Patents by Inventor Kunizou Imanishi

Kunizou Imanishi 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).

  • Iron-base sintered alloy for valve seat
    Patent number: 4035159
    Abstract: Iron-base sintered alloy for the valve seats of internal combustion engines is an iron-base alloy powder containing, by weight, 6 - 20% chromium less than 2.0% nickel, and carbon 0.2 - 1.5%, together with at least one additive selected from among 0.3 - 1.5% manganese, 0.2 - 1.5% sulfur, 0.5 - 8% molybdenum, and 0.5 - 2.5% silicon, and molded to a sintered density of 6.2 - 6.8 g/cm.sup.3.
    Type: Grant
    Filed: March 3, 1976
    Date of Patent: July 12, 1977
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Kametaro Hashimoto, Kenji Ushitani, Youichi Serino, Tetsuya Suganuma, Seishu Mitani, Kunizou Imanishi