Patents by Inventor Tamiki Koyama

Tamiki Koyama 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 placing concrete into a steel encasement
    Patent number: 4759663
    Abstract: A method of placing concrete into a steel encasement constructing an offshore structure. The steel encasement is erected. A plurality of first concrete injection holes are formed through the steel encasement in a heightwise spaced manner. The concrete is injected through the lowest disposed concrete injection hole into the erected steel encasement to a level below another concrete injection hole disposed just above said lowest disposed concrete injection hole. Then, the injection step is repeated in connection with a subsequent first concrete injection hole nearest to the level, to which the concrete has been placed, for placing the concrete into the steel encasement to a predetermined level.
    Type: Grant
    Filed: November 19, 1986
    Date of Patent: July 26, 1988
    Assignees: Nippon Kokan K.K., Shimizu Construction Co., Ltd.
    Inventors: Hideo Watanabe, Tomoo Suzuki, Takayoshi Ota, Gaku Matsumoto, Tomohiro Bessho, Tamiki Koyama, Katuhiko Kimura, Yasuo Kajioka, Minoru Imai