Patents by Inventor Stephen Robert Fletcher

Stephen Robert Fletcher 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: 20090137549
    Abstract: The present invention relates to compounds that are inhibitors of PDE1A, a phosphodiesterase that is involved in the modulation of the degradation of cartilage, joint degeneration and diseases involving such degradation and/or inflammation.
    Type: Application
    Filed: November 8, 2007
    Publication date: May 28, 2009
    Inventors: Paul John Edward, Mark Stuart Chambers, Christel Jeanne Marie Menet, Stephen Robert Fletcher, Rebecca Elizabeth Jarvis, Herve Van De Poel, Alexander Sudau, Alastair Rae, Peter Stanley Thomas
  • Patent number: 7449585
    Abstract: Compounds of formula (I), which are useful as therapeutic compounds, particularly in the treatment of pain and other conditions ameliorated by the modulation of the function of the vanilloid-1 receptor (VR1).
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: November 11, 2008
    Assignee: Merck Sharp & Dohme Ltd.
    Inventors: Frank Burkamp, Stephen Robert Fletcher
  • Patent number: 7442701
    Abstract: The present invention provides a compound of formula (I): wherein V represents NR5, O, S, SO or S(O)2; W and X each independently represent CH or N; Y represents N, CH or C—Ar2, with the proviso that at least one, but no more than two, of W, X and Y are N; Z represents CH or C—Ar2, with the proviso that when Y is N or CH then Z is C—Ar2, and with the further proviso that when Y is C—Ar2 then Z is CH; Ar1 represents a fused 9 or 10 membered heterobicyclic ring system containing one, two, three or four heteroatoms selected from nitrogen, oxygen and sulfur, wherein at least one of the rings in said ring system is aromatic; Ar2 represents an aromatic ring selected from phenyl, pyridyl, pyrimidinyl and pyridazinyl which is optionally fused and substituted; R1 represents halogen, hydroxy, oxo, C1-6alkyl, C2-6alkenyl, C2-6alkynyl, haloC1-6alkyl, hydroxyC1-6alkyl, C1-6alkoxy, haloC1-6alkoxy, hydroxyC1-6alkoxy, C3-7cycloalkyl, C3-7cycloalkoxy, C3-5cycloalkylC1-4alkyl, cyano, nitro, SR6, SOR6, SO2R6, COR6, NR3COR6, CON
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: October 28, 2008
    Assignee: Merck Sharp & Dohme Ltd.
    Inventors: Peter Blurton, Frank Burkamp, Stephen Robert Fletcher, Gregory John Hollingworth, A. Brian Jones, Edward Giles McIver, Christopher Richard Moyes, Lauren Rogers
  • Publication number: 20080242661
    Abstract: The present invention relates to compounds that are inhibitors of PDE1A, a phosphodiesterase that is involved in the modulation of the degradation of cartilage, joint degeneration and diseases involving such degradation and/or inflammation.
    Type: Application
    Filed: December 10, 2007
    Publication date: October 2, 2008
    Inventors: Graeme James Dykes, Stephen Robert Fletcher, Christel Jeanne Marie Menet, Nuria Merayo Merayo, Benoit Antoine Schmitt
  • Patent number: 7381725
    Abstract: A class of pyridazine derivatives, substituted in the 4-position by an optionally substituted heteroaromatic ring, being selective ligands for GABAA receptors, in particular having high affinity for the ?2 and/or ?3 and/or ?5 subunit thereof, are accordingly of benefit in the treatment and/or prevention of adverse conditions of the central nervous system, including anxiety, convulsions and cognitive disorders.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: June 3, 2008
    Assignee: Merck Sharp & Dohme Ltd.
    Inventors: Stephen Robert Fletcher, Angus Murray MacLeod, Monique Bodil Van Niel, Kevin Wilson
  • Patent number: 7329659
    Abstract: The present invention provides a compound of formula (I): in which Ar and R1 are phenyl or a heteroaromatic group, R2 is generally hydrogen, R3 is hydrogen or alkyl and X, Y and Z are generally CH or N as VR-1 antagonists; or a pharmaceutically acceptable salt thereof; pharmaceutical compositions comprising it; its use in therapy; use of it to manufacture medicaments to treat pain or inflammation; and methods of treating pain or inflammation
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: February 12, 2008
    Assignee: Merck Sharp & Dohme Limited
    Inventors: Peter Blurton, Frank Burkamp, Stephen Robert Fletcher, A. Brian Jones, Edward Giles McIver
  • Patent number: 6852718
    Abstract: A class of phenylsulphonyl derivatives wherein the sulphonyl moiety is also attached to an N-arylalkyl-substituted piperazine ring are selective antagonists of the human 5-HT2A receptor and are therefore useful as pharmaceutical agents, especially in the treatment and/or prevention of adverse conditions of the central nervous system, including schizophrenia and other psychotic disorders.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: February 8, 2005
    Assignee: Merck Sharp & Dohme Ltd
    Inventors: Frank Burkamp, Susan Koon-Fung Cheng, Stephen Robert Fletcher
  • Patent number: 6777430
    Abstract: A class of phenylsulphonyl derivatives wherein the sulphonyl moiety is also attached to an N-arylalkyl-substituted azetidine, pyrrolidine or piperidine ring are selective antagonists of the human 5-HT2A receptor and are therefore useful as pharmaceutical agents, especially in the treatment and/or prevention of adverse conditions of the central nervous system, including schizophrenia and depression.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: August 17, 2004
    Assignee: Merck Sharp & Dohme Ltd.
    Inventors: Peter Blurton, Frank Burkamp, Susan Koon-Fung Cheng, Stephen Robert Fletcher, Angus Murray MacLeod, Daniel Spinks, Monique Bodil Van Niel
  • Publication number: 20030203889
    Abstract: A class of phenylsulphonyl derivatives wherein the sulphonyl moiety is also attached to an N-arylalkyl-substituted azetidine, pyrrolidine or piperidine ring are selective antagonists of the human 5-HT2A receptor and are therefore useful as pharmaceutical agents, especially in the treatment and/or prevention of adverse conditions of the central nervous system, including schizophrenia and depression.
    Type: Application
    Filed: April 1, 2003
    Publication date: October 30, 2003
    Applicant: Merck & Co., Inc.
    Inventors: Peter Blurton, Frank Burkamp, Susan Koon-Fung Cheng, Stephen Robert Fletcher, Angus Murray MacLeod, Daniel Spinks, Monique Bodil Van Niel
  • Publication number: 20030181464
    Abstract: A class of phenylsulphonyl derivatives of the following formula (I) wherein Z represents halogen, cyano, nitro, trifluoromethyl, trifluoromethoxy, —Ra, —ORa, —SRa, —SORa, —SO2Ra, —SO2NRaRb, —NRaRb, —NRaCORb, —NRaCO2Rb; —CORa; —CO2Ra or —CONRaRb; or Z represents an optionally substituted five-membered heteroaromatic ring selected from furan, thiophene, pyrrole, oxazole, thiazole, isoxazole, isothiazole, imidazole, pyrazole, oxadiazole, thiadiazole, triazole and tetrazole; or Z represents an optionally substituted six-membered heteroaromatic ring selected from pyridine, pyrazine, pyrimidine and pyridazine; Ra and Rb independently represent hydrogen of C1-6 alkyl, or Ra and Rb, when linked through a nitrogen atom, together represent the residue of an azetidine, pyrrolidine, piperidine or morpholine ring; E represents a chemical bond or a straight or branched alkylene chain containing from 1 to 4 carbon atoms, optionally incorporating an oxyg
    Type: Application
    Filed: April 21, 2003
    Publication date: September 25, 2003
    Inventors: Frank Burkamp, Susan Koon-Fung Cheng, Stephen Robert Fletcher
  • Patent number: 6559166
    Abstract: A class of phenylsulphonyl derivatives wherein the sulphonyl moiety is also attached to an N-arylalkyl-substituted azetidine, pyrrolidine or piperidine ring are selective antagonists of the human 5-HT2A receptor and are therefore useful as pharmaceutical agents, especially in the treatment and/or prevention of adverse conditions of the central nervous system, including schizophrenia and depression.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: May 6, 2003
    Assignee: Merck Sharp & Dohme Ltd.
    Inventors: Peter Blurton, Frank Burkamp, Susan Koon-Fung Cheng, Stephen Robert Fletcher, Angus Murray MacLeod, Daniel Spinks, Monique Bodil Van Niel
  • Patent number: 6352994
    Abstract: Compounds according to Formula (I) or a salt thereof are selective ligands for GABAA receptors useful for treatment of disorders of the central nervous system:
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: March 5, 2002
    Assignee: Merck Sharp & Dohme Limited
    Inventors: Ian James Collins, Stephen Robert Fletcher, Timothy Harrison, Paul David Leeson, Christopher Richard Moyes, Alan John Nadin, Michael Rowley, Timothy Jason Sparey, Martin Richard Teall
  • Publication number: 20010018438
    Abstract: Compounds according to Formula (I) or a salt thereof are selective ligands for GABAA receptors useful for treatment of disorders of the central nervous system: 1
    Type: Application
    Filed: January 4, 2001
    Publication date: August 30, 2001
    Applicant: MERCK SHARP & DOHME LIMITED
    Inventors: Ian James Collins, Stephen Robert Fletcher, Timothy Harrison, Paul David Leeson, Christopher Richard Moyes, Alan John Nadin, Michael Rowley, Timothy Jason Sparey, Martin Richard Teall
  • Patent number: 6200982
    Abstract: Substituted 1H-Pyridinyl-2-ones are useful as GABAA-Alpha 2/3 ligands.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: March 13, 2001
    Assignee: Merck & Dohme Limited
    Inventors: Ian James Collins, Stephen Robert Fletcher, Timothy Harrison, Paul David Leeson, Christopher Richard Moyes, Alan John Nadin, Michael Rowley, Timothy Jason Sparey, Martin Richard Teall
  • Patent number: 6180630
    Abstract: Pyrazolo[4,3-c]pyridazin-3-one analogues, represented by are selective ligands for GABAA receptors, in particular having high affinity for the &agr;2 and/or &agr;3 subunit thereof, are useful in the treatment of anxiety and convulsions.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: January 30, 2001
    Assignee: Merck Sharp & Dohme Limited
    Inventors: Peter Blurton, Stephen Robert Fletcher
  • Patent number: 5696110
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: December 9, 1997
    Assignee: Merck, Sharp & Dohme, Ltd.
    Inventors: Sylvie Bourrain, Stephen Robert Fletcher, Victor Giulio Matassa, Graham Andrew Showell