Patents by Inventor Agnes Smith

Agnes Smith 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).

  • Gypsum based formulations
    Patent number: 9688576
    Abstract: The formulation for making plasterboard with paper cover sheets comprises finely divided gypsum, a minor amount by weight of starch and, as crosslinking agent for the starch, a tri-functional reactive s-triazine having substituents at positions 2, 4 and 6 of the triazine ring which are reactive with the starch. A preferred crosslinking agent is 2,4,6-trichloro-s-triazine, which is preferably partially reacted with the starch before further reaction with the paper cover sheets for the plaster board.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: June 27, 2017
    Assignee: BPB Limited
    Inventors: Agnes Smith, Thierry Chotard, Cyrielle S. Dupas, Ian Paul Wilkes
  • Gypsum Based Formulations
    Publication number: 20150239779
    Abstract: The formulation for making plasterboard with paper cover sheets comprises finely divided gypsum, a minor amount by weight of starch and, as crosslinking agent for the starch, a tri-functional reactive s-triazine having substituents at positions 2, 4 and 6 of the triazine ring which are reactive with the starch. A preferred crosslinking agent is 2,4,6-trichloro-s-triazine, which is preferably partially reacted with the starch before further reaction with the paper cover sheets for the plaster board.
    Type: Application
    Filed: December 22, 2014
    Publication date: August 27, 2015
    Inventors: Agnes Smith, Thierry Chotard, Cyrielle S. Dupas, Ian Paul Wilkes
  • Gypsum based formulations
    Patent number: 8916273
    Abstract: The formulation for making plasterboard with paper cover sheets comprises finely divided gypsum, a minor amount by weight of starch and, as crosslinking agent for the starch, a tri-functional reactive s-triazine having substituents at positions 2, 4 and 6 of the triazine ring which are reactive with the starch. A preferred crosslinking agent is 2,4,6-trichloro-s-triazine, which is preferably partially reacted with the starch before further reaction with the paper cover sheets for the plaster board.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: December 23, 2014
    Assignee: BPB Limited
    Inventors: Agnes Smith, Thierry Chotard, Cyrielle S. Dupas, Ian Wilkes
  • Gypsum Based Formulations
    Publication number: 20120058356
    Abstract: The formulation for making plasterboard with paper cover sheets comprises finely divided gypsum, a minor amount by weight of starch and, as crosslinking agent for the starch, a tri-functional reactive s-triazine having substituents at positions 2, 4 and 6 of the triazine ring which are reactive with the starch. A preferred crosslinking agent is 2,4,6-trichloro-s-triazine, which is preferably partially reacted with the starch before further reaction with the paper cover sheets for the plaster board.
    Type: Application
    Filed: October 19, 2009
    Publication date: March 8, 2012
    Applicant: BPB Limited
    Inventors: Agnes Smith, Thierry Chotard, Cyrielle S. Dupas, Ian Wilkes
  • Preparation of cement films by tape casting
    Patent number: 7695559
    Abstract: A cement suspension includes the following, in relation to the cement material: water (22-35% by weight); acetic acid (1-10% by weight); plasticizer (up to 8% by weight); and dispersant agent (0-2% by weight), having an apparent viscosity of 0.5-2 Pa·s for the casting speed gradient. Pieces of cement that are prepared from the suspension and which can be used as electronic components are also disclosed.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: April 13, 2010
    Assignees: Centre National de la Recherche Scientifique (C.N.R.S.), Ecole Nationale Superieure de Ceramique Industrielle (ENSCI)
    Inventors: Thierry Chartier, Youssef El Hafiane, Agnes Smith, Jean-Pierre Bonnet