Patents by Inventor Walter T. Matson

Walter T. Matson 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).

  • Electroplating bath and method
    Patent number: 4436595
    Abstract: There is provided an improved gold alloy electroplating bath comprising glycolic acid, an alkali metal salt of glycolic acid, gold and an alloying metal plus a chelating agent capable of forming a stable complex with metal impurities, particularly nickel. The chelating agent, the complexes formed and the decomposition products of the chelating agent are substantially innocuous to the functioning of the bath and to the quality of a deposit from the bath. Nitrilotriacetic acid is the preferred chelating agent.
    Type: Grant
    Filed: March 17, 1982
    Date of Patent: March 13, 1984
    Assignee: Metal Surfaces, Inc.
    Inventor: Walter T. Matson