Patents by Inventor Anne Buegman

Anne Buegman 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: 6592977
    Abstract: The invention provides for a substrate coated with a non-stick coating which resists abrasion force, the coating comprising a fluoropolymer resin containing ceramic particles to deflect the abrasion force away from the coating wherein the ratio of the thickness of the coating to the longest diameter of said ceramic particles is in the range of 0.8-2.0. Further, the invention provides for a substrate coated with a non-stick coating which resists abrasion force, the coating comprising an undercoat and an overcoat, each containing fluoropolymer resin, the undercoat also containing ceramic particles extending from the undercoat, the overcoat telegraphing the particles extending from the undercoat through the thickness of the overcoat to deflect the abrasion force away from the coating. Preferably, the ratio of the combined thickness of the undercoat and the overcoat to the longest diameter of the ceramic particles is in the range of 0.8-2.0.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: July 15, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Phillipe Andre Fernand Thomas, Walter Andre Jules Stoks, Anne Buegman
  • Publication number: 20020002229
    Abstract: The invention provides for a substrate coated with a non-stick coating which resists abrasion force, the coating comprising a fluoropolymer resin containing ceramic particles to deflect the abrasion force away from the coating wherein the ratio of the thickness of thecoating to the longest diameter of said ceramic particles is in the range of 0.8-2.0.
    Type: Application
    Filed: June 26, 2001
    Publication date: January 3, 2002
    Inventors: Phillipe Andre Fernand Thomas, Walter Andre Jules Stoks, Anne Buegman
  • Patent number: 6291054
    Abstract: A substrate is coated with a fluoropolymer non-stick coating comprising an undercoat and an overcoat, each containing fluoropolymer resin, said undercoat containing ceramic particles which extend from said undercoat, wherein said ceramic particles telegraph their presence through the overcoat, forming protrusions on the coating surface, to provide abrasion resistance to said coating by deflecting abrasion force away from the coating.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: September 18, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Phillipe Andre Fernand Thomas, Walter Andre Jules Stoks, Anne Buegman
  • Patent number: 6242089
    Abstract: A coated substrate comprising: (a) a substrate; (b) a primer layer containing adhesion-promoting polymer on said substrate; and (c) at least one topcoat of a permeation resistant composition of ethylene-tetrafluoroethylene (ETFE) copolymer and mica, therein the ETFE is a copolymer of about 40 to 60 mole % ethylene and about 60 to 40 mole % tetrafluoroethylene, wherein the mica is present in amounts of about 3 to about 25 wt % based on the ETFE and mica, and wherein the topcoat having a thickness of at least 150 &mgr;m. The coated substrate is formed by applying the primer to the substrate and drying, followed by dry powder coating at least one layer of ETFE and mica composition, followed by heating said layer.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: June 5, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Anne Buegman
  • Patent number: 5849829
    Abstract: Compositions of ETFE and mica are resistant to permeation by water and provide useful coatings for such items as chemical equipment. The composition can be used either as films which can be laminated to substrates or as coatings which can be applied by electrostatic spray of dry powder thereby causing the powders to hot flock on a heated substrate.
    Type: Grant
    Filed: August 7, 1996
    Date of Patent: December 15, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Anne Buegman