Patents by Inventor Randolph W. Spratt

Randolph W. Spratt 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).

  • Highly viscous coating material for porous substrates
    Patent number: 7037973
    Abstract: A coating composition for application on a porous substrate for use with a roller printing application. The coating composition comprises an ethoxylated polyethyleneimine polymer, a pH modifier, a thickening additive, an ammonium sulfate, a surfactant, and water. Optional additives can comprise a biocide, a lower aliphatic alcohol and a UV fluorescent dye. When the coating composition is applied to the porous substrate, waterfast prints are produced which are resistant to smudging or bleeding when subjected to moisture. The coating composition can be applied to the porous substrate as a pre-print coating or a post-print coating.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: May 2, 2006
    Assignee: Eastman Kodak Company
    Inventors: Raouf Botros, Randolph W. Spratt
  • Highly viscous coating material for porous substrates
    Publication number: 20030018101
    Abstract: A coating composition for application on a porous substrate for use with a roller printing application. The coating composition comprises an ethoxylated polyethyleneimine polymer, a pH modifier, a thickening additive, an ammonium sulfate, a surfactant, and water. Optional additives can comprise a biocide, a lower aliphatic alcohol and a UV fluorescent dye. When the coating composition is applied to the porous substrate, waterfast prints are produced which are resistant to smudging or bleeding when subjected to moisture. The coating composition can be applied to the porous substrate as a pre-print coating or a post-print coating.
    Type: Application
    Filed: June 27, 2001
    Publication date: January 23, 2003
    Applicant: Scitex Digital Printing, Inc.
    Inventors: Raouf Botros, Randolph W. Spratt