Patents by Inventor Norihiro Igari

Norihiro Igari 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).

  • Publication number: 20020010182
    Abstract: This invention relates to piperazine derivatives of the formula: 1
    Type: Application
    Filed: July 9, 2001
    Publication date: January 24, 2002
    Applicant: FUJISAWA PHARMACEUTICAL CO., LTD.
    Inventors: Matsuo Masaaki, Takashi Manabe, Nobukiyo Konishi, Kazuhiko Take, Norihiro Igari, Shinji Shigenaga, Hiroshi Matsuda, Tadashi Terasaka
  • Patent number: 6087357
    Abstract: This application is a 371 of PCT/JP96/03641 filed Dec. 12, 1996.
    Type: Grant
    Filed: June 18, 1998
    Date of Patent: July 11, 2000
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Masaaki Matsuo, Takashi Manabe, Nobukiyo Konishi, Kazuhiko Take, Norihiro Igari, Shinji Shigenaga, Hiroshi Matsuda, Tadashi Terasaka
  • Patent number: 5369107
    Abstract: Compounds of the formula: ##STR1## wherein A is S, SO, or SO.sub.2, R.sup.1 is H or acyl, R.sup.2 is H, alkyl, hydroxyalkyl, halogen or carboxy, and R.sup.3 is pyridyl are claimed. The compounds are useful as therapeutic agents for the treatment of e.g. rheumatism, nephritis and thrombocytopenia.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: November 29, 1994
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Masaaki Matsuo, Takashi Ogino, Norihiro Igari, Hachiro Seno, Kyoichi Shimomura
  • Patent number: 5256675
    Abstract: Compounds of the formula: ##STR1## wherein A is S, SO, or SO2, R1 is H or acyl, R2 is H, alkyl, hydroxyalkyl, halogen or carboxy, and R3 is pyridyl are claimed. The compounds are useful as therapeutic agents for the treatment of e.g. rheumatism, nephritis and thrombocytopenia.
    Type: Grant
    Filed: April 14, 1992
    Date of Patent: October 26, 1993
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Masaaki Matsuo, Takashi Ogino, Norihiro Igari, Hachiro Seno, Kyoichi Shimomura