Patents by Inventor Haruo Kurishima

Haruo Kurishima 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).

  • Solution and process for cold forming titanium
    Patent number: 4728373
    Abstract: An improved solution and process for preparing an article of titanium or titanium alloy for cold forming reduces the peeling of the applied lubricant film. The aqueous solution contains an organic chelating compound, an aqueous organic macromolecular compound and/or a surfactant in an aqueous acidic (pH 1.5-4.5) solution of a fluoride and a soluble compound of magnesium, calcium, manganese, iron, cobalt, nickel, zinc, and/or molybdenum.
    Type: Grant
    Filed: August 20, 1986
    Date of Patent: March 1, 1988
    Assignee: Nihon Parkerizing Co., Ltd.
    Inventors: Hiroyoshi Nakagawa, Eiichi Nishi, Haruo Kurishima