Patents by Inventor Tetsuo Ootsuki

Tetsuo Ootsuki 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).

  • Treating solution for metal surface treatment and a method for surface treatment
    Patent number: 7531051
    Abstract: The present invention is the method for surface treatment of a metal material containing iron and/or zinc, containing component (A) and component (B); where (A) is a compound containing at least one metal element selected from the group consisting of Ti, Zr, Hf and Si, (B) is a compound containing fluorine as a supplying source of HF, wherein the ratio K=A/B between the total mole weight A of metal elements of Ti, Zr, Hf and Si in the compound of component (A) and the mole weight B which when the total fluorine atoms in the fluorine-containing compound of component (B) is converted to HF is within the range of 0.06?K?0.18, and the concentration of component (A) indicated by the total mole concentration of metal elements of Ti, Zr, Hf and Si is within the region of 0.05 to 100 m mol/L. To the treating solution for surface treatment, at least one compound containing at least one metal element selected from the group consisting of Ag, Al, Cu, Fe, Mn, Mg, Ni, Co and Zn can be blended.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: May 12, 2009
    Assignees: Nihon Parkerizing Co., Ltd., Toyota Jidosha Kabushiki Kaisha, Daihatsu Motor Co., Ltd.
    Inventors: Takaomi Nakayama, Hiroyuki Sato, Tetsuo Ootsuki, Tadashi Matsushita, Eisaku Okada, Fumiya Yoshida, Katsuhiro Shiota
  • Treating solution for surface treatment of metal and surface treatment method
    Publication number: 20040244874
    Abstract: The present invention is the method for surface treatment of a metal material containing iron and/or zinc, comprising component (A) and component (B);
    Type: Application
    Filed: July 19, 2004
    Publication date: December 9, 2004
    Inventors: Takaomi Nakayama, Hiroyuki Sato, Tetsuo Ootsuki, Tadashi Matsushita, Eisaku Okada, Fumiya Yoshida, Katsuhiro Shiota