Patents by Inventor Andrew Entwistle

Andrew Entwistle 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).

  • Patent number: 8796287
    Abstract: The invention comprises (1) anhydrous crystalline forms of N-[1-(2-ethoxyethyl)-5-(N-ethyl-N-methylamino)-7-(4-methylpyridin-2-yl-amino)-1H-pyrazolo[4,3-d]pyrimidine-3-carbonyl]methanesulfonamide, (2) pharmaceutical compositions comprising at least one such form, (3) methods for the treatment of a phosphodiesterase-5-mediated condition using at least one such form, and (4) methods for preparing such forms. The compound N-[1-(2-ethoxyethyl)-5-(N-ethyl-N-methylamino)-7-(4-methylpyridin-2-yl-amino)-1H-pyrazolo[4,3-d]pyrimidine-3-carbonyl]methanesulfonamide has the following structure (I).
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: August 5, 2014
    Assignee: Pfizer Inc.
    Inventors: David Andrew Entwistle, Peter Vallance Marshall, Stefan Colin John Taylor
  • Patent number: 8796288
    Abstract: The invention comprises (1) anhydrous crystalline forms of N-[1-(2-ethoxyethyl)-5-(N-ethyl-N-methylamino)-7-(4-methylpyridin-2-yl-amino)-1H-pyrazolo[4,3-d]pyrimidine-3-carbonyl]methanesulfonamide, (2) pharmaceutical compositions comprising at least one such form, (3) methods for the treatment of a phosphodiesterase-5-mediated condition using at least one such form, and (4) methods for preparing such forms. The compound N-[1-(2-ethoxyethyl)-5-(N-ethyl-N-methylamino)-7-(4-methylpyridin-2-yl-amino)-1H-pyrazolo[4,3-d]pyrimidine-3-carbonyl]methanesulfonamide has the following structure (I).
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: August 5, 2014
    Assignee: Pfizer Inc.
    Inventors: David Andrew Entwistle, Peter Vallance Marshall, Stefan Colin John Taylor
  • Publication number: 20120214827
    Abstract: The invention comprises (1) anhydrous crystalline forms of N-[1-(2-ethoxyethyl)-5-(N-ethyl-N-methylamino)-7-(4-methylpyridin-2-yl-amino)-1H-pyrazolo[4,3-d]pyrimidine-3-carbonyl]methanesulfonamide, (2) pharmaceutical compositions comprising at least one such form, (3) methods for the treatment of a phosphodiesterase-5-mediated condition using at least one such form, and (4) methods for preparing such forms. The compound N-[1-(2-ethoxyethyl)-5-(N-ethyl-N-methylamino)-7-(4-methylpyridin-2-yl-amino)-1H-pyrazolo[4,3-d]pyrimidine-3-carbonyl]methanesulfonamide has the following structure (I).
    Type: Application
    Filed: April 27, 2012
    Publication date: August 23, 2012
    Applicant: PFIZER INC.
    Inventors: David Andrew Entwistle, Peter Vallance Marshall, Stefan Colin John Taylor
  • Publication number: 20120208830
    Abstract: The invention comprises (1) anhydrous crystalline forms of N-[1-(2-ethoxyethyl)-5-(N-ethyl-N-methylamino)-7-(4-methylpyridin-2-yl-amino)-1H-pyrazolo[4,3-d]pyrimidine-3-carbonyl]methanesulfonamide, (2) pharmaceutical compositions comprising at least one such form, (3) methods for the treatment of a phosphodiesterase-5-mediated condition using at least one such form, and (4) methods for preparing such forms. The compound N-[1-(2-ethoxyethyl)-5-(N-ethyl-N-methylamino)-7-(4-methylpyridin-2-yl-amino)-1H-pyrazolo[4,3-d]pyrimidine-3-carbonyl]methanesulfonamide has the following structure (I).
    Type: Application
    Filed: April 27, 2012
    Publication date: August 16, 2012
    Applicant: PFIZER INC.
    Inventors: David Andrew Entwistle, Peter Vallance Marshall, Stefan Colin John Taylor
  • Patent number: 8227475
    Abstract: The invention comprises (1) anhydrous crystalline forms of N-[1-(2-ethoxyethyl)-5-(N-ethyl-N-methylamino)-7-(4-methylpyridin-2-yl-amino)-1H-pyrazolo[4,3-d]pyrimidine-3-carbonyl]methanesulfonamide, (2) pharmaceutical compositions comprising at least one such form, (3) methods for the treatment of a phosphodiesterase-5-mediated condition using at least one such form, and (4) methods for preparing such forms. The compound N-[1-(2-ethoxyethyl)-5-(N-ethyl-N-methylamino)-7-(4-methylpyridin-2-yl-amino)-1H-pyrazolo[4,3-d]pyrimidine-3-carbonyl]methanesulfonamide has the following structure (I).
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: July 24, 2012
    Assignee: Pfizer Inc.
    Inventors: David Andrew Entwistle, Peter Vallance Marshall, Stefan Colin John Taylor
  • Patent number: 7416900
    Abstract: A sample introduction system includes at least two, and preferably three, syringe pumps. The flow rates of two of the syringe pumps are varied, while keeping the overall flow rate constant. The sample introduction system is preferably utilised in an analytical instrument, such as to determine the concentration of an analyte in a sample.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: August 26, 2008
    Assignee: Micromass UK Limited
    Inventors: Andrew Eaton, Andrew Entwistle, Howard Read, Fadi Abou-Shakra
  • Publication number: 20080194591
    Abstract: The invention comprises (1) anhydrous crystalline forms of N-[1-(2-ethoxyethyl)-5-(N-ethyl-N-methylamino)-7-(4-methylpyridin-2-yl-amino)-1H-pyrazolo[4,3-d]pyrimidine-3-carbonyl]methanesulfonamide, (2) pharmaceutical compositions comprising at least one such form, (3) methods for the treatment of a phosphodiesterase-5-mediated condition using at least one such form, and (4) methods for preparing such forms. The compound N-[1-(2-ethoxyethyl)-5-(N-ethyl-N-methylamino)-7-(4-methylpyridin-2-yl-amino)-1H-pyrazolo[4,3-d]pyrimidine-3-carbonyl]methanesulfonamide has the following structure (I).
    Type: Application
    Filed: May 3, 2006
    Publication date: August 14, 2008
    Inventors: David Andrew Entwistle, Peter Vallance Marshall, Stefan Colin John Taylor
  • Patent number: 7384604
    Abstract: A sample introduction system includes at least two, and preferably three, syringe pumps. The flow rates of two of the syringe pumps are varied, while keeping the overall flow rate constant. The sample introduction system is preferably utilized in an analytical instrument, such as to determine the concentration of an analyte in a sample.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: June 10, 2008
    Assignee: Micromass UK Limited
    Inventors: Andrew Eaton, Andrew Entwistle, Howard Read, Fadi Abou-Shakra
  • Patent number: 6992281
    Abstract: An Inductively Coupled Plasma (“ICP”) mass spectrometer is disclosed comprising a mass filter and a reaction/collision cell. Analyte ions and background ions having the same nominal mass to charge ratio are transmitted by the mass filter. The analyte ions selectively react with gas in the reaction/collision cell to form product ions having different mass to charge ratios. By measuring the intensity of the product ions the intensity of the analyte ions can be determined. According to less preferred embodiments background ions may be neutralised or reacted in the reaction/collision cell.
    Type: Grant
    Filed: May 1, 2003
    Date of Patent: January 31, 2006
    Assignee: Micromass UK Limited
    Inventors: Fadi Abou-Shakra, Andrew Eaton, Andrew Entwistle, Heather Walker
  • Publication number: 20050256785
    Abstract: A system that displays images and other data of products in the form of an electronic catalog and displayed on a monitor or other viewing device. The system is designed to receive input from a user thereof and is animated to simulate the page turns of a conventional physical catalog. The system also provides for the automatic creation and update of its content through the use of a database containing product data, and maintains the ability to correlate products contained in the catalog for purposes of displaying related products, as well as products associated with the preferences or viewing and browsing history of the user.
    Type: Application
    Filed: May 12, 2004
    Publication date: November 17, 2005
    Inventors: Andrew Entwistle, Christopher Keenan
  • Patent number: 6891157
    Abstract: A mass spectrometer is disclosed comprising an AC or RF ion guide having a plurality of plate electrodes and an upper plate electrode and a lower plate electrode. One or more channels are formed within the plate electrodes so that an ion guiding region is formed within the ion guide. The channels and hence the ion guiding region may be curved.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: May 10, 2005
    Assignee: Micromass UK Limited
    Inventors: Robert Harold Bateman, Andrew Entwistle
  • Publication number: 20040026610
    Abstract: An Inductively Coupled Plasma (“ICP”) mass spectrometer is disclosed comprising a mass filter and a reaction/collision cell. Analyte ions and background ions having the same nominal mass to charge ratio are transmitted by the mass filter. The analyte ions selectively react with gas in the reaction/collision cell to form product ions having different mass to charge ratios. By measuring the intensity of the product ions the intensity of the analyte ions can be determined. According to less preferred embodiments background ions may be neutralised or reacted in the reaction/collision cell.
    Type: Application
    Filed: May 1, 2003
    Publication date: February 12, 2004
    Applicant: Micromass UK Limited
    Inventors: Fadi Abou-Shakra, Andrew Eaton, Andrew Entwistle, Heather Walker
  • Publication number: 20040026614
    Abstract: A mass spectrometer is disclosed comprising an AC or RF ion guide having a plurality of plate electrodes and an upper plate electrode and a lower plate electrode. One or more channels are formed within the plate electrodes so that an ion guiding region is formed within the ion guide. The channels and hence the ion guiding region may be curved.
    Type: Application
    Filed: June 2, 2003
    Publication date: February 12, 2004
    Inventors: Robert Harold Bateman, Andrew Entwistle
  • Publication number: 20030109061
    Abstract: A sample introduction system includes at least two, and preferably three, syringe pumps. The flow rates of two of the syringe pumps are varied, while keeping the overall flow rate constant. The sample introduction system is preferably utilised in an analytical instrument, such as to determine the concentration of an analyte in a sample.
    Type: Application
    Filed: November 1, 2002
    Publication date: June 12, 2003
    Inventors: Andrew Eaton, Andrew Entwistle, Howard Read, Fadi Abou-Shakra
  • Publication number: 20030106945
    Abstract: A sample introduction system includes at least two, and preferably three, syringe pumps. The flow rates of two of the syringe pumps are varied, while keeping the overall flow rate constant. The sample introduction system is preferably utilised in an analytical instrument, such as to determine the concentration of an analyte in a sample.
    Type: Application
    Filed: November 1, 2002
    Publication date: June 12, 2003
    Inventors: Andrew Eaton, Andrew Entwistle, Howard Read, Fadi Abou-Shakra