Patents by Inventor Osamu Hongoh

Osamu Hongoh 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).

  • Fluorenone derivatives, process for preparing the same and central or peripheral nerve degeneration repair and protective agent
    Patent number: 5942641
    Abstract: The present invention provides a novel fluorenone derivatives represented by the formula: ##STR1## wherein R.sup.a -R.sup.g are defined in the specification, and a method for repairing and protecting central or peripheral nerve degeneration comprising use of a fluorenone derivative represented by the formula: ##STR2## wherein R.sup.1, R.sup.2 p and q are as defined in the specification as an active component.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: August 24, 1999
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Tatsuyoshi Tanaka, Yohji Sakurai, Nobutaka Fujisawa, Osamu Hongoh, Takao Nishi