Patents Assigned to Sansho Seiyaku Kabushiki Kaisha
  • 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
  • Process for preparing melanogenic inhibitor, and pigmentation-lightening agent containing the same
    Patent number: 5077059
    Abstract: The present invention relates to a process for preparing a melanogenic inhibitor and a pigmentation-lightening agent containing the same, more particularly, the present invention relates to a process for preparing a novel melanogenic inhibitor which is obtained by proliferating an established cell line from a warm-blooded animal, homogenizing the proliferated cells and recovering the same from the resultant homogenate, as well as to a pigmentation-lightening agent containing the same.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: December 31, 1991
    Assignees: Mishimazo Yuaka, Seibutsu Kagaku Kenkyujo, Sansho Seiyaku Kabushiki Kaisha, Sansho Seiyaku Kabushiki Kaisha
    Inventors: Yuyaka Mishima, Yasuaki Oyama, Masashi Kurimoto