Patents by Inventor Yukiya Nakazato

Yukiya Nakazato 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).

  • Method for metal-plating resin molded articles and metal-plated resin molded articles
    Patent number: 5230927
    Abstract: A process for metal plating a resin molded article molded from a resin composition containing as main components, a polyphenylene sulfide resin and a glass-reinforcing agent, which comprises, before the metal plating,(1) treating the resin molded article by immersion in a mixed liquid of nitric acid and a fluoride salt or in a mixed liquid of nitric acid and hydrofluoric acid (A treatment), thentreating the resulting resin molded article by immersion in an organic polar solvent-containing liquid (B treatment), and further, if necessary,treating the resulting resin molded article by immersion in an aqueous floride salt or hydrofluoric acid solution (C treatment).
    Type: Grant
    Filed: July 31, 1991
    Date of Patent: July 27, 1993
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Chiharu Nishizawa, Takahiro Seki, Michio Oba, Yukiya Nakazato
  • Process for preparing hydroperoxide
    Patent number: 4013725
    Abstract: A process for preparing hydroperoxide by autoxidizing secondary alkyl group-substituted methylbenzenes in the presence of water comprises using as a catalyst a water-soluble chelate compound in which multidentate ligands are coordinated to at least one member selected from the class of cobalt, nickel, manganese, copper and iron.
    Type: Grant
    Filed: May 6, 1975
    Date of Patent: March 22, 1977
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Eiichi Yonemitsu, Takeo Igarashi, Naoto Osaki, Tetsuo Aoyama, Yukiya Nakazato