Patents by Inventor Masakatsu Osaki

Masakatsu Osaki 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).

  • Lanolin fatty acids, a method for their fractionation, cosmetics and drugs for external use
    Patent number: 5556970
    Abstract: The invention provides a process comprising treating a lanolin fatty acid with boric acid to convert hydroxy fatty acids therein to boric acid esters, subjecting the reaction mixture to vacuum distillation to fractionate the boric acid esters of hydroxy fatty acids from non-hydroxy fatty acids, hydrolyzing the boric acid esters, and subjecting the hydrolysate to vacuum distillation to provide .alpha.-hydroxy fatty acids and .omega.-hydroxy fatty acids, the resultant respective lanolin fatty acids and esters, and cosmetic products and drug products for external use containing them.According to the invention, pale-colored, substantially odor-free lanolin fatty acids can be obtained easily and with high efficiency and these compounds can be effectively utilized in the pharmaceutical and cosmetic field.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: September 17, 1996
    Assignee: Yoshikawa Oil & Fat Co., Ltd.
    Inventors: Toshiyuki Kawasaki, Isao Kato, Kenji Noda, Masakatsu Osaki, Katsuhiko Miyazaki, Hidekazu Nayeshiro, Hideya Ando