Patents by Inventor Kyoko Tsunoda

Kyoko Tsunoda 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).

  • Tin-indium alloy electroplating solution
    Patent number: 6331240
    Abstract: A tin/indium alloy plating solution not containing any cyanide and serving as a substitute for tin/lead alloy plating is provided. The tin/indium alloy plating solution is a weakly alkaline aqueous solution for tin/indium alloy electroplating, prepared by adding, as metal salts, a tetravalent tin salt of metastannic acid and a trivalent indium salt of an organosulfonic acid, further adding a chelating agent, and adjusting the pH of the aqueous solution to a value of 7 to 11 with a caustic alkali.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: December 18, 2001
    Inventors: Kyoko Tsunoda, Takaaki Tamura