Patents by Inventor James Windridge

James Windridge 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).

  • Granulated hydrophobic additive for gypsum compositions
    Patent number: 7311770
    Abstract: A hydrophobic gypsum composition is provided which contains gypsum, a granulated hydrophobing additive and a pH effecting additive in an amount sufficient to maintain the pH of the composition in the range of 8 and 12.5, in the presence of water. The granule contains an organopolysiloxane having silicon bonded hydrogen, a water soluble or water dispersible binder, and a carrier, preferably gypsum or a stearate salt, in an amount sufficient to hydrophobe the gypsum. The pH effecting additive is preferably lime but may be any appropriate additive.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: December 25, 2007
    Assignee: Dow Corning Corporation
    Inventors: James Windridge, Frederic Gubbels, Derek Butler, Manfred Wehner
  • Granulated hydrophobic additive for gypsum compositions
    Publication number: 20040050287
    Abstract: A hydrophobic gypsum composition is provided which contains gypsum, a granulated hydrophobing additive and a pH effecting additive in an amount sufficient to maintain the pH of the composition in the range of 8 and 12.5, in the presence of water. The granule contains an organopolysiloxane having silicon bonded hydrogen, a water soluble or water dispersible binder, and a carrier, preferably gypsum or a stearate salt, in an amount sufficient to hydrophobe the gypsum. The pH effecting additive is preferably lime but may be any appropriate additive.
    Type: Application
    Filed: October 8, 2003
    Publication date: March 18, 2004
    Inventors: James Windridge, Frederic Gubbels, Derek Butler, Manfred Wehner