Patents by Inventor Sandra K. Seigle

Sandra K. Seigle 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).

  • Patent number: 4780150
    Abstract: Corrosion inhibiting compositions for addition to aqueous acid metal cleaning compositions for use in the cleaning of surfaces of metal parts which are contaminated with water insoluble, acid soluble deposits, wherein the corrosion inhibiting composition contains a partially hydrolyzed protein which is either a partially hydrolyzed gelatin, a partially hydrolyzed casein or a mixture thereof wherein the partially hydrolyzed protein has a total nitrogen content of from about 10 to about 20% by weight and a free amino group nitrogen content of from about 4 to about 30% based on the total nitrogen content. The invention also relates to aqueous acid solutions containing the corrosion inhibitor of the invention and to processes for treating contaminated metal parts with such acid compositions.
    Type: Grant
    Filed: March 2, 1987
    Date of Patent: October 25, 1988
    Assignee: Amchem Products, Inc.
    Inventors: James D. Anderson, Sandra K. Seigle
  • Patent number: 4541945
    Abstract: Acid cleaning compositions containing an inhibitor for cleaning metal surfaces, processes for cleaning metal surfaces therewith, and concentrates useful in forming the acid cleaning compositions. The present acid cleaning compositions contain an acid, a Mannich base, a thiourea, an alkyl trimethyl ammonium halide and/or an alkyl (C.sub.8 -C.sub.9) phenoxypolyethoxy ethanol, and a nonionic surfactant which is a condensate of poly(oxyethylene) and poly(oxypropylene) groups.
    Type: Grant
    Filed: September 23, 1983
    Date of Patent: September 17, 1985
    Assignee: Amchem Products
    Inventors: James D. Anderson, Sandra K. Seigle