Patents by Inventor Charles D. Falk

Charles D. Falk 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).

  • Composition to encapsulate chromium, arsenic and other toxic metals in wastes
    Patent number: 5130051
    Abstract: A composition for treating toxic metals in solid waste, sludge or slurry is provided. The composition includes a reducing agent such as ferrous sulfate or sodium sulfite and a fixative containing solid calcium oxide or solid magnesium oxide. The composition may also include an acid such as sulfuric acid.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: July 14, 1992
    Assignee: Safe-Waste Systems, Inc.
    Inventor: Charles D. Falk
  • Composition to encapsulate toxic metal and/or organic pollutants from wastes
    Patent number: 4687373
    Abstract: A coating composition for treating solid wastes is described and includes an aqueous silicate solution containing potassium oxide and silicon dioxide, a catalytic amount of an aqueous sodium borate solution and a fixative containing solid calcium oxide. A fumed silica may be added to either the aqueous silicate solution or sodium borate solution.
    Type: Grant
    Filed: August 29, 1986
    Date of Patent: August 18, 1987
    Assignee: Lopat Industries, Inc.
    Inventors: Charles D. Falk, Lincoln R. Davis