Patents by Inventor Hironori Maikuma

Hironori Maikuma 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 producing a bicycle frame made of fiber-reinforced plastics
    Patent number: 5122210
    Abstract: A process for producing a bicycle frame of a fiber-reinforced plastics (FRP) including the steps of: forming parts of a bicycle frame such as an upper pipe, a lower pipe, a vertical pipe, a chain stay and a rear fork, or a combination thereof, with an FRP; arranging the bicycle frame parts in a structure of the bicycle frame; forming, with an FRP, lug portions onto the arranged bicycle frame parts at a required position whereat the bicycle frame parts are to be connected and fixed to each other; and curing all of the lug portions at one time, to thereby simultaneously accomplish an assembling of the bicycle frame.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: June 16, 1992
    Assignees: Nippon Steel Corporation, Nippon Steel Chemical Co., Ltd.
    Inventors: Kenji Kubomura, Hironori Maikuma, Nobuyuki Tsuji, Hiromi Kimura, Toshikazu Takeda