Patents by Inventor Kazunori Takuma

Kazunori Takuma 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).

  • Aqueous preparation of 9-methyl-3-(1H-tetrazol-5-yl)-4H-pyrido[1,2-a])pyrimidin-4-one potassium salt
    Patent number: 4977157
    Abstract: An aqueous preparation for the treatment of allergic diseases comprising 9-methyl-3-(1H-tetrazol-5-yl)-4H-pyrido[1,2-a]pyrimidin-4-one potassium salt, dibasic potassium phosphate and monobasic potassium phosphate. The aqueous preparation has no local irritation yet has physicochemical stability during long-term storage.
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: December 11, 1990
    Assignee: Tokyo Tanabe Company, Ltd.
    Inventors: Takashi Yazaki, Kazunori Takuma