Patents by Inventor Yukiko Harada

Yukiko Harada 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).

  • Polyaspartic acid Zwitterionic derivatives, preparation processes thereof, hair-treating compositions and cosmetic compositions
    Patent number: 5686066
    Abstract: Disclosed are polymers (polyaspartic acid Zwitterionic derivatives) containing, in the molecule, 1 mol % or more of at least one repeating unit selected from the group consisting of repeating units represented by the following formulas (1) and (2). ##STR1## These polymers are useful in the preparation of hair-treating compositions and cosmetic compositions having excellent hairdressing properties and good biocompatibility.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: November 11, 1997
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Yukiko Harada, Hosei Shinoda, Makoto Sukegawa, Hiroaki Tamatani