Patents by Inventor Kam C. Lui

Kam C. Lui 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: 11905652
    Abstract: Disclosed is composite comprising four layers, two of the layers is a polymer film and two of the layers are non-woven materials, that is suitable for use as a primary backing material and/or a secondary backing material in the manufacture of textile carpet compositions. Also disclosed is a method for making the disclosed composite.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: February 20, 2024
    Assignee: Columbia Insurance Company
    Inventor: Kam C. Lui
  • Publication number: 20210401209
    Abstract: Disclosed is composite comprising four layers, two of the layers is a polymer film and two of the layers are non-woven materials, that is suitable for use as a primary backing material and/or a secondary backing material in the manufacture of textile carpet compositions. Also disclosed is a method for making the disclosed composite.
    Type: Application
    Filed: June 25, 2021
    Publication date: December 30, 2021
    Inventor: Kam C. Lui
  • Patent number: 6506695
    Abstract: This invention provides breathable composite materials with good liquid barrier properties comprising a laminate of a nonwoven web layer and a breathable film layer wherein breathability of the composite is provided by a plurality of point-like deformations of the film layer. In one embodiment, the composites also have a soft, cloth-like texture at at least one surface thereof. Also provided is a process for making such composites comprising applying a molten film-forming resin composition capable of developing breathability on deformation to a nonwoven web, cooling the molten composition to form a coated web having a web layer bonded to a film layer, and subjecting the coated web to heat and pressure at a plurality of points on a surface thereof wherein the heat, pressure and density of, and proportion of the composite surface occupied by, the deformations are effective to impart breathability to the film without loss of liquid barrier properties.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: January 14, 2003
    Assignee: Rheinische Kunststoffewerke GmbH
    Inventors: Hugh C. Gardner, Jeffrey H. Mumm, Kam C. Lui
  • Publication number: 20020071944
    Abstract: This invention provides breathable composite materials with good liquid barrier properties comprising a laminate of a nonwoven web layer and a breathable film layer wherein breathability of the composite is provided by a plurality of point-like deformations of the film layer. In one embodiment, the composites also have a soft, cloth-like texture at at least one surface thereof. Also provided is a process for making such composites comprising applying a molten film-forming resin composition capable of developing breathability on deformation to a nonwoven web, cooling the molten composition to form a coated web having a web layer bonded to a film layer, and subjecting the coated web to heat and pressure at a plurality of points on a surface thereof wherein the heat, pressure and density of, and proportion of the composite surface occupied by, the deformations are effective to impart breathability to the film without loss of liquid barrier properties.
    Type: Application
    Filed: April 20, 1999
    Publication date: June 13, 2002
    Inventors: HUGH C. GARDNER, JEFFREY H. MUMM, KAM C. LUI