Patents by Inventor Bill Davidson

Bill Davidson 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).

  • Central sprue for investment casting
    Patent number: 8225841
    Abstract: A sprue for use in investment casting may comprise a pin and a shell enclosing a part of the pin. A method for creating a sprue may comprise partially enclosing a pin in a shell.
    Type: Grant
    Filed: January 3, 2011
    Date of Patent: July 24, 2012
    Assignee: James Avery Craftsman, Inc.
    Inventor: Bill Davidson
  • CENTRAL SPRUE FOR INVESTMENT CASTING
    Publication number: 20120168109
    Abstract: A sprue for use in investment casting may comprise a pin and a shell enclosing a part of the pin. A method for creating a sprue may comprise partially enclosing a pin in a shell.
    Type: Application
    Filed: January 3, 2011
    Publication date: July 5, 2012
    Inventor: BILL DAVIDSON