Patents by Inventor Paul Hendry Stewart

Paul Hendry Stewart 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).

  • Purification of saturated halocarbons
    Patent number: 7186869
    Abstract: A process for removing one or more unsaturated halocarbons from a halocarbon mixture comprising one or more unsaturated halocarbons and one or more saturated halocarbons, which process comprises contacting the halocarbon mixture with a mixture of a solid chemical oxidant and a solid support in the presence of water.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: March 6, 2007
    Assignee: Ineos Fluor Holdings Limited
    Inventors: Stephen Andrew Flaherty, Paul Hendry Stewart
  • Production of hydrofluoroalkanes
    Patent number: 6891074
    Abstract: A process for the production of a hydrofluoroalkane, which process comprises contacting a hydrochlorofluoroethane of formula CClXYCFHZ, wherein X and Y are each independently chlorine or fluorine and Z is chlorine, fluorine or hydrogen, in the liquid phase with hydrogen fluoride and a fluorination catalyst and recovering a hydrofluoroalkane from the resulting products.
    Type: Grant
    Filed: September 3, 2001
    Date of Patent: May 10, 2005
    Assignee: Ineos Fluor Holdings Limited
    Inventors: Clive Robert Giddis, Paul Hendry Stewart
  • Purification of saturated halocarbons
    Publication number: 20040133051
    Abstract: A process for removing one or more unsaturated halocarbons from a halocarbon mixture comprising one or more unsaturated halocarbons and one or more saturated halocarbons, which process comprises contacting the halocarbon mixture with a mixture of a solid chemical oxidant and a solid support in the presence of water.
    Type: Application
    Filed: February 5, 2004
    Publication date: July 8, 2004
    Inventors: Stephen Andrew Flaherty, Paul Hendry Stewart
  • Production of hydrofluoroalkanes
    Publication number: 20040024270
    Abstract: A process for the production of a hydrofluoroalkane, which process comprises contacting a hydrochlorofluoroethane of formula CClXYCFHZ, wherein X and Y are each independently chlorine or fluorine and Z is chlorine, fluorine or hydrogen, in the liquid phase with hydrogen fluoride and a fluorination catalyst and recovering a hydrofluoroalkane from the resulting products.
    Type: Application
    Filed: May 13, 2003
    Publication date: February 5, 2004
    Inventors: Clive Robert Giddis, Paul Hendry Stewart