Patents by Inventor Seiryo Tasaki

Seiryo Tasaki 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).

  • Process for producing an anti-thrombogenic material by graft polymerization
    Patent number: 4897433
    Abstract: A process for producing a medical material having high anti-thrombogenicity that is suitable for use in catheters and other medical devices in contact with blood flowing in circulatory organs and other tissues is disclosed. According to this process, an acrylamide or methacrylamide derivative having a tertiary amino group, or an unsaturated monomer having a hydrophihlic group and the ability to promote copolymerization, or a mixture thereof is graft polymerized onto a polyurethane elastomeric or polyolefinic high-molecular weight substrate with an ionizing radiation.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: January 30, 1990
    Assignees: Japan Atomic Energy Research Inst., Sumitomo Bakelite Co., Ltd.
    Inventors: Takanobu Sugo, Jiro Okamoto, Seiryo Tasaki, Tadayuki Onishi