Patents by Inventor Yasuaki Ohyama

Yasuaki Ohyama 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).

  • Agents for preventing the formation of gray hairs
    Patent number: 4978525
    Abstract: Agents highly effective in preventing hair from turning gray with no adverse effects upon skin or hair contain, as an active ingredient, an unsaturated fatty acid or an ester thereof represented by the following general formula:A--COOR[wherein A is a radical of CH.sub.2 .dbd.CH(CH.sub.2).sub.n - or CH.sub.3 (CH.sub.2).sub.10 CH.dbd.CH-(CH.sub.2).sub.m -, R is hydrogen atom or alkyl group having 1 or 2 carbon atoms, n is an integer 0 to 22, and m is an integer 5 or 6].
    Type: Grant
    Filed: March 27, 1989
    Date of Patent: December 18, 1990
    Assignee: Sansho Seiyaku Co., Ltd.
    Inventor: Yasuaki Ohyama