Patents by Inventor Robert Q. Cooper

Robert Q. Cooper 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).

  • Compositions and methods for removing sealant compositions
    Patent number: 4540442
    Abstract: Aqueous compositions containing as essential ingredients; an alkanolamine, an aliphatic carboxylic acid containing 5 to 18 carbon atoms, and an arylenetriazole have been found effective in removing resin-containing sealants from the surfaces of zinc containing metals, such as galvanized steel, without causing changes in the surfaces of the metal, so that phosphate coatings which are subsequently applied to said surfaces are neither streaky nor spotty.
    Type: Grant
    Filed: February 16, 1984
    Date of Patent: September 10, 1985
    Assignee: Amchem Products, Inc.
    Inventors: Timothy J. C. Smith, Jurgen Geke, Robert Q. Cooper