Patents by Inventor Takao Nagahama

Takao Nagahama 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).

  • Pyridine derivative and pharmaceutical containing the same
    Patent number: 6511995
    Abstract: A pyridine derivative represented by formula (1) wherein all the variables have been defined in the specification. The compounds are used for inhibiting collagen production and are useful for preventing or treating fibrosis.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: January 28, 2003
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Kouji Edamatsu, Takao Nagahama, Satoshi Hayakawa, Yutaka Kojima, Makoto Sakamoto, Koichi Yasumura
  • Pyrimidine derivative
    Patent number: 6197774
    Abstract: The present invention provides a novel pyrimidine derivative represented by the general formula (1): (wherein R, R4 and R8 are the same as defined in the specification) or pharmaceutically acceptable salt thereof, which possesses an excellent activity for inhibiting the formation of NO (nitrogen oxide) in vivo.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: March 6, 2001
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Satoshi Yamada, Naosumi Kinoshita, Koichi Yasumura, Kouji Edamatsu, Takao Nagahama, Shintaro Ishikawa, Takeshi Yamauchi, Kazumasa Kishi, Kazuhisa Sugiyama
  • Maillard reaction inhibitor
    Patent number: 5677322
    Abstract: A compound represented by the following formula is disclosed: ##STR1## wherein the all symbols are defined in the disclosure. A process for producing the compound, and a method for treating diseases caused by a Maillard reaction in living body using the compound are also disclosed.
    Type: Grant
    Filed: October 21, 1994
    Date of Patent: October 14, 1997
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Koichi Yasumura, Keisuke Miyajima, Takao Nagahama, Shintaro Ishikawa, Yuko Nakagawa, Kazuhisa Sugiyama