Patents by Inventor Yoshitsugu Ozasa

Yoshitsugu Ozasa 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).

  • Skin whitening cosmetics
    Patent number: 5078989
    Abstract: A cosmetic comprising a compound represented by formula (I) is disclosed: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, each represents a hydrogen atom or CH.sub.3 (CH.sub.2).sub.3 (CH.sub.2 CH.dbd.CH).sub.2 (CH.sub.2).sub.7 CO--, provided that at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is not a hydrogen atom.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: January 7, 1992
    Assignee: Sunstar K.K.
    Inventors: Hideya Ando, Mitsuaki Shimizu, Akira Hashimoto, Hisatoya Kato, Yoshitsugu Ozasa