Patents by Inventor Jack Hugh Vass

Jack Hugh Vass 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).

  • Preparation of azoxystrobin
    Patent number: 8552185
    Abstract: The present invention relates, inter alia, to a process for preparing a compound of formula (I): using, as a catalyst 1,4-diazabicyclo[2.2.2]octane.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: October 8, 2013
    Assignee: Syngenta Limited
    Inventors: Gillian Beveridge, Ewan Campbell Boyd, Jack Hugh Vass, Alan John Whitton
  • Process for preparing 6-phenoxypyrimidin-4-OL derivatives in the presence of a quinuclidine or a -methyl pyrrolidine derivatives
    Patent number: 8350025
    Abstract: The present invention relates, inter alia, to a process for preparing a compound of formula (I): using a quinuclidine-based catalyst or an optionally 3-substituted N-methyl pryrrolidine-based catalyst.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: January 8, 2013
    Assignee: Syngenta Limited
    Inventors: Gillan Beveridge, Ewan Campbell Boyd, Jack Hugh Vass, Alan John Whitton
  • PROCESS FOR PREPARING 6-PHENOXYPYRIMIDIN-4-OL DERIVATIVES IN THE PRESENCE OF A QUINUCLIDINE OR A N-METHYL PYRROLIDINE DERIVATIVES
    Publication number: 20100063275
    Abstract: The present invention relates, inter alia, to a process for preparing a compound of formula (I): using a quinuclidine-based catalyst or an optionally 3-substituted N-methyl pryrrolidine-based catalyst.
    Type: Application
    Filed: October 2, 2007
    Publication date: March 11, 2010
    Applicant: SYNGENTA LIMITED
    Inventors: Gillan Beveridge, Ewan Campbell Boyd, Jack Hugh Vass, Alan John Whitton
  • PREPARATION OF AZOXYSTROBIN
    Publication number: 20100036124
    Abstract: The present invention relates, inter alia, to a process for preparing a compound of formula (I): using, as a catalyst 1,4-diazabicyclo[2.2.2]octane.
    Type: Application
    Filed: October 2, 2007
    Publication date: February 11, 2010
    Applicant: SYNGENTA LIMITED
    Inventors: Gillian Beveridge, Ewan Campbell Boyd, Jack Hugh Vass, Alan john Whitton