Patents by Inventor John L. Fall

John L. Fall 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).

  • Foamed slurry and building panel made therefrom
    Patent number: 8142915
    Abstract: A gypsum slurry is described that includes water, a hydraulic component comprising at least 50% calcined gypsum by weight based on the dry weight of the hydraulic component, foam, a defoamer and a polycarboxylate dispersant. In some embodiments of the invention, the defoamer is combined with the dispersant prior to being added to the gypsum slurry. The defoamer and dispersant can be added as a physical mixture, wherein the defoamer is attached onto the dispersant polymer, or a combination thereof. A gypsum building panel is made from the gypsum slurry.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: March 27, 2012
    Assignee: United States Gypsum Company
    Inventors: David R. Blackburn, Runhai Lu, Sharon L. Tracy, Qingxia Liu, James R. Wittbold, Bruce Lynn Petersen, Alfred Li, John L. Fall, Michael P. Shake, Chris Lee
  • Foamed slurry and building panel made therefrom
    Patent number: 8088218
    Abstract: A gypsum slurry is described that includes water, a hydraulic component comprising at least 50% calcined gypsum by weight based on the dry weight of the hydraulic component, foam, a defoamer and a polycarboxylate dispersant. In some embodiments of the invention, the defoamer is combined with the dispersant prior to being added to the gypsum slurry. The defoamer and dispersant can be added as a physical mixture, wherein the defoamer is attached onto the dispersant polymer, or a combination thereof. In some embodiments, a gypsum building panel is made from the gypsum slurry.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: January 3, 2012
    Assignee: United States Gypsum Company
    Inventors: David R. Blackburn, Runhai Lu, Sharon L. Tracy, Qingxia Liu, James R. Wittbold, Bruce Lynn Petersen, Alfred Li, John L. Fall, Michael P. Shake, Chris Lee
  • FOAMED SLURRY AND BUILDING PANEL MADE THEREFROM
    Publication number: 20110213043
    Abstract: A gypsum slurry is described that includes water, a hydraulic component comprising at least 50% calcined gypsum by weight based on the dry weight of the hydraulic component, foam, a defoamer and a polycarboxylate dispersant. In some embodiments of the invention, the defoamer is combined with the dispersant prior to being added to the gypsum slurry. The defoamer and dispersant can be added as a physical mixture, wherein the defoamer is attached onto the dispersant polymer, or a combination thereof. A gypsum building panel is made from the gypsum slurry.
    Type: Application
    Filed: May 12, 2011
    Publication date: September 1, 2011
    Inventors: David R. Blackburn, Runhai Lu, Sharon L. Tracy, Qingxia Liu, James R. Wittbold, Bruce Lynn Petersen, Alfred Li, John L. Fall, Michael P. Shake, Chris Lee