Patents by Inventor Yukihiko Ayano

Yukihiko Ayano 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).

  • Surface processing solution and surface treatment of aluminum or aluminum alloy substrate
    Patent number: 4187127
    Abstract: A surface processing solution for an aluminum or aluminum alloy substrate comprises 0.1 to 10 g/liter of one or more compounds selected from the group consisting of inositol di-.about.hexaphosphates and water soluble salts thereof and 0.1 to 10 g/liter as Ti of a titanium fluoride.A surface of an aluminum or aluminum alloy substrate is treated with said surface processing solution.
    Type: Grant
    Filed: November 21, 1978
    Date of Patent: February 5, 1980
    Assignee: Nihon Parkerizing Co., Ltd.
    Inventors: Kuniji Yashiro, Yukihiko Ayano, Yasushi Miyazaki
  • Acidic zinc phosphate solution and method
    Patent number: 4153479
    Abstract: An aqueous acidic oxidant-free zinc phosphate solution contains tartaric acid, citric acid and/or a salt of either. At a pH of about 3.5 to 4.7, the solution produces a microcrystalline coating of zinc phosphate on iron or steel. The solution preferably contains nickel ion also.
    Type: Grant
    Filed: September 30, 1977
    Date of Patent: May 8, 1979
    Assignee: Oxy Metal Industries Corporation
    Inventors: Yukihiko Ayano, Kuniji Yashiro, Akira Niizuma