Patents by Inventor Hisasi Sasamoto

Hisasi Sasamoto 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 appliance made of plastic
    Patent number: 3940802
    Abstract: A medical appliance suitable for use in direct or indirect contact with blood, such as an artificial valve, artificial blood vessel, blood transfusion set, solution infusion set, or blood bag characterized by being composed of 100 parts by weight of polyvinyl chloride and as plasticizer 50 to 100 parts by weight of thermoplastic polyurethane of the polyester type, said polyurethane having a softening point of about 70.degree.C and giving no spot other than that of the origin at the same position loaded the test sample onto the plate in thin-layer chromatogram.
    Type: Grant
    Filed: January 24, 1975
    Date of Patent: March 2, 1976
    Assignee: The Green Cross Corporation
    Inventors: Eiji Sako, Hisasi Sasamoto