Patents by Inventor Chika Yamazaki

Chika Yamazaki 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).

  • Monohydrates of aminobenzenesulfonic acid derivatives and method for preparing thereof
    Patent number: 6245767
    Abstract: A monohydrate of an aminobenzenesulfonic acid derivative represented by the following formula (I), for example, 2-(1-piperazinyl)-5-methylbenzenesulfonic acid, is substantially free from weight change due to moisture absorption and can be weighed accurately in manufacturing a pharmaceutical composition for the treatment of heart diseases comprising said monohydrate.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: June 12, 2001
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Chika Yamazaki, Tadao Sato, Tatsuo Nagano
  • Monohydrates of aminobenzenesulfonic acid derivatives and method for preparing thereof
    Patent number: 5990113
    Abstract: A monohydrate of an aminobenzenesulfonic acid derivative represented by the following formula (I), for example, 2-(1-piperazinyl)-5-methylbenzenesulfonic acid, is substantially free from weight change due to moisture absorption and can be weighed accurately in manufacturing a pharmaceutical composition for the treatment of heart diseases comprising said monohydrate.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: November 23, 1999
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Chika Yamazaki, Tadao Sato, Tatsuo Nagano