Patents by Inventor Trevor R. Spalding

Trevor R. Spalding 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).

  • Phosphate coating for varistor and method
    Patent number: 6214685
    Abstract: A method of providing a semiconductor device with a selectively deposited inorganic electrically insulative layer, the device having exposed semiconductor surfaces and electrically conductive metal end terminations, in which the device is saturated in a phosphoric acid solution to form a phosphate layer on the exposed surfaces of the semiconductor but not on the metal end terminations. The device is thereafter plated by a conventional plating process and the plating is provided only on the end terminations.
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: April 10, 2001
    Assignee: Littelfuse, Inc.
    Inventors: Caroline Clinton, Trevor R. Spalding, Andrew Mark Connell, John Barrett, James F. Rohan