Patents by Inventor Jun Ohkijima

Jun Ohkijima 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 manufacture of metal composite material including intermetallic compounds with no micropores
    Patent number: 5236032
    Abstract: A metal matrix composite material having uniformly dispersed intermetallic compounds and no micropores is manufactured by forming a porous preform including 60% to 80% by volume fine fragments essentially made of aluminum, 1% to 10% by volume fine fragments essentially made of nickel, copper or both, and 1% to 10% by volume fine fragments essentially made of titanium so that these fine fragments occupy in total 62% to 95% by volume of said preform, and at least a part of the preform is contacted with a melt of a matrix metal selected from aluminum, aluminum alloy, magnesium and magnesium alloy, so that the porous preform is infiltrated with the melt under no substantial application of pressure to the melt.
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: August 17, 1993
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tetsuya Nukami, Tetsuya Suganuma, Atsuo Tanaka, Jun Ohkijima, Yoshiaki Kajikawa, Masahiro Kubo