Patents by Inventor John Paul Breen

John Paul Breen 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 paraxylene by methylating toluene with methanol at a low contacting time
    Patent number: 7321072
    Abstract: A process for producing para-xylene by the selective methylation of toluene comprising contacting a reactant mixture comprising toluene, methanol and added water, with an oxide modified ZSM-5 zeolite catalyst in a flow reactor in conditions selected to limit coke formation on the catalyst and at a contact time, between reactant mixture and catalyst, of less than 1 second.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: January 22, 2008
    Assignee: Johnson Matthey PLC
    Inventors: John Paul Breen, Robert Burch, Paul John Collier, Stanislaw Edmund Golunski