Patents by Inventor Naoe Akiyama

Naoe Akiyama 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).

  • External preparation for skin
    Patent number: 5690914
    Abstract: An external preparation for skin including one or more than two types of tranexamic acid derivatives represented by the following general formula (A). GENERAL FORMULA (A) ##STR1## (In the formula (A), R.sub.1, R.sub.2 and R.sub.3 represents hydrogen atoms or substituents and at least one of these is the substituent.) The external preparation for skin including the derivatives have excellent depigmentation effect as well as skin care effect.
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: November 25, 1997
    Assignee: Shiseido Co., Ltd
    Inventors: Masaru Suetsugu, Manami Ohnuma, Yoshihiro Morikawa, Yuki Yamase, Naoe Akiyama, Kenji Kitamura
  • Washing composition capable of preventing and ameliorating skin irritation
    Patent number: 5306444
    Abstract: A washing composition for a domestic or business detergent and a skin cleanser containing one or more compounds having a protease inhibitory activity.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: April 26, 1994
    Assignee: Shiseido Company Ltd.
    Inventors: Kenji Kitamura, Yasukazu Nakayama, Naoe Akiyama, Eriko Kasahara