Patents by Inventor Ruben S. Grewal

Ruben S. Grewal 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).

  • Composition and method for inhibiting polymerization and polymer growth
    Patent number: 7943809
    Abstract: A method for inhibiting the premature polymerization and the polymer growth of ethylenically unsaturated monomers is disclosed wherein the method comprises adding to said monomers an effective amount of at least one hydrogen donor or electron acceptor. In a preferred embodiment, the hydrogen donor or electron acceptor is used in combination with a stable nitroxyl free radical.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: May 17, 2011
    Assignee: Chemtura Corporation
    Inventors: Brigitte Benage, Gerald J. Abruscato, David J. Sikora, Ruben S. Grewal
  • COMPOSITION AND METHOD FOR INHIBITING POLYMERIZATION AND POLYMER GROWTH
    Publication number: 20100093897
    Abstract: A method for inhibiting the premature polymerization and the polymer growth of ethylenically unsaturated monomers is disclosed wherein the method comprises adding to said monomers an effective amount of at least one hydrogen donor or electron acceptor. In a preferred embodiment, the hydrogen donor or electron acceptor is used in combination with a stable nitroxyl free radical.
    Type: Application
    Filed: October 20, 2009
    Publication date: April 15, 2010
    Applicant: Chemtura Corporation
    Inventors: Brigitte BENAGE, Gerald J. ABRUSCATO, David J. SIKORA, Ruben S. GREWAL
  • Recycle of nitroxyl-containing streams at low temperature
    Publication number: 20020123658
    Abstract: An improved process for the production and purification of unsaturated monomers employing nitroxyl-containing inhibitors wherein process streams containing the inhibitor are recycled is disclosed, wherein the improvement comprises recycling said streams at a reboiler temperature no higher than about 110° C.
    Type: Application
    Filed: July 23, 2001
    Publication date: September 5, 2002
    Inventors: Brigitte Benage, Gerald J. Abruscato, Andrew J. Eisenstein, Kirk A. Schlup, Ruben S. Grewal, Brendan J. Geelan
  • Nitroaromatic solubilizer for nitroxyls in aromatic solvents
    Patent number: 6344560
    Abstract: A nitroaromatic compound is used to enhance the solubility of a nitroxyl compound in an aromatic hydrocarbon solvent.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: February 5, 2002
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Brendan J. Geelan, Brigitte Benage, Gerald J. Abruscato, Kirk A. Schlup, Ruben S. Grewal, Andrew J. Eisenstein