Patents by Inventor Akira Mada

Akira Mada 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).

  • Local anesthetic for external use
    Patent number: 6429228
    Abstract: A local anesthetic for external use is prepared by blending a) an active ingredient selected from lidocaine, prilocaine, and pharmaceutically acceptable salts thereof; b) a percutaneous absorption accelerator, c) ethanol and/or isopropyl alcohol, and d) water, such that the blending ratio of ethanol and/or isopropyl alcohol to water is 0.5 to 1.2 by weight, and the pH is 6.0 to 8.5.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: August 6, 2002
    Assignee: Kowa Company, Ltd.
    Inventors: Toshio Inagi, Akira Mada