Patents Examined by Wendy B. Catchpole
  • Whitening cosmetic
    Patent number: 4847074
    Abstract: A whitening cosmetic comprises kojic acid and cyclodextrins in addition to cosmetic base materials. The kojic acid may be included in cyclodextrins before being incorporated into the cosmetic. The cosmetic has an improved stability against coloring with the passage of time and an enhance whitening effect. The cosmetic can be a toilet lotion, a cosmetic cream, a milky lotion, a pack, etc., for application to human skin.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: July 11, 1989
    Assignee: Sansho Seiyaku Co., Ltd.
    Inventors: Shinkichi Hatae, Kazuo Nakashima