Patents by Inventor Claraence D. Vanderpool

Claraence D. Vanderpool 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).

  • Reclamation of tungsten values from tungsten-thoria
    Patent number: 5819158
    Abstract: A simple, cost effective method for reclaiming tungsten values from tungsten-thoria has been invented. The method involves reacting the tungsten-thoria with molten sodium hydroxide to form a soluble sodium tungstate and an insoluble residue of thoria, cooling the melt, dissolving the melt in water, and filtering to separate the insoluble residue of thoria from the dissolved sodium tungstate. The method resulting in substantially all of the tungsten values being reclaimed as sodium tungstate and acutely reducing the amount of radioactive material for disposal.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: October 6, 1998
    Assignee: Osram Sylvania Inc.
    Inventors: Claraence D. Vanderpool, Thomas A. Wolfe, Michael J. Miller