Patents by Inventor Tsutomu Kaizu

Tsutomu Kaizu 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).

  • Anti-FR-900506 substance antibodies and highly-sensitive enzyme immunoassay method
    Patent number: 5532137
    Abstract: Monoclonal or polyclonal antibodies capable of recognizing at least one antigenic determinant located on the FR-900506 compound, are disclosed. FR-900506 isa compound having pharmacological activities such as immunosuppressive activity and antimicrobial activity, and has the following structure: ##STR1## Also disclosed are enzyme immunoassays for FR-900506 based on the antibodies of the invention and test kits for detection of FR-900506. A process for preparing a monoclonal antibody which selectively binds to FR-900506 is also disclosed.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: July 2, 1996
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Mineo Niwa, Kouichi Tamura, Tsutomu Kaizu, Masakazu Kobayashi
  • Antiretroviral agent, method of use thereas, and method of preparation
    Patent number: 5098927
    Abstract: Pyrroline compounds of the formulae (I) and (II) are effective in the treatment of retroviral infection and lymphadenopathy.
    Type: Grant
    Filed: January 10, 1991
    Date of Patent: March 24, 1992
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Kiyoshi Takatsuki, Yohsuke Maeda, Toshio Hattori, Tsutomu Kaizu, Masanori Okamoto, Yoshiko Yokota, Katsuya Nakamura, Hiroshi Kayakiri
  • Compound, WF11605 and derivative thereof
    Patent number: 4963585
    Abstract: The invention relates to a compound of antimicrobial activity of the formula ##STR1## wherein R.sup.1 is hydrogen or lower alkanoyl,R.sup.2 is hydrogen or ##STR2## in which R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are hydrogen or lower alkanoyl,R.sup.3 is carboxy or a protected carboxy, and pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: February 14, 1989
    Date of Patent: October 16, 1990
    Assignee: Fujisawa Pharmaceutical Company, Ltd.
    Inventors: Masanori Okamoto, Eisaku Tsujii, Tsutomu Kaizu, Hiroshi Hatanaka, Masakuni Okuhara, Kozo Sawada, Hirokazu Tanaka