Patents by Inventor Glynn A. Hamilton

Glynn A. Hamilton 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).

  • Brightening color dyed wastepaper with a bleaching agent and a quaternary compound
    Patent number: 5580422
    Abstract: A method for brightening fiber from colored waste paper comprising bleaching pulp from colored waste paper with sodium hydrosulfite, formamidine sulfinic acid, or hydrogen peroxide in the presence of a selected quaternary compound.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: December 3, 1996
    Assignee: Hoechst Celanese Corporation
    Inventors: Glynn A. Hamilton, Paul W. Shepperd, III
  • Enhanced decolorization of waste paper with selected amines
    Patent number: 5560805
    Abstract: A method for bleaching pulp containing pulp from color dyed waste paper, wherein the method comprises bleaching the pulp with a bleaching chemical, especially sodium hydrosulfite, in the presence of a selected ethoxylated amine.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: October 1, 1996
    Assignee: Hoechst Celanese Corporation
    Inventors: Glynn A. Hamilton, Paul W. Shepperd, III