Patents by Inventor Katsuyoshi Tsukamoto

Katsuyoshi Tsukamoto 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).

  • Pipeline structure with a lining material, an end structure of said pipeline and a method for applying a lining material to a pipeline
    Patent number: 5857494
    Abstract: A pipeline structure with a lining material wherein a hermetic outer tube is disposed at the inner surface of a pipeline, and an inner lining material is disposed at the inner surface of the outer tube, said inner lining being made of a rigid fiber-reinforced plastic wherein a thermosetting resin is reinforced by a fiber reinforcement material.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: January 12, 1999
    Assignees: Tokyo Gas Kabushiki Kaisha, Ashimori Kogyo Kabushiki Kaisha
    Inventors: Katsuyoshi Tsukamoto, Shigeru Toyoda, Sofumi Sato, Masakatsu Hyodo, Kiyoshi Uegaki, Masatoshi Ishikawa, Hitoshi Saito