Patents by Inventor Karl Stuart Willson

Karl Stuart Willson 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).

  • Microcracked chromium from a bath using an organic sulfur compound
    Patent number: 3943040
    Abstract: This invention covers the use of a selected group of sulfo-organic compounds as addition agents and particularly as microcracking agents in the electrodeposition of chromium from a conventional chromium plating bath. A particularly effective compound is thio diethanol, which when added to a fluosilicate bath gives a fine microcracked deposit in 21/2 and 6 minutes. At shorter plating times, this compound improves the covering power of the bath.
    Type: Grant
    Filed: September 20, 1974
    Date of Patent: March 9, 1976
    Assignee: The Harshaw Chemical Company
    Inventor: Karl Stuart Willson