Patents by Inventor Hiroharu Ishikawa

Hiroharu Ishikawa 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).

  • Healthy foods and cosmetics
    Patent number: 5972357
    Abstract: The present invention relates to healthy foods and cosmetics. More particularly, it relates to healthy foods and cosmetics containing a polyisoprenylated benzophenone derivatives as effective ingredients and having a variety of functions for maintaining health such as anti-ulcer activity, the Maillard reaction inhibiting activity, anti-oxidation activity, reactive oxygen species scavenging activity, and anti-tumor promotion activity.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: October 26, 1999
    Assignee: Kikkoman Corporation
    Inventors: Fumio Yamaguchi, Makoto Saito, Hiroharu Ishikawa, Shigehiro Kataoka, Toshiaki Ariga
  • Agent for the prevention or treatment of cataracts
    Patent number: 5804597
    Abstract: An agent for the prevention or treatment of cataracts comprising a proanthocyanidin oligomer is provided. The oral administration or application to the eyes of the agent of the invention produces a sufficient preventive or therapeutic effect against cataracts caused by oxidative disorders.
    Type: Grant
    Filed: January 6, 1997
    Date of Patent: September 8, 1998
    Assignee: Kikkoman Corporation
    Inventors: Jun Yamakoshi, Toshiaki Ariga, Hiroharu Ishikawa, Yukihiko Iwai, Tatuo Manaka, Shigehiro Kataoka, Katsumi Yuasa, Mamoru Kikuchi
  • Pharmaceutical preparation for prevention and/or treatment for cataract
    Patent number: 5698585
    Abstract: In order to prevent or treat cataract, present invention features 3(2H)-furanone derivatives having 3(2H)-furanone skeleton as a main structure and/or pharmaceutically acceptable salts thereof, pharmaceutical preparations containing the derivatives and/or the salts thereof, treatment methods of cataract, and their use. The 3(2H)-furanone derivatives have excellent effects for the prevention and/or treatment of cataract, for instance, senile cataract caused by oxidation disorder. Particularly, the pharmaceutical preparations have good effect for the prevention and/or treatment of cataract when they are administrated as ophtalmics.
    Type: Grant
    Filed: April 12, 1996
    Date of Patent: December 16, 1997
    Assignee: Kikkoman Corporation
    Inventors: Jun Yamakoshi, Tsutomu Sasaki, Hiroharu Ishikawa, Yukihiko Iwai, Takanao Matsudo, Kenji Mori, Mamoru Kikuchi