Patents by Inventor Kazuyuki Yahagi

Kazuyuki Yahagi 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).

  • Hair cosmetic composition
    Patent number: 4711776
    Abstract: A hair cosmetic composition contains (A) 0.01 -20 wt % of one or more of specific branched quaternary ammonium salts and (B) 0.1-30 wt % of oils and fats. The hair cosmetic composition is excellent in imparting softness, smoothness and antistaticity to the hair and even when oils and fats are contained in a large amount, does not leave oily appearance or feeling on the hair.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: December 8, 1987
    Assignee: Kao Corporation
    Inventors: Toshio Suzuki, Kazuyuki Yahagi