Patents by Inventor Jozef Boeykens

Jozef Boeykens 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).

  • Adhesive layer for polyester film
    Patent number: 6461802
    Abstract: The coating quality of an adhesive layer applied in direct contact on a polyester film is improved by using an alkyl (poly)glycoside as surfactant. A polyester film carrying such layer is suitable as support for a photosensitive material.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: October 8, 2002
    Assignee: Agfa-Gevaert
    Inventors: Etienne Van Thillo, Patrick Mertens, Jozef Boeykens, Filip Vandaele
  • Permanent antistatic primer layer
    Patent number: 6225040
    Abstract: There is provided a method for preparing a biaxially oriented polyester sheet or web, with improved antistatic properties, comprising the steps of (i) stretching said polyester sheet or web first in one direction and second in a direction perpendicular thereto (ii) coating said hydrophobic polyester sheet or web, either before stretching or between said first and second stretching operation, on one or both sides, with a transparent antistatic primer layer, wherein the coating composition of said transparent antistatic primer layer comprises (1) a dispersion of a polythiophene with conjugated polymer backbone and a polymeric polyanion compound and (2) a latex polymer having hydrophilic functionality. The primer layer is coated from an aqueous composition and does not show a substantial change in resistivity depending on relative humidity or wet processing.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: May 1, 2001
    Assignee: Agfa-Gevaert
    Inventors: Bavo Muys, Dirk Quintens, Jozef Boeykens, Etienne Van Thillo, Geert Defieuw
  • Permanent antistatic primer layer
    Patent number: 5391472
    Abstract: There is provided a method for preparing a biaxially oriented polyester sheet or web, with improved antistatic properties, comprising the steps of(i) stretching said polyester sheet or web first in one direction and second in a direction perpendicular thereto(ii) coating said hydrophobic polyester sheet or web, either before stretching or between said first and second stretching operation, on one or both sides, with a transparent antistatic primer layer, wherein the coating composition of said transparent antistatic primer layer comprises (1) a dispersion of a polythiophene with conjugated polymer backbone and a polymeric polyanion compound and (2) a latex polymer having hydrophilic functionality.The primer layer is coated from an aqueous composition and does not show a substantial change in resistivity depending on relative humidity or wet processing.
    Type: Grant
    Filed: December 8, 1993
    Date of Patent: February 21, 1995
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Bavo Muys, Dirk Quintens, Jozef Boeykens, Etienne Van Thillo, Geert Defieuw