Patents by Inventor Yukio Fukuyama

Yukio Fukuyama 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).

  • Method of producing vapor growth carbon fibers
    Patent number: 5102647
    Abstract: A method of producing vapor growth carbon fibers which are grown in a rection space by thermally decomposing gaseous hydrocarbon and by using transition metal fine particles as the catalyst, wherein the reaction space is filled with ceramic granules which serve as a radiation heat transfer medium and are moved to prevent an intermingling of the growing carbon fibers, so that the grown carbon fibers are conveyed from the reaction space by a gas stream.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: April 7, 1992
    Assignee: Showa Denko K.K.
    Inventors: Hirokazu Yamada, Yukio Fukuyama