Patents by Inventor Yasuhira Takeshi

Yasuhira Takeshi 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).

  • Tendon of TLP and electrical corrosion protecting method of the same
    Patent number: 4614461
    Abstract: The tendons of a tension leg platform (TLP) used for producing petroleum offshore at a depth of 400-1000 m are protected against fatigue corrosion which mainly determines the life of the tendons.The straight steel pipes (1) have an insulative, corrosion-protection coating (8) having good damage resistance. The screw couplings (2) have a sprayed aluminum layer (9) having the ends contiguous to the ends of the insulative, corrosion-protection, and a galvanic current anode (5) is electrically connected to the screw coupling (2).
    Type: Grant
    Filed: September 5, 1985
    Date of Patent: September 30, 1986
    Assignee: Nippon Steel Corporation
    Inventors: Yasuyuki Taniguchi, Kotaro Yoshida, Yasuhira Takeshi, Teruo Michishita, Michio Kawai, Makoto Kawakami