanizing assistant, resulting in reduced hardness, good operability while bending, good drug-, heat-, and sterilization-proof and long durability.
    Type: Grant
    Filed: September 2, 1991
    Date of Patent: May 5, 1992
    Assignee: Olympus Optical Company Ltd.
    Inventors: Jun Matsumoto, Ryouchi Tanaka