Patents by Inventor Toshio Date

Toshio Date 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).

  • Sound absorbing and heat insulating material, and method of manufacturing same
    Patent number: 6855398
    Abstract: An object of the present invention is, by utilizing carbon fibers as its constituent material, to provide a thermal-acoustic insulation material having excellent properties in durability, compression resilience, lightness, fireproofness, and non-galvanic corrosiveness. The material of the present invention comprises a wool-like carbon fiber aggregate composed of carbon fibers having an average fiber diameter of 0.5 ?m to 5 ?m and an average fiber length of 1 mm to 15 mm and the contact points of the fibers are bonded together by a thermosetting resin. The galvanic current of the material is 10 ?A or lower in a galvanic cell comprising an electrode composed of the thermal-acoustic insulation material, the other electrode composed of an aluminum plate, and an electrolytic solution composed of 0.45 wt. % sodium chloride aqueous solution.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: February 15, 2005
    Assignee: Osaka Gas Co., Ltd.
    Inventors: Fumikazu Machino, Tsuyoshi Higo, Toshinobu Kataoka, Ryoichi Onoue, Toshio Date, Tominori Sato