Patents by Inventor Eisuke Yamaya

Eisuke Yamaya 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).

  • Antibacterial antifungal agent and fibrous material containing the same
    Patent number: 5888526
    Abstract: The present invention is to provide a fibrous material containing an antibacterial antifungal agent consisting of specific metal salt of organic compound effective for both antibacterial and antifungal functions and various articles containing the same fibrous material. The inclusion of the antibacterial antifungal agent consisting of specific metal salt of organic compound in fibrous materials allows production of fibrous materials having extremely high antibacterial antifungal activity. Various articles containing the fibrous materials have found to exhibit excellent antibacterial antifungal effects.
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: March 30, 1999
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Yasuo Tsubai, Mitsuo Yoshida, Eisuke Yamaya
  • Rock wool composite material
    Patent number: 4448921
    Abstract: A rock wool composite material obtained by mixing a fine rock wool having a diameter of 1 to 10.mu. and a length of 70 to 500.mu. and containing substantially no shots with a pulp-like substance of a heat-resistant aromatic polymer having a freeness value of 150 seconds or more and less than 500 seconds, is excellent in heat resistance, incombustibility, heat insulation and electrical insulation and is advantageously used as a substitute for an asbestos sheet or board.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: May 15, 1984
    Assignees: Mitsubishi Paper Mills, Ltd., Nippon Aroma Co., Ltd., Nitto Boske, Ltd.
    Inventors: Eisuke Yamaya, Osamu Yamamoto, Takashi Koike, Shunji Seino