Patents by Inventor John E. Wildey

John E. Wildey 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).

  • Sulfite treatment of spent industrial wastes
    Patent number: 6680039
    Abstract: A method of treating metal-contaminated spent foundry sand, or other industrial waste, by combining the sand with a sulfite to produce insoluble metal sulfur oxide complexes that do not leach from the sand. The treated waste may also be processed to reducing “clumping,” thereby rendering the treated waste appropriate for use in another industrial process.
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: January 20, 2004
    Inventors: Edward Carroll Hale, III, John E. Wildey
  • Sulfite treatment of spent industrial wastes
    Publication number: 20030065238
    Abstract: A method of treating metal-contaminated spent foundry sand, or other industrial waste, by combining the sand with a sulfite to produce insoluble metal sulfur oxide complexes that do not leach from the sand. The treated waste may also be processed to reducing “clumping,” thereby rendering the treated waste appropriate for use in another industrial process.
    Type: Application
    Filed: November 5, 2002
    Publication date: April 3, 2003
    Inventors: Edward Carroll Hale, John E. Wildey
  • Sulfite treatment of spent industrial wastes
    Patent number: 6476287
    Abstract: A method of treating metal-contaminated spent foundry sand, or other industrial waste, by combining the sand with a sulfite to produce insoluble metal sulfur oxide complexes that do not leach from the sand. The treated waste may also be processed to reduce “clumping,” thereby rendering the treated waste appropriate for use in another industrial process.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: November 5, 2002
    Inventors: Edward Carroll Hale, III, John E. Wildey