Patents Assigned to United Therapeutics Corporation
  • Patent number: 8536363
    Abstract: This invention pertains generally to prostacyclin analogs and methods for their use in promoting vasodilation, inhibiting platelet aggregation and thrombus formation, stimulating thrombolysis, inhibiting cell proliferation (including vascular remodeling), providing cytoprotection, preventing atherogenesis and inducing angiogenesis. Generally, the compounds and methods of the present invention increase the oral bioavailability and circulating concentrations of treprostinil when administered orally.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: September 17, 2013
    Assignee: United Therapeutics Corporation
    Inventors: Ken Phares, David Mottola
  • Publication number: 20130237567
    Abstract: Provided are methods of treating or preventing viral infections caused by or associated with a Dengue virus using iminosugars.
    Type: Application
    Filed: April 25, 2013
    Publication date: September 12, 2013
    Applicants: The Chancellor, Masters and Scholars of the University of Oxford, United Therapeutics Corporation
    Inventors: Urban Ramstedt, Brennan Klose, Nicole Zitzmann, Raymond A. Dwek, Terry D. Butters
  • Publication number: 20130195798
    Abstract: One can treat a viral infection by first administering at least one first antiviral compound for a first time period and then, after the end of the first time period, concurrently or subsequently administering the at least one first antiviral compound and at least one second antiviral compound for a second period. In some cases, after the end of the second period, the same at least one second antiviral compound that was administered during the second time period may be administered for a third time period without concurrent or subsequent administration of the at least one first antiviral compound.
    Type: Application
    Filed: November 21, 2012
    Publication date: August 1, 2013
    Applicants: The Chancellors, Masters and Scholars of the University of Oxford, United Therapeutics Corporation
    Inventors: United Therapeutics Corporation, The Chancellors, Masters and Scholars of the Univ
  • Patent number: 8497393
    Abstract: This present invention relates to an improved process to prepare prostacyclin derivatives. One embodiment provides for an improved process to convert benzindene triol to treprostinil via salts of treprostinil and to purify treprostinil.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: July 30, 2013
    Assignee: United Therapeutics Corporation
    Inventors: Hitesh Batra, Sudersan M. Tuladhar, Raju Penmasta, David A. Walsh
  • Publication number: 20130184295
    Abstract: The present invention is directed to a method of screening for a therapeutic agent useful for treating pulmonary hypertension comprising: contacting an erythrocyte with a candidate therapeutic agent; and detecting a presence or absence of erythrocyte-derived adenosine triphosphate, wherein a greater erythrocyte-derived adenosine triphosphate level indicates the candidate therapeutic agent has greater activity in treating pulmonary hypertension. Additionally, the present invention is directed to methods of treating pulmonary arterial hypertension by stimulating ATP release from erythrocytes through co-administration to a subject in need thereof an amount of a PDE5 inhibitor compound, and an amount of a prostacyclin compound.
    Type: Application
    Filed: January 10, 2013
    Publication date: July 18, 2013
    Applicant: United Therapeutics Corporation
    Inventor: United Therapeutics Corporation
  • Patent number: 8481782
    Abstract: The present invention is directed to a novel method for preparing a synthetic intermediate for treprostinil via a stereoselective alkyne addition reaction. Also described are methods of preparing treprostinil comprising the alkyne addition reaction described herein as well as novel intermediates useful for synthesis prostacyclin derivatives, such as treprostinil.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: July 9, 2013
    Assignee: United Therapeutics Corporation
    Inventors: Hitesh Batra, Raju Penmasta, Vijay Sharma, Sudersan M. Tuladhar, David A. Walsh
  • Publication number: 20130150405
    Abstract: Provided are novel methods of treating and/or preventing a disease or condition caused by or associated with a virus belonging to the Togaviridae family using iminosugars, such as DNJ derivatives.
    Type: Application
    Filed: February 7, 2013
    Publication date: June 13, 2013
    Applicants: The Chancellor, Masters and Scholars of the University of Oxford, United Therapeutics Corporation
    Inventors: United Therapeutics Corporation, The Chancellor, Masters and Scholars of the University of Oxford
  • Patent number: 8461393
    Abstract: The compound according to Formula I is an intermediate in the synthesis of prostacylin analogs. The present invention provides an efficient method for synthesizing a Formula I compound.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: June 11, 2013
    Assignee: United Therapeutics Corporation
    Inventor: Vijay Sharma
  • Patent number: 8450345
    Abstract: Provided are methods of treating or preventing viral infections caused by or associated with a Dengue virus using iminosugars.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: May 28, 2013
    Assignees: The Chancellor, Masters and Scholars of the University of Oxford, United Therapeutics Corporation
    Inventors: Urban Ramstedt, Brennan Klose, Nicole Zitzmann, Raymond A. Dwek, Terry D. Butters
  • Patent number: 8445670
    Abstract: A method of synthesizing stereochemically defined iminocyclitol comprises replacing an intraring oxygen in a cyclic sugar by an intraring imine to form an iminocyclitol, wherein said iminocyclitol has a defined stereochemical configuration different from a stereochemical configuration of the cyclic sugar. The invention also provides combinatorial libraries of iminocyclitol compounds, allowing for diverse C1 and N-substitution. In addition, provided are methods of treating viral infections with iminocyclitols compounds.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: May 21, 2013
    Assignee: United Therapeutics Corporation
    Inventors: Robert M. Moriarty, Carmen Mitan, Kenneth R. Phares
  • Patent number: 8426445
    Abstract: Provided are novel methods of treating and/or preventing a disease or condition caused by or associated with a virus belonging to the Bunyaviridae or Togaviridae family using iminosugars, such as DNJ derivatives.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: April 23, 2013
    Assignees: United Therapeutics Corporation, The Chancellor, Masters and Scholars of the University of Oxford
    Inventors: Urban Ramstedt, Brennan Klose, Nicole Zitzmann, Raymond A. Dwek, Terry D. Butters
  • Publication number: 20130096200
    Abstract: The present invention describes methods for using Treprostinil or its derivative, or a pharmaceutically acceptable salt thereof, for the treatment and/or prevention of interstitial lung disease or asthma, or a condition, such as pulmonary fibrosis, associated with interstitial lung disease or a condition associated with asthma. The invention also relates to kits for treatment and/or prevention of such condition that include an effective amount of Treprostinil or its derivative, or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: December 10, 2012
    Publication date: April 18, 2013
    Applicant: United Therapeutics Corporation
    Inventor: United Therapeutics Corporation
  • Patent number: 8410169
    Abstract: This invention pertains generally to prostacyclin analogs and methods for their use in promoting vasodilation, inhibiting platelet aggregation and thrombus formation, stimulating thrombolysis, inhibiting cell proliferation (including vascular remodeling), providing cytoprotection, preventing atherogenesis and inducing angiogenesis. Generally, the compounds and methods of the present invention increase the oral bioavailability and circulating concentrations of treprostinil when administered orally.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: April 2, 2013
    Assignee: United Therapeutics Corporation
    Inventors: Ken Phares, David Mottola
  • Patent number: 8367705
    Abstract: Provided are novel methods of treating and/or preventing a disease or condition caused by or associated with a virus belonging to the Bunyaviridae or Togaviridae family using iminosugars, such as DNJ derivatives.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: February 5, 2013
    Assignees: United Therapeutics Corporation, The Chancellor, Masters and Scholars of the University of Oxford
    Inventors: Urban Ramstedt, Brennan Klose, Nicole Zitzmann, Raymond A. Dwek, Terry D. Butters
  • Patent number: 8349892
    Abstract: Moderate moisture levels, such as greater than 3% but no greater than 7%, may be beneficial for solid formulations of certain prostacyclin analogs. Accordingly, a solid formulation containing a prostacyclin analog may be packaged inside a pharmaceutical packaging with such amount of a desiccant or a drying agent that after the storage the solid formulation may have a moderate level of moisture in it.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: January 8, 2013
    Assignee: United Therapeutics Corporation
    Inventor: Kenneth R. Phares
  • Patent number: 8350079
    Abstract: There is provided a stable monohydrate form of treprostinil and pharmaceutical formulation comprising the same, method of making and using the same.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: January 8, 2013
    Assignee: United Therapeutics Corporation
    Inventor: David A. Walsh
  • Patent number: 8252839
    Abstract: This invention pertains generally to prostacyclin analogs and methods for their use in promoting vasodilation, inhibiting platelet aggregation and thrombus formation, stimulating thrombolysis, inhibiting cell proliferation (including vascular remodeling), providing cytoprotection, preventing atherogenesis and inducing angiogenesis. Generally, the compounds and methods of the present invention increase the oral bioavailability and circulating concentrations of treprostinil when administered orally. Compounds of the present invention have the following formula.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: August 28, 2012
    Assignee: United Therapeutics Corporation
    Inventors: Ken Phares, David Mottola
  • Patent number: 8242305
    Abstract: This present invention relates to an improved process to prepare prostacyclin derivatives. One embodiment provides for an improved process to convert benzindene triol to treprostinil via salts of treprostinil and to purify treprostinil.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: August 14, 2012
    Assignee: United Therapeutics Corporation
    Inventors: Hitesh Batra, Sudersan M. Tuladhar, Raju Penmasta, David A. Walsh
  • Patent number: 8232316
    Abstract: This invention pertains generally to prostacyclin analogs and methods for their use in promoting vasodilation, inhibiting platelet aggregation and thrombus formation, stimulating thrombolysis, inhibiting cell proliferation (including vascular remodeling), providing cytoprotection, preventing atherogenesis and inducing angiogenesis. Generally, the compounds and methods of the present invention increase the oral bioavailability and circulating concentrations of treprostinil when administered orally.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: July 31, 2012
    Assignee: United Therapeutics Corporation
    Inventors: Ken Phares, David Mottola
  • Patent number: 7999007
    Abstract: Buffer solutions for pharmaceutical preparations that have bactericidal activity preferentially against gram negative bacteria are provided. The buffers have a pH of greater than about 10 or less than about 4.5 with low buffer capacity. Methods of their use in reducing the occurrence of blood stream infections in a mammal is also provided.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: August 16, 2011
    Assignee: United Therapeutics Corporation
    Inventors: Roger Jeffs, David Zaccardelli