Patents by Inventor Colin A. Whitton

Colin A. Whitton 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 removing coatings from metal substrates prone to corrosion or deterioration
    Patent number: 5290365
    Abstract: The invention relates to a method for removing coatings, in particular, organic coatings from metal substrates which are easily corroded or discoloured: aluminimum, aluminium alloy, zinc or zinc alloy.Previously known compositions for this purpose were based on methylene chloride which is environmentally undesirable. In contrast, this invention uses a composition which comprises strong alkali, a polyhydric alcohol or ether derivative thereof and a pyrollidone and/or a lactone. The preferred pyrollidone is N-methyl pyrollidone.
    Type: Grant
    Filed: July 24, 1992
    Date of Patent: March 1, 1994
    Assignee: Brent Chemicals International PLC
    Inventor: Colin A. Whitton