Patents by Inventor Akira Minamida

Akira Minamida 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).

  • Quinoline derivatives and antibacterial agent containing them
    Patent number: 5164392
    Abstract: A quinoline derivative of the formula ##STR1## wherein Z is an amino group or a halogen atom, and R.sub.1, R.sub.2 and R.sub.3 are the same or different and each represents a hydrogen atom or a lower alkyl group having 1 to 5 carbon atoms,and an ester thereof and a salt of the derivative or the ester and processes for preparation thereof. These compounds show excellent antibacterial activity and are useful as antibacterial agents.
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: November 17, 1992
    Assignee: Dainippon Pharmaceutical Co., Ltd.
    Inventors: Jun-ichi Matsumoto, Akira Minamida, Masahiro Fujita, Tohru Hirose, Junji Nakano, Shinichi Nakamura
  • Oxo quinoline derivatives
    Patent number: 5013841
    Abstract: A quinoline derivative of the formula ##STR1## wherein Z is an amino group or a halogen atom, and R.sub.1, R.sub.2 and R.sub.3 are the same or different and each represents a hydrogen atom or a lower alkyl group having 1 to 5 carbon atoms,and an ester thereof and a salt of the derivative or the ester and processes for preparation thereof. These compounds show excellent antibacterial activity and are useful as antibacterial agents.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: May 7, 1991
    Assignee: Dainippon Pharmaceutical Co., Ltd.
    Inventors: Jun-ichi Matsumoto, Akira Minamida, Masahiro Fujita, Tohru Hirose, Junji Nakano, Shinichi Nakamura