Patents by Inventor Rumiko Susuki

Rumiko Susuki 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).

  • Electroless nickel plating solution and method
    Patent number: 5910340
    Abstract: To an electroless nickel plating solution comprising a water-soluble nickel salt, a reducing agent, and a complexing agent is added a polythionate or dithionite. The invention also provides a high-build electroless gold plating method comprising the steps of immersing a workpiece in the electroless nickel plating bath, thereby chemically depositing a nickel coating on the workpiece, and immersing the nickel-plated workpiece in an electroless gold plating bath, thereby chemically depositing a gold coating on the workpiece.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: June 8, 1999
    Assignee: C. Uyemura & Co., Ltd.
    Inventors: Hiroki Uchida, Masayuki Kiso, Takayuki Nakamura, Tohru Kamitamari, Rumiko Susuki, Koichiro Shimizu