Patents Assigned to Yutaka Mishima
  • Skin-whitening agent
    Patent number: 5262153
    Abstract: Lactic acid and its derivatives such as D-lactic acid, L-lactic acid, DL-lactic acid, and their nonmetallic derivatives and lactates of alkali metal or alkaline earth metal exhibit a strong skin-whitening effect at a concentration of 5 w/w % or higher in pigment cell. The skin-whitening effect is augmented by unsaturated fatty acids having a carbon number of 12-22.
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: November 16, 1993
    Assignees: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkujo, Sansho Seiyaku Kabushiki Kaisha, Yutaka Mishima
    Inventors: Yutaka Mishima, Yasuaki Oyama, Masashi Kurimoto