Patents by Inventor Keiko Takasu

Keiko Takasu 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).

  • Cyclic amide derivatives
    Patent number: 5786367
    Abstract: The present invention provides novel cyclic amide derivatives having activity for protecting against the ultraviolet rays, activity for scavenging active oxygen species and activity for inhibiting the formation of lipid peroxides, which is represented by the following general formula (1): ##STR1## wherein R.sup.2 is a hydroxyl group, a lower alkenyloxy group, a phenyl-lower alkenyloxy group, a cycloalkenyloxy group, a tetrahydropyranyloxy group, a pyridyloxy group, or a lower alkanoyloxy group which may have carboxyl group(s).
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: July 28, 1998
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Yasuo Oshiro, Tatsuyoshi Tanaka, Takao Nishi, Keiichi Kuwahara, Shigeki Fujisawa, Keiko Takasu, Yutaka Wada