Patents by Inventor Peter T. Bishop

Peter T. Bishop 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).

  • Precious metal composition
    Patent number: 6013798
    Abstract: Gold thiolates of formula AuSR" or a salt thereof, in which R" is such that HSR" represents: 4,6-dihydroxy-2-mercaptopyrimidine;N-(2-mercaptoacetyl)glycine;N-(3-mercaptopropionyl)glycine; andN-(2-mercaptopropionyl)glycine. The invention provides also processes for preparing novel gold thiolates.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: January 11, 2000
    Assignee: Johnson Matthey Public Limited Company
    Inventor: Peter T Bishop
  • Precious metal composition
    Patent number: 5744245
    Abstract: A homogeneous composition for forming on firing a film of precious metal, which is one or more of platinum, palladium, gold and silver, on a substrate, for instance to decorate table ware, comprises polymeric resin and a solution, in water and a co-solvent, of thiolate of the precious metal, the composition containing 3-22% by weight of the precious metal as the thiolate, and the co-solvent, resin and thiolate being such that as the composition on a substrate dries and is progressively heated in firing, the water evaporates off to leave a homogeneous composition of the resin and thiolate in the co-solvent, then the co-solvent evaporates off to leave a homogeneous composition of the thiolate in the resin, and then the thiolate decomposes to the precious metal while the resin volatilize.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: April 28, 1998
    Assignee: Johnson Matthey Public Limited Company
    Inventor: Peter T. Bishop
  • Precious metal composition
    Patent number: 5401535
    Abstract: A homogeneous composition for forming on firing a film of precious metal, which is one or more of platinum, palladium, gold and silver, on a substrate, for instance to decorate table ware, comprises polymeric resin and a solution, in water and a co-solvent, of thiolate of the precious metal, the composition containing 3-22% by weight of the precious metal as the thiolate, and the co-solvent, resin and thiolate being such that as the composition on a substrate dries and is progressively heated in firing, the water evaporates off to leave a homogeneous composition of the resin and thiolate in the co-solvent, then the co-solvent evaporates off to leave a homogeneous composition of the thiolate in the resin, and then the thiolate decomposes to the precious metal while the resin volatilize.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: March 28, 1995
    Assignee: Johnson Matthey Public Limited Company
    Inventor: Peter T. Bishop
  • Precious metal composition
    Patent number: 5281635
    Abstract: A homogeneous composition for forming on firing a film of precious metal, which is one or more of platinum, palladium, gold and silver, on a substrate, for instance to decorate table ware, comprises polymeric resin and a solution, in water and a co-solvent, of thiolate of the precious metal, the composition containing 3-22% by weight of the precious metal as the thiolate, and the co-solvent, resin and thiolate being such that as the composition on a substrate dries and is progressively heated in firing, the water evaporates off to leave a homogeneous composition of the resin and thiolate in the co-solvent, then the co-solvent evaporates off to leave a homogeneous composition of the thiolate in the resin, and then the thiolate decomposes to the precious metal while the resin volatilise.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: January 25, 1994
    Assignee: Johnson Matthey Public Limited Company
    Inventor: Peter T. Bishop