Patents by Inventor Masaaki Nagaoka

Masaaki Nagaoka 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).

  • Heat resisting and insulating light alloy articles and method of manufacture
    Patent number: 4798770
    Abstract: Light alloy articles comprising a body of light alloy having a composite fiber/light alloy layer, a sprayed heat-resistant alloy layer, and a sprayed ceramic base layer formed on the body in this sequence exhibit improved heat resistance and insulation and are very useful in the manufacture of internal combustion engine pistons. A method for producing such a coated light alloy article by spraying is also provided.
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: January 17, 1989
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tadashi Donomoto, Mototsugu Koyama, Masaaki Nagaoka
  • Exhaust system means for automobiles
    Patent number: 4113167
    Abstract: An exhaust system means for automobiles composed of a plurality of members joined together at joining portions by welding. The welded portion and a surrounding portion are covered with a protective metal layer formed by spraying a molten metal thereon.
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: September 12, 1978
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Yoshiro Komiyama, Katsumi Kondo, Mototsugu Koyama, Masaaki Nagaoka, Tsuneo Uchida