Patents by Inventor Kaoru Takatori

Kaoru Takatori 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).

  • Tyrosinase activity inhibitor
    Patent number: 5399785
    Abstract: Disclosed is a chemically stable tyrosinase activity inhibitor having high tyrosinase activity inhibition effect and low toxicity. The tyrosinase activity inhibitor has a structure of the formula: ##STR1## wherein R.sub.1, R.sub.3 and R.sub.4 are a hydrogen atom or an alkyl or alkenyl group having 1 to 9 carbon atoms, and R.sub.2 is an alkyl or alkenyl group having 2 to 9 carbon atoms.
    Type: Grant
    Filed: August 4, 1993
    Date of Patent: March 21, 1995
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Yasutaka Miura, Yasuhiro Kinoshita, Yoshikazu Yamamoto, Kunio Takahashi, Kiyotaka Koyama, Kaoru Takatori