Patents by Inventor Shigeyoshi Hiraki

Shigeyoshi Hiraki 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).

  • Composition for a topical preparation and a process for producing the same
    Patent number: 4008321
    Abstract: A composition for a topical preparation which comprises a steroid, crotamiton, propylene glycol and a carboxyvinyl polymer in an aqueous medium, said composition having been neutralized with an organic amine, and a process for producing the same which comprises adding a mixed solution of crotamiton and propylene glycol containing a steroid to an aqueous solution of a carboxyvinyl polymer, followed by neutralizing the resultant solution with an organic amine while stirring, to give a transparent, gelatinous topical composition.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: February 15, 1977
    Assignee: Toko Yakuhin Kogyo Kabushiki Kaisha
    Inventors: Takuzo Kamishita, Shigeyoshi Hiraki