Patents by Inventor Robert W. Grich

Robert W. Grich 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).

  • Aldehyde scrubbing in crust leather and tanned leather
    Patent number: 9212402
    Abstract: The present invention provides aqueous flesh coating compositions comprising one or more aqueous acid-functional acrylic or vinyl copolymer and from 0.03 and up to 1.0 equivalent, based on equivalents of carboxylic acid in the polymer, of one or more active compound chosen from an aminoguanidine, semicarbazide, dihydrazide, guanamine, hydrazine and a salt thereof. Further, the invention provides methods of applying the coating composition to leather crust or to tanned leather, and to the flesh coated leather or coated leather crust produced thereby. The leather crust and tanned leather produced by the invention, for example fleshcoated or finished leather, will emit greatly reduced levels of aldehydes over time and especially valuable in scrubbing aldehydes from perforated leather for automotive use.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: December 15, 2015
    Assignee: Rohm and Haas Company
    Inventors: Anton G. El A'mma, Robert W. Grich, Joseph M. Hoefler, Kelley L. Klein, Jill A. Ottinger
  • Aldehyde scrubbing in crust leather and tanned leather
    Publication number: 20100068541
    Abstract: The present invention provides aqueous flesh coating compositions comprising one or more aqueous acid-functional acrylic or vinyl copolymer and from 0.03 and up to 1.0 equivalent, based on equivalents of carboxylic acid in the polymer, of one or more active compound chosen from an aminoguanidine, semicarbazide, dihydrazide, guanamine, hydrazine and a salt thereof. Further, the invention provides methods of applying the coating composition to leather crust or to tanned leather, and to the flesh coated leather or coated leather crust produced thereby. The leather crust and tanned leather produced by the invention, for example fleshcoated or finished leather, will emit greatly reduced levels of aldehydes over time and especially valuable in scrubbing aldehydes from perforated leather for automotive use.
    Type: Application
    Filed: September 11, 2009
    Publication date: March 18, 2010
    Inventors: Anton G. El A'mma, Robert W. Grich, Joseph M. Hoefler, Kelley L. Klein, Jill A. Ottinger