Patents by Inventor Grace B. Arhancet

Grace B. Arhancet 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).

  • Inhibition of viscosity increase and fouling in hydrocarbon streams including unsaturation
    Patent number: 6926820
    Abstract: A method of inhibiting fouling and viscosity increase in hydrocarbon streams including ethylenically unsaturated monomers is disclosed. The method includes the step of adding to the hydrocarbon stream an effective amount of one or more quinone methides of the formula: wherein R1, R2, and R3 are independently selected from the group consisting of H, —OH, —SH, —NH2, alkyl, cycloalkyl, heterocyclo, and aryl.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: August 9, 2005
    Assignee: G.E. Betz, Inc.
    Inventors: Sherif Eldin, Grace B. Arhancet
  • Inhibition of viscosity increase and fouling in hydrocarbon streams including unsaturation
    Publication number: 20040055932
    Abstract: A method of inhibiting fouling and viscosity increase in hydrocarbon streams including ethylenically unsaturated monomers is disclosed.
    Type: Application
    Filed: September 20, 2002
    Publication date: March 25, 2004
    Applicant: GE Betz, Inc.
    Inventors: Sherif Eldin, Grace B. Arhancet
  • Polymerization inhibitor for vinyl-containing materials
    Patent number: 6592722
    Abstract: This invention relates to a process of inhibiting the polymerization of vinyl-containing materials through the use of an effective amount of a polymerization inhibitor comprising quinone diimide and a nitroxyl stable free radical under various conditions. This invention also relates to the polymerization inhibitor composition.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: July 15, 2003
    Assignee: GE Betz, Inc.
    Inventor: Grace B. Arhancet
  • Polymerization inhibitor for vinyl-containing materials
    Publication number: 20030030035
    Abstract: This invention relates to a process of inhibiting the polymerization of vinyl-containing materials through the use of an effective amount of a polymerization inhibitor comprising quinone diimide and a nitroxyl stable free radical under various conditions. This invention also relates to the polymerization inhibitor composition.
    Type: Application
    Filed: September 4, 2002
    Publication date: February 13, 2003
    Applicant: GE Betz, Inc.
    Inventor: Grace B. Arhancet
  • Polymerization inhibitor for vinyl-containing materials
    Patent number: 6447649
    Abstract: This invention relates to a process of inhibiting the polymerization of vinyl-containing materials through the use of an effective amount of a polymerization inhibitor comprising quinone diimide and a nitroxyl stable free radical under various conditions. This invention also relates to the polymerization inhibitor composition.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: September 10, 2002
    Assignee: GE Betz, Inc.
    Inventor: Grace B. Arhancet
  • Compounds and methods for stabilization of furfural compositions
    Patent number: 6384249
    Abstract: Inhibitor compounds containing a moiety according to this invention are used to inhibit air oxidation and thermal polymerization of furfural or furfural derivatives. A process is provided for use of the inhibitors in the solvent refining of lubricating oils where furfural is used to extract impurities including polycyclic aromatic and oxygen-containing compounds from the lubricating oils. The process provides for combination of the inhibitor with a continuously recirculating furfural stream in the extraction process.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: May 7, 2002
    Assignee: Hercules, Inc.
    Inventors: James G. Edmondson, Grace B. Arhancet