Patents by Inventor Paul G. Gilbert

Paul G. Gilbert 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).

  • Patent number: 6783804
    Abstract: A cast coated printing sheet providing high paper gloss and smoothness, desirable printing performance characteristics, and enhanced printed product attributes. The cast coated sheet comprises a substrate and a brushed coating layer comprising (a) a pigment, (b) a functionally effective amount of latex such that a dried unbrushed layer of the coating will not adhere sufficiently to the casting surface to allow the unbrushed layer to be cast, and (c) a functionally effective amount of brushing agent such that damage to the coating layer surface during brushing is minimized. The invention further provides methods for manufacturing such cast coated printing sheets.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: August 31, 2004
    Assignee: S.D. Warren Services Company
    Inventor: Paul G. Gilbert
  • Publication number: 20030209160
    Abstract: A cast coated printing sheet providing high paper gloss and smoothness, desirable printing performance characteristics, and enhanced printed product attributes. The cast coated sheet comprises a substrate and a brushed coating layer comprising (a) a pigment, (b) a functionally effective amount of latex such that a dried unbrushed layer of the coating will not adhere sufficiently to the casting surface to allow the unbrushed layer to be cast, and (c) a functionally effective amount of brushing agent such that damage to the coating layer surface during brushing is minimized. The invention further provides methods for manufacturing such cast coated printing sheets.
    Type: Application
    Filed: April 24, 2003
    Publication date: November 13, 2003
    Applicant: S.D. WARREN SERVICES COMPANY, a Delaware corporation
    Inventor: Paul G. Gilbert
  • Patent number: 6582821
    Abstract: A cast coated printing sheet providing high paper gloss and smoothness, desirable printing performance characteristics, and enhanced printed product attributes. The cast coated sheet comprises a substrate and a brushed coating layer comprising (a) a pigment, (b) a functionally effective amount of latex such that a dried unbrushed layer of the coating will not adhere sufficiently to the casting surface to allow the unbrushed layer to be cast, and (c) a functionally effective amount of brushing agent such that damage to the coating layer surface during brushing is minimized. The invention further provides methods for manufacturing such cast coated printing sheets.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: June 24, 2003
    Assignee: S. D. Warren Services Company
    Inventor: Paul G. Gilbert
  • Patent number: 4773965
    Abstract: Sulfite pulp having increased tear, Scott bond, and stretch properties and above about 90% dirt reduction without bleaching. Methods for making such sulfite pulp by increasing the consistency of conventional sulfite pulp to above about 12 percent, shearing the increased consistency pulp under compressive forces to improve the tear and stretch properties of the pulp, refining the sheared pulp at pressures above atmospheric to remove dirt particles and achieve a desired freeness level, and removing fiber knots from the refined pulp.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: September 27, 1988
    Assignee: Great Northern Paper
    Inventors: Allan J. Glinski, Paul G. Gilbert