Patents by Inventor John Peter Warr

John Peter Warr 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 milling poorly soluble drugs in presence of liquid propellants
    Patent number: 8092785
    Abstract: Drug substance for use in a pharmaceutical formulation may be prepared by a process which process comprises co-milling a suspension of the drug substance and a pharmaceutically acceptable polymer in a liquid propellant.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: January 10, 2012
    Assignee: Glaxo Group Limited
    Inventors: James Matthew Butler, Angus Harry Forster, James Edon Patterson, John Peter Warr
  • Process for Milling Poorly Soluble Drugs in Presence of Liquid Propellants
    Publication number: 20080260657
    Abstract: Drug substance for use in a pharmaceutical formulation may be prepared by a process which process comprises co-milling a suspension of the drug substance and a pharmaceutically acceptable polymer in a liquid propellant.
    Type: Application
    Filed: August 22, 2005
    Publication date: October 23, 2008
    Inventors: James Matthew Butler, Angus Harry Forster, James Edon Patterson, John Peter Warr
  • Process
    Patent number: 7214389
    Abstract: A wet granulation process in which a pharmaceutical substance is granulated using a granulating fluid which is a halogenated hydrocarbon which has a normal boiling point below ambient temperature, for example 1,1,1,2-tetraflouroethane, under a pressure sufficient to maintain the halogenated hydrocarbon in a liquid state. A process in which the halogenated hydrocarbon is re-cycled, and suitable equipment for performing the process is also described.
    Type: Grant
    Filed: November 22, 2001
    Date of Patent: May 8, 2007
    Assignee: SmithKline Beecham, plc
    Inventors: Christopher Edmund Valder, John Peter Warr
  • Process and apparatus for producing particles using a supercritical fluid
    Patent number: 6830714
    Abstract: A process, and a suitable apparatus, for production of particles of a material in which stream of a dispersion of the material in a solvent and a stream of a compressible fluid antisolvent substance are mixed under conditions such that the substance is in compressible fluid antisolvent state. The mixture then flows along a conduit (17) toward an orifice (18), from which it flows into a downstream region in which the compressible fluid antisolvent substance decompresses and the material is isolated in a particulate state. Preferably the antisolvent substance is a supercritical fluid. The process and apparatus can generate a co-formulation of the material with additives which can be introduced in a suitable aqueous or solvent based carrier vehicle.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: December 14, 2004
    Assignee: SmithKline Beecham plc
    Inventors: Petrus Paulus Cornelis Avontuur, David Roy Merrifield, Andrew Robert Souter, Christopher Edmund Valder, John Peter Warr
  • Novel process
    Publication number: 20040070102
    Abstract: A wet granulation process in which a pharmaceutical substance is granulated using a granulating fluid which is a halogenated hydrocarbon which has a normal boiling point below ambient temperature, for example 1,1,1,2-tetraflouroethane, under a pressure sufficient to maintain the halogenated hydrocarbon in a liquid state. A process in which the halogenated hydrocarbon is re-cycled, and suitable equipment for performing the process is also described.
    Type: Application
    Filed: November 6, 2003
    Publication date: April 15, 2004
    Inventors: Christoper Edmund Valder, John Peter Warr