Patents by Inventor Shigeo Oouchi

Shigeo Oouchi 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).

  • Patent number: 4058439
    Abstract: A nickel electroplating emulsion bath for obtaining a satin-finish which comprises an aqueous acidic continuous phase nickel salt solution, an alcohol soluble polyamide resin dispersed therein and a polishing agent and the method for using the bath. The polyamide resin is a member selected from the group consisting of a copolymer of dimer acid and an aliphatic amine, a copolymerized nylon and a modified nylon. The electroplating bath preferably also contains a cationic surface active agent selected from the group consisting of an aliphatic and/or aromatic quaternary ammonium salt and an aliphatic and/or aromatic fluorosulfonylamine quaternary ammonium salt. The use of the electroplating bath provides a means for obtaining a uniform satin-finish nickel plate surface on the material plated.
    Type: Grant
    Filed: July 16, 1976
    Date of Patent: November 15, 1977
    Assignee: Sony Corporation
    Inventors: Toshio Tamura, Shigeo Oouchi, Kenji Oosawa, Shimetomo Fueki