Patents by Inventor Richard John Hamlyn

Richard John Hamlyn 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: 9447033
    Abstract: The present invention provides a compound of formula (I) or its salts or pharmaceutically acceptable derivatives thereof wherein X1, R1, R2, R3, R4, and R5 are defined as set forth in the specification. The compounds are useful as potassium ion channel inhibitors.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: September 20, 2016
    Assignee: Japan Tobacco Inc.
    Inventors: Mushtaq Mulla, Derek Edward John, Richard John Hamlyn, Sasha Louise Garrett, Basil Hartzoulakis, David Madge, John Ford
  • Publication number: 20150259282
    Abstract: The present invention provides a compound of formula (I) or its salts or pharmaceutically acceptable derivatives thereof wherein X1, R1, R2, R3, R4, and R5 are defined as set forth in the specification. The compounds are useful as potassium ion channel inhibitors.
    Type: Application
    Filed: May 28, 2015
    Publication date: September 17, 2015
    Applicant: Xention Limited
    Inventors: Mushtaq MULLA, Derek Edward JOHN, Richard John HAMLYN, Sasha Louise GARRETT, Basil HARTZOULAKIS, David MADGE, John FORD
  • Patent number: 9073834
    Abstract: The present invention provides a compound of formula (I) or its salts or pharmaceutically acceptable derivatives thereof wherein X1, R1, R2, R3, R4, and R5 are defined as set forth in the specification. The compounds are useful as potassium ion channel inhibitors.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: July 7, 2015
    Assignee: Xention Limited
    Inventors: Mushtaq Mulla, Derek Edward John, Richard John Hamlyn, Sasha Louise Garrett, Basil Hartzoulakis, David Madge, John Ford
  • Publication number: 20140221337
    Abstract: The present invention provides a compound of formula (I) or its salts or pharmaceutically acceptable derivatives thereof wherein X1, R1, R2, R3, R4, and R5 are defined as set forth in the specification. The compounds are useful as potassium ion channel inhibitors.
    Type: Application
    Filed: February 6, 2014
    Publication date: August 7, 2014
    Applicant: Xention Limited
    Inventors: Mushtaq Mulla, Derek Edward John, Richard John Hamlyn, Sasha Louise Garrett, Basil Hartzoulakis, David Madge, John Ford
  • Patent number: 8673901
    Abstract: The present invention provides a compound of formula (I) or its salts or pharmaceutically acceptable derivatives thereof wherein X1, R1, R2, R3, R4, and R5 are defined as set forth in the specification. The compounds are useful as potassium ion channel inhibitors.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: March 18, 2014
    Assignee: Xention Limited
    Inventors: Mushtaq Mulla, Derek Edward John, Richard John Hamlyn, Sasha Louise Garrett, Basil Hartzoulakis, David Madge, John Ford
  • Patent number: 8426442
    Abstract: A compound of formula (I): Or its salts or pharmaceutically acceptable derivatives thereof wherein: A represents a chemical moiety with the general formula (II): X and Y are independently selected from a group consisting of CH2, CH(R5) or C(R5)(R6); R1 is selected from the group consisting of optionally substituted arylalkyl, and optionally substituted heteroarylalkyl; R2 is selected from the group consisting of optionally substituted aryl or optionally substituted heteroaryl or NR7R8; R3 R4 R5 R6 R7 and R8 are as defined herein, n=0, 1, 2 or 3; o=0, 1 or 2, with the proviso that when o=0, then n is 1, 2 or 3 and when o=1, then n is 1 or 2 is provided. Pharmaceutical compositions comprising the compounds are also provided. These compounds are useful in the treatment of various disorders including arrhythmia.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: April 23, 2013
    Assignee: Xention Ltd
    Inventors: Richard John Hamlyn, Mushtaq Mulla, David Madge, Basil Hartzoulakis, Simon Mark Jones, Derek Edward John, Oliver Gareth Dugdale
  • Patent number: 8399481
    Abstract: A compound of formula (I) Or its salts or pharmaceutically acceptable derivatives thereof wherein; A represents a chemical moiety with the general formula (II): X is selected from a group consisting of CH2, C(?O), CH(R5), C(R5)(R6) or C(R5)(R6)CH2; R1 is selected from the group consisting of optionally substituted arylalkyl, and optionally substituted heteroarylalkyl; R2 is selected from the group consisting of optionally substituted aryl or optionally substituted heteroaryl or NR7R8; R3 R4 R5 R6 R7 and R8 are as defined herein; and n=1 or 2 is provided. Pharmaceutical compositions comprising the compounds are also provided. The compounds are useful in treating various conditions including arrhythmia.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: March 19, 2013
    Assignee: Xention Ltd
    Inventors: Richard John Hamlyn, David Madge, Mushtaq Mulla, Basil Hartzoulakis, Simon Mark Jones, Derek Edward John, Oliver Gareth Dugdale
  • Patent number: 8372840
    Abstract: The present invention provides a compound of formula (I) or its salts or pharmaceutically acceptable derivatives thereof, wherein R1, R2, R3, R4, R5, X1, and j are defined herein. The compounds are useful as potassium ion channel inhibitors.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: February 12, 2013
    Assignee: Xention Limited
    Inventors: Richard John Hamlyn, Mushtaq Mulla, Derek Edward John, Simon Mark Jones, Basil Hartzoulakis, David Madge, John Ford
  • Patent number: 8258138
    Abstract: The present invention provides a compound of formula (I) or its salts or pharmaceutically acceptable derivatives wherein R1, R2, R3, X1, and A are defined herein. The compounds are useful as potassium ion channel inhibitors.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: September 4, 2012
    Assignee: Xention Limited
    Inventors: Derek Edward John, Mushtaq Mulla, Richard John Hamlyn, Simon Mark Jones, Derek Roland Pollard, Basil Hartzoulakis, Helen Payne, David Madge, John Ford
  • Publication number: 20110136859
    Abstract: A compound of formula (I) Or its salts or pharmaceutically acceptable derivatives thereof wherein; A represents a chemical moiety with the general formula (II): X is selected from a group consisting of CH2, C(?O), CH(R5), C(R5)(R6) or C(R5)(R6)CH2; R1 is selected from the group consisting of optionally substituted arylalkyl, and optionally substituted heteroarylalkyl; R2 is selected from the group consisting of optionally substituted aryl or optionally substituted heteroaryl or NR7R8; R3 R4 R5 R6 R7 and R8 are as defined herein; and n=1 or 2 is provided. Pharmaceutical compositions comprising the compounds are also provided. The compounds are useful in treating various conditions including arrhythmia.
    Type: Application
    Filed: June 4, 2010
    Publication date: June 9, 2011
    Applicant: Xention Ltd.
    Inventors: Richard John HAMLYN, David MADGE, Mushtaq MULLA
  • Publication number: 20110136860
    Abstract: A compound of formula (I): Or its salts or pharmaceutically acceptable derivatives thereof wherein: A represents a chemical moiety with the general formula (II): X and Y are independently selected from a group consisting of CH2, CH(R5) or C(R5)(R6); R1 is selected from the group consisting of optionally substituted arylalkyl, and optionally substituted heteroarylalkyl; R2 is selected from the group consisting of optionally substituted aryl or optionally substituted heteroaryl or NR7R8; R3 R4 R5 R6 R7 and R8 are as defined herein, n=0, 1, 2 or 3; o=0, 1 or 2, with the proviso that when o=0, then n is 1, 2 or 3 and when o=1, then n is 1 or 2 is provided. Pharmaceutical compositions comprising the compounds are also provided. These compounds are useful in the treatment of various disorders including arrhythmia.
    Type: Application
    Filed: June 4, 2010
    Publication date: June 9, 2011
    Applicant: Xention Ltd.
    Inventors: Richard John Hamlyn, Mushtaq Mulla, David Madge
  • Publication number: 20100087428
    Abstract: The present invention provides a compound of formula (I) or its salts or pharmaceutically acceptable derivatives thereof wherein; X1 is selected from a group consisting of CH2, C(?O), C(?NH), NC(?O), R1 is selected from the group consisting of optionally substituted arylalkyl, and optionally substituted heteroarylalkyl R2 is selected from the group consisting of optionally substituted alkyl, optionally substituted aryl or heteroaryl or NR24R25 R3 is selected from the group consisting of hydrogen, halogen, hydroxyl, alkoxy, aryloxy, optionally substituted alkyl, optionally substituted amino, optionally substituted amino sulfonyl or nitrile; R4 is selected from the group consisting of optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted heterocycloalkyl, optionally substituted acyl, optionally substituted sulfonyl, optionally substituted sulfamoyl, optionally substituted aryl, optionally substituted arylalkyl, and optionally substituted heteroaryl R5 may be hydrogen, an o
    Type: Application
    Filed: August 31, 2009
    Publication date: April 8, 2010
    Applicant: Xention Limited
    Inventors: Mushtaq Mulla, Derek Edward John, Richard John Hamlyn, Sasha Louise Garrett, Basil Hartzoulakis, David Madge, John Ford
  • Publication number: 20100087437
    Abstract: The present invention provides a compound of formula (I) or its salts or pharmaceutically acceptable derivatives wherein R1, R2, R3, X1, and A are defined herein. The compounds are useful as potassium ion channel inhibitors.
    Type: Application
    Filed: August 31, 2009
    Publication date: April 8, 2010
    Applicant: Xention Limited
    Inventors: Derek Edward JOHN, Mushtag MULLA, Richard John HAMLYN, Simon Mark JONES, Derek Roland POLLARD, Basil HARTZOULAKIS, Helen PAYNE, David MADGE, John FORD
  • Publication number: 20100087438
    Abstract: The present invention provides a compound of formula (I) or its salts or pharmaceutically acceptable derivatives thereof, wherein R1, R2, R3, R4, R5, X1, and j are defined herein. The compounds are useful as potassium ion channel inhibitors.
    Type: Application
    Filed: August 31, 2009
    Publication date: April 8, 2010
    Applicant: Xention Limited
    Inventors: Richard John HAMLYN, Mushtaq Mulla, Derek Edward John, Simon Mark Jones, Basil Hartzoulakis, David Madge, John Ford
  • Publication number: 20080125455
    Abstract: A chemical compound of formula (I) wherein R1 and R2 are independently selected from hydrogen and alkyl; R3 is alkyl; R4 and R5 are selected from hydrogen and alkyl; R6 and R7 are independently selected from hydrogen, halogen, hydroxyl, alkyl, aryl, amino, alkylamino, dialkylamino, alkoxy, aryloxy, alkylthio, alkylsulfoxyl, nitro, carbonitrile, carbo-alkoxy, carbo-aryloxy and carboxyl; and A is a 5- or 6-membered ring optionally containing one or more heteroatoms wherein the atoms of the ring A, other than the unsaturated carbon atoms of the phenyl ring to which the ring A is fused, are saturated or unsaturated, and pharmaceutically acceptable salts, addition compounds and prodrugs thereof; and the use thereof in therapy, particularly as an agonist or antagonist of a 5HT receptor, particularly a 5HT2C receptor, for instance in the treatment of disorders of the central nervous system; damage to the central nervous system, cardiovascular disorders; gastrointestinal disorders; diabetes insipidus, and sleep apnea
    Type: Application
    Filed: November 21, 2007
    Publication date: May 29, 2008
    Inventors: Jonathan Richard Anthony Roffey, James Edward Paul Davidson, Howard Langham Mansell, Richard John Hamlyn, David Reginald Adams
  • Publication number: 20080090858
    Abstract: A chemical compound of formula (I) wherein R1 and R2 are independently selected from hydrogen and alkyl; R3 is alkyl; R4 and R5 are selected from hydrogen and alkyl; R6 and R7 are independently selected from hydrogen, halogen, hydroxyl, alkyl, aryl, amino, alkylamino, dialkylamino, alkoxy, aryloxy, alkylthio, alkylsulfoxyl, nitro, carbonitrile, carbo-alkoxy, carbo-aryloxy and carboxyl; and A is a 5- or 6-membered ring optionally containing one or more heteroatoms wherein the atoms of the ring A, other than the unsaturated carbon atoms of the phenyl ring to which the ring A is fused, are saturated or unsaturated, and pharmaceutically acceptable salts, addition compounds and prodrugs thereof; and the use thereof in therapy, particularly as an agonist or antagonist of a 5HT receptor, particularly a 5HT2C receptor, for instance in the treatment of disorders of the central nervous system; damage to the central nervous system; cardiovascular disorders; gastrointestinal disorders; diabetes insipidus, and sleep apnea
    Type: Application
    Filed: December 4, 2007
    Publication date: April 17, 2008
    Inventors: Jonathan Richard Anthony Roffey, James Edward Paul Davidson, Howard Langham Mansell, Richard John Hamlyn, David Reginald Adams
  • Patent number: 7323473
    Abstract: A chemical compound of formula (I) wherein R1 and R2 are independently selected from hydrogen and alkyl; R3 is alkyl; R4 and R5 are selected from hydrogen and alkyl; R6 and R7 are independently selected from hydrogen, halogen, hydroxyl, alkyl, aryl, amino, alkylamino, dialkylamino, alkoxy, aryloxy, alkylthio, alkylsulfonyl, nitro, carbonitrile, carbo-alkoxy, carbo-aryloxy and carboxyl; and A is a 5- or 6-membered ring optionally containing one or more heteroatoms wherein the atoms of the ring A, other than the unsaturated carbon atoms of the phenyl ring to which the ring A is fused, are saturated or unsaturated, and pharmaceutically acceptable salts, addition compounds and prodrugs thereof; and the use thereof in therapy, particularly as an agonist or antagonist of a 5HT receptor, particularly a 5HT2C receptor, for instance in the treatment of disorders of the central nervous system; damage to the central nervous system; cardiovascular disorders; gastrointestinal disorders; diabetes insipidus, and sleep apnea
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: January 29, 2008
    Assignee: Vernalis Research Limited
    Inventors: Jonathan Richard Anthony Roffey, James Edward Paul Davidson, Howard Langham Mansell, Richard John Hamlyn, David Reginald Adams
  • Patent number: 7323486
    Abstract: A chemical compound of formula (I) wherein R1 and R2 are independently selected from hydrogen and alkyl; R3 is alkyl; R4 and R5 are selected from hydrogen and alkyl; R6 and R7 are independently selected from hydrogen, halogen, hydroxyl, alkyl, aryl, amino, alkylamino, dialkylamino, alkoxy, aryloxy, alkylthio, alkylsulfoxyl, nitro, carbonitrile, carbo-alkoxy, carbo-aryloxy and carboxyl; and A is a 5- or 6-membered ring optionally containing one or more heteroatoms wherein the atoms of the ring A, other than the unsaturated carbon atoms of the phenyl ring to which the ring A is fused, are saturated or unsaturated, and pharmaceutically acceptable salts, addition compounds and prodrugs thereof; and the use thereof in therapy, particularly as an agonist or antagonist of a 5HT receptor, particularly a 5HT2C receptor, for instance in the treatment of disorders of the central nervous system; damage to the central nervous system; cardiovascular disorders; gastrointestinal disorders; diabetes insipidus, and sleep apnea
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: January 29, 2008
    Assignee: Vernalis Research Limited
    Inventors: Jonathan Richard Anthony Roffey, James Edward Paul Davidson, Howard Langham Mansell, Richard John Hamlyn, David Reginald Adams
  • Patent number: 7323487
    Abstract: A chemical compound of formula (I) wherein R1 and R2 are independently selected from hydrogen and alkyl; R3 is alkyl; R4 and R5 are selected from hydrogen and alkyl; R6 and R7 are independently selected from hydrogen, halogen, hydroxyl, alkyl, aryl, amino, alkylamino, dialkylamino, alkoxy, aryloxy, alkylthio, alkylsulfoxyl, nitro, carbonitrile, carbo-alkoxy, carbo-aryloxy and carboxyl; and A is a 5- or 6-membered ring optionally containing one or more heteroatoms wherein the atoms of the ring A, other than the unsaturated carbon atoms of the phenyl ring to which the ring A is fused, are saturated or unsaturated, and pharmaceutically acceptable salts, addition compounds and prodrugs thereof; and the use thereof in therapy, particularly as an agonist or antagonist of a 5HT receptor, particularly a 5HT2c receptor, for instance in the treatment of disorders of the central nervous system; damage to the central nervous system; cardiovascular disorders; gastrointestinal disorders; diabetes insipidus, and sleep apnea
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: January 29, 2008
    Assignee: Vernalis Research Limited
    Inventors: Jonathan Richard Anthony Roffey, James Edward Paul Davidson, Howard Langham Mansell, Richard John Hamlyn, David Reginald Adams
  • Patent number: 7173056
    Abstract: A chemical compound of formula (I) wherein R1 and R2 are independently selected from hydrogen and alkyl; R3 is alkyl; R4 and R5 are selected from hydrogen and alkyl; R6 and R7 are independently selected from hydrogen, halogen, hydroxyl, alkyl, aryl, amino, alkylamino, dialkylamino, alkoxy, aryloxy, alkylthio, alkylsulfoxyl, nitro, carbonitrile, carbo-alkoxy, carbo-aryloxy and carboxyl; and A is a 5- or 6-membered ring optionally containing one or more heteroatoms wherein the atoms of the ring A, other than the unsaturated carbon atoms of the phenyl ring to which the ring A is fused, are saturated or unsaturated, and pharmaceutically acceptable salts, addition compounds and prodrugs thereof; and the use thereof in therapy, particularly as an agonist or antagonist of 5HT receptor, particularly a 5HT2C receptor, for instance in the treatment of disorders of the central nervous system; damage to the central nervous system; cardiovascular disorders; gastrointestinal disorders; diabetes insipidus, and sleep apnea,
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: February 6, 2007
    Assignee: Vernalis Research Limited
    Inventors: Jonathan Richard Anthony Roffey, James Edward Paul Davidson, Howard Langham Mansell, Richard John Hamlyn, David Reginald Adams