Patents by Inventor David John Madge

David John Madge 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: 9216992
    Abstract: The present invention provides thienopyridine compounds which are potassium channel inhibitors. In another embodiment, the invention provides pharmaceutical compositions comprising thienopyridines. In another embodiment, the invention provides methods of using thienopyridines in the treatment or prevention of cancer, arrhythmias, autoimmune diseases and inflammatory diseases, including gastric cancer, atrial fibrillation, type-2 diabetes mellitus, rheumatoid arthritis, type-1 diabetes, inflammatory bowel disorder and demyelinating disorders such as multiple sclerosis.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: December 22, 2015
    Assignee: Xention Limited
    Inventors: John Ford, David John Madge, Helen Jane Payne, Jamie David Knight
  • Patent number: 8193215
    Abstract: The invention provides compounds of the formula: wherein R1 is aryl, heteroaryl, cycloalkyl or alkyl; R2 is H, alkyl, nitro, CO2R7, CONR5R6 or halo; R3 and R4 are H, NR5R6, NC(O)R7, halo, trifluromethyl, alkyl, CONR5R6, CO2R7, nitrile or alkoxy; R5 and R6 may be the same or different and may be H, alkyl, aryl, heteroaryl or cycloalkyl; or R5 and R6 may together form a saturated, unsaturated or partially saturated 4 to 7 member ring, wherein said ring may optionally comprise one or more further heteroatoms selected from N, O or S; R7 is H or alkyl; A is H, halo, or a group of formula X-L-Y; X is O, S or NR8; R8 is H or alkyl; L is (CH2)n, where n is 0, 1, 2, 3 or 4; and Y is aryl, a heterocyclic group, alkyl, alkenyl or cycloalkyl; the products of mono- and di-oxidation of sulphur and/or mono-oxidation of nitrogen moieties in compounds of formula I; or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: June 5, 2012
    Assignee: Xention Limited
    Inventors: John Ford, Nicholas John Palmer, John Frederick Atherall, David John Madge, Derek John
  • Patent number: 8022076
    Abstract: This invention relates to novel compound of formula (I) or pharmaceutically acceptable salts thereof. The invention is also directed to the uses of compounds having formula (I) in the treatment or prevention of diseases or disorders which requires potassium channel inhibition to an animal, mammal or human in need thereof. The invention is also directed to the use of compounds having formula (I) in the treatment or prevention of arrhythmia to an animal, mammal or human in need thereof.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: September 20, 2011
    Assignee: Xention Limited
    Inventors: John Ford, Nicholas John Palmer, John Frederick Atherall, David John Madge, Brad Sherborne, Mark Bushfield, Edward Benedict Stevens
  • Publication number: 20100041695
    Abstract: The invention provides compounds of the formula: wherein R1 is aryl, heteroaryl, cycloalkyl or alkyl; R2 is H, alkyl, nitro, CO2R7, CONR5R6 or halo; R3 and R4 are H, NR5R6, NC(O)R7, halo, trifluoromethyl, alkyl, CONR5R6, CO2R7, nitrile or alkoxy; R5 and R6 may be the same or different and may be H, alkyl, aryl, heteroaryl or cycloalkyl; or R5 and R6 may together form a saturated, unsaturated or partially saturated 4 to 7 member ring, wherein said ring may optionally comprise one or more further heteroatoms selected from N, O or S; R7 is H or alkyl; A is H, halo, or a group of formula X-L-Y; X is O, S or NR8; R8 is H or alkyl; L is (CH2)n, where n is 0, 1, 2, 3 or 4; and Y is aryl, a heterocyclic group, alkyl, alkenyl or cycloalkyl; the products of mono- and di-oxidation of sulphur and/or mono-oxidation of nitrogen moieties in compounds of formula I; or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: August 18, 2009
    Publication date: February 18, 2010
    Applicant: Xention Limited
    Inventors: John FORD, Nicholas John PALMER, John Frederick ATHERALL, David John MADGE, Derek JOHN
  • Patent number: 7576212
    Abstract: The invention provides compounds of the formula: wherein R1 is aryl, heteroaryl, cycloalkyl or alkyl; R2 is H, alkyl, nitro, CO2R7, CONR5R6 or halo; R3 and R4 are H, NR5R6, NC(O)R7, halo, trifluromethyl, alkyl, CONR5R6, CO2R7, nitrile or alkoxy; R5 and R6 may be the same or different and may be H, alkyl, aryl, heteroaryl or cycloalkyl; or R5 and R6 may together form a saturated, unsaturated or partially saturated 4 to 7 member ring, wherein said ring may optionally comprise one or more further heteroatoms selected from N, O or S; R7 is H or alkyl; A is H, halo, or a group of formula X-L-Y; X is O, S or NR8; R8 is H or alkyl; L is (CH2)n, where n is 0, 1, 2, 3 or 4; and Y is aryl, a heterocyclic group, alkyl, alkenyl or cycloalkyl; the products of mono- and di-oxidation of sulphur and/or mono-oxidation of nitrogen moieties in compounds of formula I; or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: August 18, 2009
    Assignee: Xention Limited
    Inventors: John Ford, Nicholas John Palmer, John Frederick Atherall, David John Madge, Derek John
  • Patent number: 7456187
    Abstract: A compound of formula (I) wherein R1 is aryl, heteroaryl, cycloalkyl or alkyl; R2 is H, alkyl, nitro, —CO2R7, CONR4R5 or halo; R3 is H, NR4R5, NC(O)R8, halo, trifluoromethyl, alkyl, nitrile or alkoxy; R4 and R5 may be the same or different, and may be H, alkyl, aryl, heteroaryl or cycloalkyl; or R4 and R5 may together form a saturated, unsaturated or partially saturated 4 to 7 member ring, wherein said ring may optionally comprise one or more further heteroatoms selected from N, O or S; X is O, S or NR6; R6 is H or alkyl; R7 is hydrogen, methyl or ethyl; R8 is methyl or ethyl; L is (CH2)n, where n is 1, 2 or 3; and Y is aryl, a heterocyclic group, alkyl, alkenyl or cycloalkyl; together with pharmaceutically acceptable salts thereof. The use of these compounds as potassium channel inhibitors is also described.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: November 25, 2008
    Assignee: Xention Limited
    Inventors: John Ford, Nicholas John Palmer, John Frederick Atherall, David John Madge