Patents by Inventor Alexander MacGregor

Alexander MacGregor 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).

  • Publication number: 20260160145
    Abstract: A hybrid rotating sealing element and a hybrid annular sealing system enable the mixed use of a hybrid rotating sealing element and actively controlled non-rotating ACD sealing element within a hybrid ACD-type or other packer-based annular sealing system or the exclusive use of hybrid rotating sealing elements. A seal and bearing housing includes an external sealing feature disposed about an outer portion of the housing, where the external sealing feature prevents leakage through an annular packer when actuated. When actuated the annular packer forms a sealing engagement with the external sealing feature, while permitting an internal mandrel to rotate and form an interference fit with drill pipe, tubulars, or tools disposed therethrough.
    Type: Application
    Filed: January 19, 2026
    Publication date: June 11, 2026
    Inventors: Justin Fraczek, Austin Johnson, Alexander MacGregor
  • Patent number: 10052301
    Abstract: The present invention provides a method for treating a cancer in a subject involving administering to the subject a compound of formula (II) or (II?): wherein R1, R2, R3, R4, R5, R6 and R7 are independently H, OH, alkoxy or alkylcarbonyloxy, or a pharmaceutically acceptable salt thereof. Also provided is a compound of formula (II) or (II)?, wherein R1 and R2 are independently OH, alkoxy or alkylcarbonyloxy, R3 and R4 are independently H, OH, alkoxy or alkylcarbonyloxy, R6 is H, alkoxy or alkylcarbonyloxy, R5 is H, OH or alkylcarbonyloxy, R6 is H or alkoxy, and R7 is H, or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: May 17, 2015
    Date of Patent: August 21, 2018
    Assignee: ORX PHARMACEUTICAL CORPORATION
    Inventor: Alexander MacGregor
  • Patent number: 9061993
    Abstract: The present invention provides a method for treating a cancer in a subject involving administering to the subject a compound of formula (II) or (II?): wherein R1, R2, R3, R4, R5, R6 and R7 are independently H, OH, alkoxy or alkylcarbonyloxy, or a pharmaceutically acceptable salt thereof. Also provided is a compound of formula (II) or (II)?, wherein R1 and R2 are independently OH, alkoxy or alkylcarbonyloxy, R3 and R4 are independently H, OH, alkoxy or alkylcarbonyloxy, R6 is H, alkoxy or alkylcarbonyloxy, R5 is H, OH or alkylcarbonyloxy, R6 is H or alkoxy, and R7 is H, or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: June 23, 2015
    Assignee: Toronto Institute of Pharmaceutical Technology
    Inventor: Alexander MacGregor
  • Patent number: 9061061
    Abstract: The present application relates to pharmaceutical compositions for reducing glucose excursions in a normal subject or a subject having an insulin-related disorder or dysglycemia. The pharmaceutical composition contains one or more active agent-containing layers, which each contain a dry blended mixture including a therapeutically effective amount of a polar ionizable insulin-sensitizing oral hypoglycemic agent or a pharmaceutically acceptable salt thereof, and an amphipathic compound in monomelic form consisting of an amphipathic ionic compound in monomelic form. Each dry blended mixture contains a sufficient amount of the amphipathic ionic compound such that upon contact with an aqueous fluid, the amphipathic ionic compound forms a reverse micelle comprising the polar ionizable insulin-sensitizing oral hypoglycemic agent.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: June 23, 2015
    Assignee: ORX PHARMACEUTICAL CORPORATION
    Inventor: Alexander MacGregor
  • Patent number: 8231897
    Abstract: The present invention provides a hydrostatic delivery system including a hydrostatic couple and an agent of interest. The hydrostatic couple includes at least one hydrodynamic fluid-imbibing polymer, and at least one hydrostatic pressure modulating agent. This delivery system has the ability to control the release of one or more agents of interest within a fluid environment following zero-order kinetics.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: July 31, 2012
    Inventor: Alexander MacGregor
  • Publication number: 20110159045
    Abstract: The present application relates to pharmaceutical compositions for reducing glucose excursions in a normal subject or a subject having an insulin-related disorder or dysglycemia. The pharmaceutical composition contains one or more active agent-containing layers, which each contain a dry blended mixture including a therapeutically effective amount of a polar ionizable insulin-sensitizing oral hypoglycemic agent or a pharmaceutically acceptable salt thereof, and an amphipathic compound in monomelic form consisting of an amphipathic ionic compound in monomelic form. Each dry blended mixture contains a sufficient amount of the amphipathic ionic compound such that upon contact with an aqueous fluid, the amphipathic ionic compound forms a reverse micelle comprising the polar ionizable insulin-sensitizing oral hypoglycemic agent.
    Type: Application
    Filed: August 24, 2009
    Publication date: June 30, 2011
    Inventor: Alexander Macgregor
  • Publication number: 20110086912
    Abstract: The present invention provides a method for treating a cancer in a subject involving administering to the subject a compound of formula (II) or (II?): wherein R1, R2, R3, R4, R5, R6 and R7 are independently H, OH, alkylcarbonyloxy, or a pharmaceutically acceptable salt thereof. Also provided is a compound of formula (II) or (II)?, wherein R1 and R2 are independently OH, alkoxy or alkylcarbonyloxy, R3 and R4 are independently H, OH, alkoxy or alkylcarbonyloxy, R6 is H, alkoxy or alkylcarbonyloxy, R5 is H, OH or alkylcarbonyloxy, R6 is H or alkoxy, and R7 is H, or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 14, 2011
    Inventor: ALEXANDER MACGREGOR
  • Publication number: 20080317847
    Abstract: The present invention provides a hydrostatic delivery system including a hydrostatic couple and an agent of interest. The hydrostatic couple includes at least one hydrodynamic fluid-imbibing polymer, and at least one hydrostatic pressure modulating agent. This delivery system has the ability to control the release of one or more agents of interest within a fluid environment following zero-order kinetics.
    Type: Application
    Filed: June 2, 2008
    Publication date: December 25, 2008
    Inventor: Alexander MACGREGOR
  • Patent number: 7381424
    Abstract: The present invention provides a hydrostatic delivery system comprising a hydrostatic couple and an agent of interest. The hydrostatic couple comprises, at least one hydrodynamic fluid-imbibing polymer, and at least one hydrostatic pressure modulating agent. This delivery system has the ability to control the release of one or more agent of interest within a fluid environment following zero-order kinetics.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: June 3, 2008
    Inventor: Alexander MacGregor
  • Publication number: 20050255156
    Abstract: The invention can be summarized as follows. The present invention provides a reverse-micellar delivery system for enhanced absorption of an agent of interest across biological membranes such as the gastro-intestinal tract of mammals. The reverse-micelles comprise at least one ionic amphipathic compound, and at least one polar active agent ionizable in aqueous or physiological media. The delivery system facilitates transportation of the agent across the gastro-intestinal tract or other membranes and enhances the in-vivo release and availability of the agent(s) of interest within a fluid environment.
    Type: Application
    Filed: July 22, 2005
    Publication date: November 17, 2005
    Inventor: Alexander MacGregor
  • Publication number: 20030113366
    Abstract: The invention can be summarized as follows. The present invention provides a reverse-micellar delivery system for enhanced absorption of an agent of interest across biological membranes such as the gastro-intestinal tract of mammals. The reverse-micelles comprise at least one ionic amphiphathic compound, and at least one polar active agent ionizable in aqueous or physiological media. The delivery system facilitates transportation of the agent across the gastro-intestinal tract or other membranes and enhances the in-vivo release and availability of the agent(s) of interest within a fluid environment.
    Type: Application
    Filed: December 14, 2001
    Publication date: June 19, 2003
    Inventor: Alexander MacGregor
  • Publication number: 20020155067
    Abstract: The present invention provides a hydrostatic delivery system comprising a hydrostatic couple and an agent of interest. The hydrostatic couple comprises, at least one hydrodynamic fluid-imbibing polymer, and at least one hydrostatic pressure modulating agent. This delivery system has the ability to control the release of one or more agent of interest within a fluid environment following zero-order kinetics.
    Type: Application
    Filed: April 2, 2002
    Publication date: October 24, 2002
    Inventor: Alexander MacGregor