Patents by Inventor Frederick D. Thompson

Frederick D. Thompson 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).

  • Cleaner/rinse dispensing device for carpet cleaning mechanism
    Patent number: 6016973
    Abstract: A system for dispensing an alkaline liquid cleaner solution and an acidic liquid rinse solution via a rotating head on a carpet cleaning machine, wherein the flow of the liquid cleaner solution and the liquid rinse solution are metered such that the rinse solution neutralizes the alkaline cleaner solution and leaves the carpet chemically neutral and residue-free.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: January 25, 2000
    Assignee: Carpet Co-op of America Association
    Inventors: Frederick D. Thompson, Steven R. Brandt, Eric K. Jacobson