Patents by Inventor Shigeo Hattri

Shigeo Hattri 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).

  • Shape memory alloy pipe coupling and underwater pipes
    Patent number: 5687995
    Abstract: A shape memory alloy pipe coupling in the present invention for joining two pipes, the pipe coupling comprising a tube of a shape memory alloy, and a cover of stainless steel having a sufficient thickness and having high corrosion resistance for covering the tube. The shape memory alloy is enclosed by the cover of high corrosion-resistant stainless steel, by which high-temperature water can be prevented from making the shape memory alloy brittle and from corroding and damaging the shape memory alloy particularly through galvanic corrosion even in the case where such high-temperature water exists in the inside or outside of the pipes.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: November 18, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Takanobu Mori, Yasuo Kondo, Hiroshi Satoh, Shigeo Hattri, Takahiko Kato, Yoshimi Yanai