Patents by Inventor Teruaki Kitago

Teruaki Kitago 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 the production of carbon fiber paper
    Patent number: 3998689
    Abstract: A carbon fiber paper is obtained from a mixture of carbon fibers, pulp, organic fibers having a carbon yield of not less than 20% and a paper sheet binder in relative amounts such that the ratio of the carbon fibers to the pulp falls in the range of 40 - 90% by weight of carbon fibers to 60 - 10% by weight of pulp, the ratio of the organic fibers to the combined weight of said carbon fibers and pulp falls in the range of from 5 to 20% by weight and the ratio of the paper sheet binder to the combined weight of said carbon fibers, pulp and organic fibers falls in the range of from 5 to 50% by weight. The resultant mixture is shaped into the form of sheet to produce a mixed paper sheet, impregnated with an organic high molecular substance and baked to carbonize at a temperature of not less than 800.degree. C in an atmosphere of an inert gas.
    Type: Grant
    Filed: July 3, 1974
    Date of Patent: December 21, 1976
    Assignees: Kureha Kagaku Kogyo Kabushiki Kaisha, Toyo Boseki Kabushiki Kaisha
    Inventors: Teruaki Kitago, Tadaaki Yoshida