Patents by Inventor Shigeyoshi Yasumura

Shigeyoshi Yasumura 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).

  • Plasminogen activator
    Patent number: 5342775
    Abstract: A novel plasminogen activator which is identical in peptide sequence to naturally occurring human prourokinase except that the 155th amino acid counting from the N-terminal amino acid (serine)] is other than the 155th amino acid (proline) of naturally occurring human prourokinase, optionally with the addition of methionine at the N terminus.
    Type: Grant
    Filed: June 16, 1992
    Date of Patent: August 30, 1994
    Assignee: Kyowa Hakko Kogyo Co. Ltd.
    Inventors: Shigeyoshi Yasumura, Tatsunari Nishi, Seiga Ito
  • Modified granulocyte-colony stimulating factor polypeptide with added carbohydrate chains
    Patent number: 5218092
    Abstract: A polypeptide or glycosylated polypeptide with at least one new carbohydrate chain produced by means of recombinant DNA technique, which has protease resistance and thermal stability and is expected to have longer lifetime in blood than those of a naturally-occurring form.
    Type: Grant
    Filed: September 27, 1989
    Date of Patent: June 8, 1993
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Katsutoshi Sasaki, Tatsunari Nishi, Shigeyoshi Yasumura, Moriyuki Sato, Seiga Itoh
  • Plasminogen activator
    Patent number: 5160735
    Abstract: A novel plasminogen activator which is identical in peptide sequence to naturally occurring human prourokinase except that the 155th amino acid counting from the N-terminal amino acid (serine) is other than the 155th amino acid (proline) of naturally occurring human prourokinase, optionally with the addition of methionine at the N terminus.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: November 3, 1992
    Assignee: Kyowa Hakko Kogyo Co. Ltd.
    Inventors: Shigeyoshi Yasumura, Tatsunari Nishi, Seiga Ito