Patents by Inventor Walter P. Drosjack

Walter P. Drosjack 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).

  • Treatment of radioactive wastes
    Patent number: 5288435
    Abstract: Method and apparatus for the incineration and vitrification of radioactive waste materials. Waste materials are fed into a melter containing molten glass wherein the waste is incinerated and vitrified into the glass matrix. Gases produced are combusted in an extended plenum area preferably designed to provide a residence time of at least 3 seconds. A portion of the sulfur compounds in the combustion gases are incorporated into a solid matrix of gypsum by contacting the sulfur compounds with an aqueous solution and calcium hydroxide.
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: February 22, 1994
    Assignee: Westinghouse Electric Corp.
    Inventors: John D. Sachse, Larry R. Eisenstatt, Walter P. Drosjack, David H. Weigle, C. Patrick Keegan