Patents by Inventor Yoshiaki Nakaniwa

Yoshiaki Nakaniwa 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 fiber-reinforced composite body
    Patent number: 4633931
    Abstract: A method of producing a fiber-reinforced composite material comprising the steps of arranging a fiber shaped article in a cavity of a casting mold; pouring a molten metal acting as a matrix into the cavity and subjecting the molten metal to primary pressure; holding the molten metal under pressure for a predetermined period of time; and subjecting the molten metal, at least in proximity of one end of the fiber shaped article, to secondary pressure with a high hydrostatic pressure after the predetermined period of time has passed, to fill the molted metal into the fiber shaped article and integrate them.
    Type: Grant
    Filed: March 14, 1984
    Date of Patent: January 6, 1987
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Fumio Yamaguchi, Yoshiaki Nakaniwa, Yoshiaki Masuda, Hisayuki Sakurai, Waichiro Nakashima