Patents by Inventor Taro Yamahata

Taro Yamahata 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).

  • Steroid-containing cataplasms and process for producing the same
    Patent number: 6432431
    Abstract: A steroid-containing gel patch containing a steroid as an effective ingredient at 0.005 to 0.05% by weight, crotamiton as a stabilizer at 15% by weight or less and a surfactant in a base, where the amount of the crotamiton blended being 200 to 3000-fold the weight of the steroid blended and the amount of the surfactant blended being {fraction (1/20)} to ⅕-fold the weight of the crotamiton blended.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: August 13, 2002
    Assignee: Hisamitsu Pharmaceutical Co., Inc.
    Inventors: Kazunori Muta, Seiichiro Tsuru, Taro Yamahata