Patents by Inventor William Barry Thomas

William Barry Thomas 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).

  • Process for producing heteroaromatic carboxylic acids
    Patent number: 7560566
    Abstract: A process for the production of a heteroaromatic carboxylic acid comprising contacting in the presence of a catalyst, a precursor of said carboxylic acid with an oxidant, such contact being effected with said precursor and the oxidant in an aqueous solvent comprising water under supercritical conditions or near supercritical conditions close to the supercritical point.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: July 14, 2009
    Assignee: INVISTA North America S.a.r.l.
    Inventors: William Barry Thomas, Keith Whiston, Eduardo Cepeda Garcia-Verdugo, Martyn Poliakoff, Paul Anthony Hamley
  • Preparation of lactams
    Patent number: 7238804
    Abstract: A process for the manufacture of a lactam from an amino alkane nitrile and/or its hydrolysis derivatives, comprising reacting a solution comprising at least about 5% by weight amino alkane nitrile in water at a temperature of greater than or equal to about 350° C. and at a pressure of greater than about 250 bar. Optionally, a dilute acid may be added as a catalyst.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: July 3, 2007
    Assignee: Invista North America S. AR. L.
    Inventors: Martyn Poliakoff, Paul Hamley, Chong Yan, Eduardo Garcia-Verdugo Cepeda, Graham Robert Aird, Alexander Stuart Coote, Ian Pearson, William Barry Thomas