Patents by Inventor Hirotaka Endoh

Hirotaka Endoh 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).

  • Slow-release sodium valproate tablets
    Patent number: 5589191
    Abstract: A slow, release sodium valproate tablet with a coating layer, obtained by coating a core containing sodium valproate with a coating agent comprising ethyl cellulose having silicic acid anhydride dispersed therein. The slow-release tablets, while having a relatively small size, maintain a stable dissolution rate without being influenced by pH conditions to stably maintain the blood concentration of active agent over an extended period of time.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 31, 1996
    Assignee: Nikken Chemicals Co., Ltd.
    Inventors: Tadashi Ukigaya, Hirotaka Endoh
  • Spring loaded flywheel cleaning apparatus for a pick up lens of a compact disc player
    Patent number: 5084853
    Abstract: A cleaning apparatus for a pick-up lens of a compact disc player using a front loading base in which a flywheel is fixed to the axle of the cleaning brush. The flywheel is placed in rotation by the release of a compressed spring.
    Type: Grant
    Filed: February 21, 1990
    Date of Patent: January 28, 1992
    Assignee: Kyowa Sonic Co., Ltd.
    Inventor: Hirotaka Endoh