Patents by Inventor Robert M. Arrell

Robert M. Arrell 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 composition
    Patent number: 7393424
    Abstract: A gypsum composition comprising water, stucco, clay, an amine compound, a polyoxyalkylene, and a comb-branched copolymer is disclosed. The gypsum composition has improved fluidity. A method for preparing the gypsum composition is also disclosed. The method comprises mixing the components to form a slurry, casting the slurry into a product, and drying the product.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: July 1, 2008
    Assignee: Lyondell Chemical Technology, L.P.
    Inventors: Steven A. Schwartz, Sallie J. Lee, Frank J. Liotta, Jr., Robert M. Arrell
  • Gypsum composition
    Publication number: 20080087198
    Abstract: A gypsum composition comprising water, stucco, clay, an amine compound, a polyoxyalkylene, and a comb-branched copolymer is disclosed. The gypsum composition has improved fluidity. A method for preparing the gypsum composition is also disclosed. The method comprises mixing the components to form a slurry, casting the slurry into a product, and drying the product.
    Type: Application
    Filed: May 16, 2007
    Publication date: April 17, 2008
    Inventors: Steven A. Schwartz, Sallie J. Lee, Frank J. Liotta, Robert M. Arrell
  • Gypsum composition
    Patent number: 7261772
    Abstract: A gypsum composition comprising water, stucco, clay, an amine compound, a polyoxyalkylene, and a comb-branched copolymer is disclosed. The gypsum composition has improved fluidity. A method for preparing the gypsum composition is also disclosed. The method comprises mixing the components to form a slurry, casting the slurry into a product, and drying the product.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: August 28, 2007
    Assignee: Lyondell Chemical Technology, L.P.
    Inventors: Steven A. Schwartz, Sallie J. Lee, Frank J. Liotta, Jr., Robert M. Arrell
  • Process for making crosslinked polyvinylpyrrolidone with low swell volume
    Patent number: 6512066
    Abstract: A two-step, base-catalyzed process for making crosslinked polyvinylpyrrolidone (PVP-P) having a low swell volume is disclosed. A crosslinker is generated “in situ” in the first step by heating a basic aqueous mixture containing a relatively low concentration of N-vinylpyrrolidone under added inert gas pressure. In a second step, the reactor temperature is reduced to initiate polymerization. The process is a productive way to make PVP-P that is easy to isolate and purify. The polymer has a swell volume less than about 40 mL H2O/10 g polymer, which makes it valuable for beverage clarification.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: January 28, 2003
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Beth M. Steinmetz, Robert M. Arrell