Patents by Inventor Yoshihisa Uchiyama

Yoshihisa Uchiyama 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).

  • Process for production of precursor of alumina fiber
    Patent number: 4348341
    Abstract: Disclosed herein is a process for the production of the precursor of alumina fiber. The process comprises causing a thick solution for alumina fiber having a viscosity in the range of from 500 to 2000 cps to be continuously fed through the feed pipe protruding into the opening at the center of a funnel-shaped disk and to be sent flying with hot compressed air and thereby converting the thick solution into fibers.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: September 7, 1982
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Takeshi Furuya, Yoshihisa Uchiyama, Akinori Kouda