Patents by Inventor David Elwyn Price

David Elwyn Price 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).

  • Publication number: 20130244517
    Abstract: A decorative or building product in which one or more constituents of the product include melamine cyanurate in an amount effective to provide or enhance opacity in the product.
    Type: Application
    Filed: November 21, 2011
    Publication date: September 19, 2013
    Applicant: DEPCO-TRH PTY LTD
    Inventor: David Elwyn Price
  • Publication number: 20110159208
    Abstract: A method of manufacturing a b-stage resin impregnated décor paper that is suitable for inclusion in a decorative or industrial laminate, includes impregnating a décor print base paper with a resin carried by a solvent, which resin includes one or more of melamine formaldehyde, urea formaldehyde, and phenol formaldehyde or any combination of these. Thereafter the resin impregnated paper is irradiated with near infra-red (NIR) radiation selected to partially remove solvent by evaporation of the solvent, whereby to produce a partially dried and partially cured printable b-stage resin impregnated paper. The partially dried and partially cured printable b-stage resin impregnated paper is then printed to obtain a décor paper suitable for subsequent final curing in the formation of a decorative or industrial laminate. Apparatus is also disclosed, as is a method that entails impregnating a paper with an aqueous urea solution and irradiating the wet impregnated paper with near infra-red (NIR) radiation.
    Type: Application
    Filed: May 7, 2008
    Publication date: June 30, 2011
    Applicant: Depco-TRH Pty Ltd
    Inventor: David Elwyn Price
  • Publication number: 20090220730
    Abstract: A material plate suitable for use as a floor covering comprises a middle substrate layer having two sides and a first and second decor layer on each side of the substrate. The decor layers may be advantageously different in aesthetic appearance. A transparent overlay layer is provided over the one and preferably both decor layers. Either the decor layers or the overlay layers, or both, comprise abrasion-resistant particles to extend wear.
    Type: Application
    Filed: June 11, 2008
    Publication date: September 3, 2009
    Inventor: David Elwyn Price
  • Publication number: 20090017223
    Abstract: A method and apparatus for manufacturing a b-stage pre-preg of resin impregnated paper or non-woven. The method includes irradiating a resin impregnated paper or non-woven with near infra-red (NIR) radiation to at least partially remove solvent by evaporation of the solvent, and to advance cure of the resin, whereby to produce an at least partially dried and at least partially cured b-stage pre-preg. The apparatus includes a resin impregnation station (10) for impregnating a paper or non-woven (5) with resin carried by a solvent, and a heating and curing station (20) having irradiation means (24, 25) to irradiate the impregnated paper or non-woven (5?) with near infra-red (NIR) radiation.
    Type: Application
    Filed: December 7, 2006
    Publication date: January 15, 2009
    Applicant: Depco-TRH Pty Ltd.
    Inventor: David Elwyn Price
  • Publication number: 20080199666
    Abstract: A method for manufacturing an impregnated paper or non-woven substrate (10) for use as or in a decorative laminate, comprises the steps of: (a) applying a monomer or oligomer to a paper or non-woven substrate (10), in a dry process step (20), which monomer or oligomer forms a film and/or filler bound to the substrate; (b) thereafter applying (30) to the substrate (10) having said film and/or filler of monomer or oligomer; a polymer resin compatible with and cross-linkable with the monomer or oligomer; and (c) treating (40) the resin whereby it forms a cross-link bond with the monomer or oligomer.
    Type: Application
    Filed: June 6, 2006
    Publication date: August 21, 2008
    Applicant: DEPCO-PPG PTY Ltd.
    Inventor: David Elwyn Price
  • Patent number: 7285328
    Abstract: A composition of matter comprises particles each having a substrate being an oxide or other suitable compound of a metal other than titanium or of certain non-metal elements, and a coating on said substrate being a layer of titanium dioxide. A method of forming particles of titania-coated substrate, includes contacting a bed of hydrated particles of an oxide or other suitable compound of a metal other than titanium or of certain non-metal elements with a fluid medium containing flowing titanium tetrachloride, under conditions in which a layer comprising one or more involatile oxychloride or oxide compounds is formed at and below the surface of each of a multiplicity of the particles of the oxide or other suitable compound which thereby provides a substrate for the layer. The oxychloride or oxide compound or compounds are treated to convert the layer to a Titania coating on the particles.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: October 23, 2007
    Assignee: Depco-TRH Pty Ltd
    Inventors: David Elwyn Price, Thomas Aloysius O'Donnell
  • Publication number: 20030143421
    Abstract: A composition of matter comprises particles each having a substrate being an oxide or other suitable compound of a metal other than titanium or of certain non-metal elements, and a coating on said substrate being a layer of titanium dioxide. A method of forming particles of titania-coated substrate, includes contacting a bed of hydrated particles of an oxide or other suitable compound of a metal other than titanium or of certain non-metal elements with a fluid medium containing flowing titanium tetrachloride, under conditions in which a layer comprising one or more involatile oxychloride or oxide compounds is formed at and below the surface of each of a multiplicity of the particles of the oxide or other suitable compound which thereby provides a substrate for the layer. The oxychloride or oxide compound or compounds are treated to convert the layer to a titania coating on the particles.
    Type: Application
    Filed: December 3, 2002
    Publication date: July 31, 2003
    Inventors: David Elwyn Price, Thomas Aloysius O'Donnell