Patents by Inventor Gerson E. Beauchamp

Gerson E. Beauchamp 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).

  • Electrographic coatings containing acrylamide copolymers
    Patent number: 4450203
    Abstract: Electrically conductive paper is coated with an insulating coating comprising an organic solvent-soluble solution copolymer of monoethylenically unsaturated monomers comprising from about 1% to about 8% of copolymerized acrylamide or a monoethylenic derivative thereof in combination with from 4% to 10% of copolymerized monoethylenically unsaturated carboxylic acid including from 1/4th to 3/4ths of methacrylic acid based on total carboxylic acid monomer.
    Type: Grant
    Filed: October 4, 1982
    Date of Patent: May 22, 1984
    Assignee: DeSoto, Inc.
    Inventors: Frank J. Ragas, Ralph L. Minnis, Gerson E. Beauchamp
  • Electrographic coating containing aqueous emulsion copolymerized acrylamide copolymers
    Patent number: 4400441
    Abstract: Electrically conductive paper is coated with an insulating coating which is an aqueous latex of an aqueous emulsion copolymer of monoethylenically unsaturated monomers comprising from 5% to 40% of copolymerized acrylamide or a monoethylenic derivative thereof, preferably isobutoxymethyl acrylamide. A proportion of monoethylenically unsaturated carboxylic acid is preferably included in the copolymer.
    Type: Grant
    Filed: July 23, 1981
    Date of Patent: August 23, 1983
    Assignee: DeSoto, Inc.
    Inventors: Ralph L. Minnis, Frank J. Ragas, Gerson E. Beauchamp
  • Electrographic coatings containing acrylamide copolymers
    Patent number: 4339505
    Abstract: Electrically conductive paper is coated with an insulating coating to provide improved electrographic properties using a solvent-soluble copolymer comprising from 5% to 40% of copolymerized acrylamide or a monoethylenic derivative thereof. The coating is preferably pigmented with calcium carbonate, and the presence of the copolymerized acrylamide allows an increase in the pigment to binder ratio into the range of from 2:1 to 6:1.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: July 13, 1982
    Assignee: DeSoto, Inc.
    Inventors: Frank J. Ragas, Ralph L. Minnis, Gerson E. Beauchamp
  • Calcium oxide or hydroxide to improve the charge acceptance of electrographic dielectric resins
    Patent number: 4204971
    Abstract: The charge accepting capacity of electrographic dielectric coatings is improved by dispersing in an organic solvent-soluble thermoplastic insulating resin having carboxyl functionality providing an acid value of from 5-100, from 0.05-3% by weight of calcium oxide or calcium hydroxide.
    Type: Grant
    Filed: October 25, 1978
    Date of Patent: May 27, 1980
    Assignee: DeSoto, Inc.
    Inventor: Gerson E. Beauchamp
  • Calcium oxide or hydroxide to improve the charge acceptance of electrographic dielectric resins
    Patent number: 4145478
    Abstract: The charge accepting capacity of electrographic dielectric coatings is improved by dispersing in an organic solvent-soluble thermoplastic insulating resin having carboxyl functionality providing an acid value of from 5-100, from 0.05-3% by weight of calcium oxide or calcium hydroxide.
    Type: Grant
    Filed: July 28, 1977
    Date of Patent: March 20, 1979
    Assignee: DeSoto, Inc.
    Inventor: Gerson E. Beauchamp