Patents by Inventor Douglas D. Fekete

Douglas D. Fekete 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 for cleaning tin surfaces
    Patent number: 4094701
    Abstract: An aqueous alkaline solution containing an organic tannin is used to clean a tin surface. The composition is particularly useful for cleaning tin surfaces because the presence of the tannin inhibits etching of the tin surface which normally occurs under alkaline conditions.
    Type: Grant
    Filed: March 18, 1976
    Date of Patent: June 13, 1978
    Assignee: Oxy Metal Industries Corporation
    Inventor: Douglas D. Fekete
  • Low temperature aluminum cleaning composition and process
    Patent number: 3969135
    Abstract: Aluminum surfaces are cleaned at low temperature by the addition of a polyalkylene glycol-abietic acid surfactant and a polyalkylene glycol-hydrocarbon surfactant to an aqueous acidic solution. Preferably, the solution contains fluoride as an accelerator.
    Type: Grant
    Filed: February 13, 1975
    Date of Patent: July 13, 1976
    Assignee: Oxy Metal Industries Corporation
    Inventors: Peter F. King, Douglas D. Fekete