Patents by Inventor Ray A. Work, III

Ray A. Work, III 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).

  • Reactive media-ink system for ink jet printing
    Patent number: 5537137
    Abstract: An ink/media set is provided having improved durability. The ink contains an aqueous medium and a dye or pigment dispersion as the colorant. The media has a coating that contains a hydrophilic polymer and a reactive component. The printed media is exposed to an energy source that binds the ink to the media coating, and renders the coating more durable.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: July 16, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert P. Held, Daphne P. Fickes, Joseph E. Reardon, Ray A. Work, III
  • Reactive media-ink system for ink jet printing
    Patent number: 5429860
    Abstract: An ink/media set is provided having improved durability. The ink contains an aqueous medium and a dye or pigment dispersion as the colorant. The media has a coating that contains a hydrophilic polymer and a reactive component. The printed media is exposed to an energy source that binds the ink to the media coating, and renders the coating more durable.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: July 4, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert P. Held, Daphne P. Fickes, Joseph E. Reardon, Ray A. Work, III
  • Electrographic recording element with reduced humidity sensitivity
    Patent number: 5192613
    Abstract: Electrographic recording element with reduced humidity sensitivity comprising(1) a base, e.g., paper, polymer film,(2) a conductive layer of a continuous coating of an electroconductive composition comprising(a) polymeric binder,(b) electroconductive powder comprising amorphous silica or a silica-containing material in association with a two-dimensional network of antimony-containing tin oxide crystallites in which the antimony content ranges from 1 to about 30% by weight of tin oxide; and(3) a dielectric layer.Mixtures of two or more different sized electroconductive powder particles can be used.The electrographic recording element is useful for recording high-speed computer element, e.g., in geophysical mapping, weather map printing, architectural and engineering drawings, etc.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: March 9, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ray A. Work, III, Clifford E. Milner, Sarah J. Kintner, James E. Genthe, Stephen Strella, Charles R. Iacovella
  • Gelatin-polyester-aziridine product subbing layer for polyester photographic base
    Patent number: 4241169
    Abstract: To improve adhesion of a hydrophilic photographic emulsion to a hydrophobic polyester film base the latter is pretreated by electrical discharge, flame or chemical treatment, and then given a sub-coating composed of an aqueous dispersion of gelatin, a water-soluble polyester, and a polyfunctional aziridine crosslinking agent, and this coating is then thermally cured.
    Type: Grant
    Filed: May 21, 1979
    Date of Patent: December 23, 1980
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: Ray A. Work, III, Richard P. Pankratz
  • Subbing composition comprising treated gelatin-polyester-aziridine material for adhering photographic emulsion to polyester film base
    Patent number: 4181528
    Abstract: To improve adhesion of a hydrophilic photographic emulsion to a hydrophobic polyester film base the latter is pretreated by electrical discharge, flame or chemical treatment, and then given a sub-coating composed of an aqueous dispersion of gelatin, a water-soluble polyester, and a polyfunctional aziridine crosslinking agent, and this coating is then thermally cured.
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: January 1, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ray A. Work, III, Richard P. Pankratz