Patents by Inventor Shigemitsu Osawa

Shigemitsu Osawa 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).

  • Whitening embellisher
    Patent number: 5560907
    Abstract: A whitening embellisher includes, as an active ingredient, teprenone (chemical name: geranylgeranyl-acetone). A whitening and beautifying composition includes teprenone and one or more substances selected from kojic acid, L-ascorbic acid and the like.The whitening embellisher, and whitening and beautifying composition prevent the skin from pigmenting and darkening due to sunburn and/or aging, and quicken fading, and hence make spots and freckles inconspicuous when the preparations are used for external application as a cream or milky lotion.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: October 1, 1996
    Assignee: Eisai Co., Ltd.
    Inventors: Itaru Sakai, Kana Satoh, Tomohide Tanaka, Yutaka Morita, Takashi Hibi, Yoshio Tanabe, Shigemitsu Osawa, Yasushi Tomita
  • Whitening embellisher
    Patent number: 5427775
    Abstract: A whitening embellisher includes, as an active ingredient, teprenone (chemical name: geranylgeranylacetone). A whitening and beautifying composition includes teprenone and one or more substances selected from kojic acid, L-ascorbic acid and the like. The whitening embellisher, and whitening and beautifying composition prevent the skin from pigmenting and darkening due to sunburn and/or aging, and quicken fading, and hence make spots and freckles inconspicuous when the preparations are used for external application as a cream or milky lotion.
    Type: Grant
    Filed: March 17, 1993
    Date of Patent: June 27, 1995
    Assignee: Eisai Co., Ltd.
    Inventors: Itaru Sakai, Kana Satoh, Tomohide Tanaka, Yutaka Morita, Takashi Hibi, Yoshio Tanabe, Shigemitsu Osawa, Yasushi Tomita
  • Pharmaceutical preparation for percutaneous administration containing bunazosin or its salt
    Patent number: 5041437
    Abstract: A pharmaceutical composition comprises (a) a pharmacologically effective amount of bunazosin or a pharmacologically acceptable salt thereof and (b) a monoglyceride of a fatty acid having 8 to 12 carbon atoms and/or a lactic acid ester of an aliphatic alcohol having 12 to 18 carbon atoms and is improved in percutaneous administration.
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: August 20, 1991
    Assignees: Eisai Co., Ltd., Sansho Co., Ltd.
    Inventors: Mitsuhiro Yoshida, Hiroyuki Fujimori, Hidenori Asakawa, Masayoshi Kasai, Masanori Kayano, Shigemitsu Osawa