Patents by Inventor Hitoshi Kitoh

Hitoshi Kitoh 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).

  • Medical instrument
    Patent number: 5429802
    Abstract: The blood flow channel sections of an oxygenator and a blood resevoir are hydrophilized by treatment with an acid, an albumin solution, polyhydroxy methacrylate, corona discharge, plasma or ozone, so that it has highly improved wettability by the priming liquid and the blood to prevent blood foaming. The blood flow channel sections of a medical instrument may be additionally hydrophilized by treatment with a polymer containing hydroxyethyl methacrylate and methyl methacrylate or in addition thereto a poly(oxyethylene)-poly(oxypropylene) block polymer.
    Type: Grant
    Filed: January 27, 1993
    Date of Patent: July 4, 1995
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Kazuhiko Hagiwara, Hitoshi Kitoh, Yoshihiro Oshibe, Hiroshi Ohmura