Patents by Inventor William Rostoker, deceased

William Rostoker, deceased 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 and apparatus for recovering useful products from waste streams
    Patent number: 5180421
    Abstract: Waste materials containing metal oxides and/or metals and their salts are converted to useful products. The waste materials are combined in such proportions that when heated, they form a composite that becomes molten and pourable at temperatures below about 1600.degree. C. Provision is also made for converting some of the metal oxides in the molten material to free metal which is then separated from the molten material. A modified cupola can be used to generate the temperature and reducing conditions suitable for carrying out the process.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: January 19, 1993
    Assignee: Rostoker, Inc.
    Inventors: William Rostoker, deceased, Gareth Rostoker, Julius J. Bonini, Gary W. Klimczak