Patents by Inventor William David Coulter

William David Coulter 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).

  • Sealing compounds with scavenger materials of small particle size
    Patent number: 10450448
    Abstract: PVC-free polymer compound for producing seals containing scavengers for screw caps, in particular twist crown corks, characterized in that the Shore A hardness of the polymer compound lies between 50 and 90 and, in a compression set test analogous to ASTM D395-97, Method B, the polymer compound has a compression set of between 30% and 90% after it has been left for 22 hours at 70° C. under a compression of 25%.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: October 22, 2019
    Assignee: Actega DS GmbH
    Inventors: William David Coulter, Rüdiger Wittenberg
  • Sealing Compounds with Scavenger Materials of Small Particle Size
    Publication number: 20170327673
    Abstract: PVC-free polymer compound for producing seals containing scavengers for screw caps, in particular twist crown corks, characterized in that the Shore A hardness of the polymer compound lies between 50 and 90 and, in a compression set test analogous to ASTM D395-97, Method B, the polymer compound has a compression set of between 30% and 90% after it has been left for 22 hours at 70° C. under a compression of 25%.
    Type: Application
    Filed: April 25, 2017
    Publication date: November 16, 2017
    Applicant: Actega DS GmbH
    Inventors: William David COULTER, Rüdiger WITTENBERG
  • Sealing compounds with scavenger materials of small particle size
    Patent number: 9663643
    Abstract: PVC-free polymer compound for producing seals containing scavengers for screw caps, in particular twist crown corks, characterized in that the Shore A hardness of the polymer compound lies between 50 and 90 and, in a compression set test analogous to ASTM D395-97, Method B, the polymer compound has a compression set of between 30% and 90% after it has been left for 22 hours at 70° C. under a compression of 25%.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: May 30, 2017
    Inventors: William David Coulter, Rüdger Wittenberg
  • Sealing Compounds with Scavenger Materials of Smaill Particle Size
    Publication number: 20130041087
    Abstract: PVC-free polymer compound for producing seals containing scavengers for screw caps, in particular twist crown corks, characterized in that the Shore A hardness of the polymer compound lies between 50 and 90 and, in a compression set test analogous to ASTM D395-97, Method B, the polymer compound has a compression set of between 30% and 90% after it has been left for 22 hours at 70° C. under a compression of 25%.
    Type: Application
    Filed: December 8, 2009
    Publication date: February 14, 2013
    Applicant: Actega DS GmbH
    Inventors: William David Coulter, Rüdger Wittenberg
  • Use of Spherical Metal Particles as Laser Marking Additives for Sealing, Closure or Coating Materials or Paints Comprising Polymer, and also Laser-Markable Sealing, Closure or Coating Material or Laser-Markable Paint Comprising Polymer
    Publication number: 20100203300
    Abstract: The invention relates to the use of spherical metal particles which are free from antimony and/or from compounds containing antimony as laser marking agents in a sealing or closure material, coating material or paint comprising polymer, the particle-size distribution of the spherical metal particles as determined by means of laser granulometry, in the form of the volume-averaged cumulative-undersize particle-size distribution, having a D99 of <110 ?m, a D90 of <75 ?m and a D50 of <45 ?m.
    Type: Application
    Filed: May 9, 2007
    Publication date: August 12, 2010
    Applicant: ACTEGA DS GMBH
    Inventors: William David Coulter, Rudiger Wittenberg