Patents by Inventor Peter Humphrey Williams

Peter Humphrey Williams 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).

  • Method for inducing bacterial growth using autoinducers
    Patent number: 6649398
    Abstract: A bacterial autoinducer and method for isolating and purifying a bacterial autoinducer form a sample comprising the steps of collecting a sample containing the autoinducer, fractionating the sample to isolate fractions corresponding to molecular weights of approximately 300-1500 Dalton, and eluting the isolate on an anion-exchange chromatographic column and selecting the faction containing the autoinducer.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: November 18, 2003
    Assignee: University of Leicester
    Inventors: Primrose Pamela Elaine Freestone, Peter Humphrey Williams, Mark Lyte, Richard David Haigh
  • E. coli, Salmonella or Hafnia autoinducers
    Publication number: 20020068330
    Abstract: The present invention concerns a novel bacterial autoinducer, methods of its manufacture, isolation and purification, uses of autoinducer isolated and purified using same, and the uses of the autoinducer.
    Type: Application
    Filed: July 12, 2001
    Publication date: June 6, 2002
    Inventors: Primrose Pamela Elaine Freestone, Peter Humphrey Williams, Mark Lyte, Richard David Haigh
  • E. coli, Salmonella or Hafnia autoinducers
    Patent number: 6316244
    Abstract: A bacterial autoinducer and method for isolating and purifying a bacterial autoinducer from a sample comprising the steps of collecting a sample containing the autoinducer, fractionating the sample to isolate fractions corresponding to molecular weights of approximately 300-1500 Dalton, and eluting the isolate on an anion-exchange chromatographic column and selecting the faction containing the autoinducer.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: November 13, 2001
    Assignee: University of Leicester
    Inventors: Primrose Pamela Elaine Freestone, Peter Humphrey Williams, Mark Lyte, Richard David Haigh