Patents by Inventor Richard H. Biddulph

Richard H. Biddulph 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).

  • Method of treating refractory boride shapes
    Patent number: 4543227
    Abstract: Hot pressed refractory boride shapes are treated with molten alkali metal hydroxide such as by immersion in a bath of the molten hydroxide. The treatment cleans and removes residual carbon from the surface layer of the shapes.
    Type: Grant
    Filed: March 22, 1984
    Date of Patent: September 24, 1985
    Assignee: United States Borax & Chemical Corporation
    Inventor: Richard H. Biddulph