Patents by Inventor Akira Amenomori

Akira Amenomori 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).

  • Purine derivatives and medicaments comprising the same as active ingredient
    Patent number: 6734187
    Abstract: Purine derivatives represented by the following formula and salts thereof: wherein R1 represents a C1-C4 alkyl group or difluoromethyl group; R2 represents tetrahydrofuranyl group, a C1-C7 alkyl group and the like; X represents hydrogen atom, a halogen atom or nitro group; and A represents a group represented by the following formula: wherein R3 represents hydrogen atom, a halogen atom and the like; R4 and R5 represent hydrogen atom, a halogen atom, a C1-C4 alkyl group, a C1-C4 alkoxyl group and the like, which are useful as active ingredients of medicaments such as antiasthmatic agents.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: May 11, 2004
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Toshihiko Tanaka, Eiichirou Iwashita, Akiko Tarao, Akira Amenomori, Yuya Ono
  • 3-phenylpyrrolidine derivatives
    Patent number: 5545647
    Abstract: 3-Phenylpyrrolidine compounds of the formula ##STR1## effectively inhibit phosphodiesterase (PDE) IV activities and can be used as medicaments for conditions such as asthma.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: August 13, 1996
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Toshihiko Tanaka, Akihiro Yamamoto, Akira Amenomori