Abstract: The invention relates to a novel crystallization process for preparing fluticasone propionate as crystalline form 1 polymorph with controlled particle size and suitable for micronization. Said process comprises the step of dissolving fluticasone propionate in acetone or in a mixture of acetone and water and then adding this solution to water or to a mixture of water 10 and acetone, thereby causing fluticasone propionate to crystallize out of the solution as crystalline form.
Type:
Grant
Filed:
July 6, 2012
Date of Patent:
August 6, 2019
Assignee:
Pfizer Limited
Inventors:
Martyn David Ticehurst, Ivan Marziano, Eleftherios Kougoulos
Abstract: A device for dispensing individual doses of powder from respective pockets of a disc-shaped carrier by outwardly rupturing a lidding foil by means of pressure on an opposite side surface, the device providing individual respective deaggregation flow paths for each pocket, split airstreams allowing improved entrainment of powder, a cam mechanism for outwardly rupturing the pockets, an indexing mechanism linked to the cam mechanism and a dose counter.
Type:
Grant
Filed:
June 13, 2016
Date of Patent:
November 13, 2018
Assignee:
Pfizer Limited
Inventors:
Peter J. Houzego, John Kelshaw Conway, Martin Douglas Pearl, Andrew Mark Bryant
Abstract: The present invention relates to imidazopyridazine derivatives. More particularly, it relates to 4-(biphenyl-3-yl)-7H-imidazo[4,5-c]pyridazine derivatives of formula (I): and pharmaceutically acceptable salts thereof, wherein R1, R2, R3, R4, R5 and R6 are as defined in the description. The imidazopyridazine derivatives of the present invention modulate the activity of the GABAA receptor. They are useful in the treatment of a number of conditions, including pain.
Type:
Grant
Filed:
June 3, 2015
Date of Patent:
October 31, 2017
Assignee:
Pfizer Limited
Inventors:
Robert McKenzie Owen, David Cameron Pryde, Mifune Takeuchi, Christine Anne Louise Watson
Abstract: The present invention relates to compounds of Formula (I) described herein and their pharmaceutically acceptable salts, and their use in medicine, in particular as Trk antagonists.
Type:
Application
Filed:
December 8, 2014
Publication date:
October 26, 2017
Applicant:
Pfizer Limited
Inventors:
SARAH ELIZABETH SKERRATT, SHARANJEET KAUR BAGAL, NIGEL ALAN SWAIN, KIYOYUKI OMOTO, MARK DAVID ANDREWS
Abstract: The present invention relates to solid molecular dispersion of fesoterodine hydrogen fumarate and a polymeric binder. The invention also relates to an inert core bead or particle which is coated with said solid molecular dispersion and to pharmaceutical formulations comprising such coated beads or particles.
Type:
Application
Filed:
April 12, 2017
Publication date:
October 5, 2017
Applicant:
Pfizer Limited
Inventors:
Roland Bodmeier, Alan Francis Carmody, Mesut Ciper, Anne Therese Gustaaf De Paepe, John Mark Heimlich, Martin Korber, Mathias Walther, Neil Feeder
Abstract: The present invention relates to imidazopyridazine derivatives. More particularly, it relates to 4-(biphenyl-3-yl)-7H-imidazo[4,5-c]pyridazine derivatives of formula (I): and pharmaceutically acceptable salts thereof, wherein R1, R2, R3, R4, R5 and R6 are as defined in the description. The imidazopyridazine derivatives of the present invention modulate the activity of the GABAA receptor.
Type:
Application
Filed:
June 3, 2015
Publication date:
July 13, 2017
Applicant:
Pfizer Limited
Inventors:
Robert McKenzie OWEN, David Cameron PRYDE, Mifune TAKEUCHI, Christine Anne Louise WATSON
Abstract: The present invention relates to a solid molecular dispersion of from 3:97 to 12:88 weight % ratio of fesoterodine hydrogen fumarate and a polymeric binder selected from the group consisting of an alkyl hydroxyalkylcellulose ether, a hydroxyalkylcellulose ether, an ester of either thereof, and a mixture of any two or more thereof.
Type:
Grant
Filed:
January 17, 2012
Date of Patent:
June 6, 2017
Assignee:
Pfizer Limited
Inventors:
Roland Bodmeier, Alan Francis Carmody, Mesut Ciper, Anne Therese Gustaaf De Paepe, John Mark Heimlich, Martin Korber, Mathias Walther, Neil Feeder
Abstract: The present invention relates to compounds of Formula (I) and their pharmaceutically acceptable salts, wherein the substituents are as described herein, and their use in medicine, in particular as Trk antagonists.
Type:
Grant
Filed:
September 26, 2013
Date of Patent:
October 20, 2015
Assignee:
Pfizer Limited
Inventors:
Mark David Andrews, Sharanjeet Kaur Bagal, David Graham Brown, Karl Richard Gibson, Wolfgang Klute, Inaki Morao, Kiyoyuki Omoto, Thomas Ryckmans, Yogesh Sabnis, Sarah Elizabeth Skerratt, Paul Anthony Stupple
Abstract: The invention relates to new sulfonamide Nav1.7 inhibitors and pharmaceutically acceptable salts thereof, to their use in medicine, to compositions containing them, to processes for their preparation and to intermediates used in such processes. Nav 1.7 inhibitors are potentially useful in the treatment of a wide range of disorders, particularly pain.
Type:
Grant
Filed:
June 28, 2011
Date of Patent:
September 29, 2015
Assignees:
Pfizer Limited, Icagen, Inc.
Inventors:
Christopher John Markworth, Brian Edward Marron, David James Rawson, Robert Ian Storer, Nigel Alan Swain, Christopher William West, Shulan Zhou
Abstract: The present invention relates to compounds of Formula (IA) and (IB) and their pharmaceutically acceptable salts, wherein the substituents are as described herein, and their use in medicine, in particular as Trk antagonists.
Type:
Application
Filed:
September 26, 2013
Publication date:
September 10, 2015
Applicant:
Pfizer Limited
Inventors:
Mark David Andrews, Sharanjeet Kaur Bagal, Sarah Elizabeth Skerratt
Abstract: The present invention relates to compounds of Formula (I) and their pharmaceutically acceptable salts, wherein the substituents are as described herein, and their use in medicine, in particular as Trk antagonists.
Type:
Application
Filed:
September 26, 2013
Publication date:
September 3, 2015
Applicant:
Pfizer Limited
Inventors:
Mark David Andrews, Sharanjeet Kaur Bagal, David Graham Brown, Karl Richard Gibson, Wolfgang Klute, Inaki Morao, Kiyoyuki Omoto, Thomas Ryckmans, Yogesh Sabnis, Sarah Elizabeth Skerratt, Paul Anthony Stupple
Abstract: The invention relates to sulfonamide derivatives, to their use in medicine, to 5 compositions containing them, to processes for their preparation and to intermediates used in such processes. More particularly the invention relates to a new sulfonamide Nav1.7 inhibitors of formula (I): 10 X NH O S O O R1 R2 R5 R4 R3 Het1 (I) or a pharmaceutically acceptable salt thereof, wherein X, Het1, R1, R2, R3, R4 and R5 are as defined in the description. 15 Nav 1.7 inhibitors are potentially useful in the treatment of a wide range of disorders, particularly pain.
Type:
Grant
Filed:
July 4, 2011
Date of Patent:
August 11, 2015
Assignee:
Pfizer Limited
Inventors:
Alan Daniel Brown, David James Rawson, Robert Ian Storer, Nigel Alan Swain
Abstract: The present invention relates to compounds of Formula (I) and their pharmaceutically acceptable salts, wherein the substituents are as described herein, and their use in medicine, in particular as Trk antagonists.
Type:
Application
Filed:
September 26, 2013
Publication date:
August 6, 2015
Applicant:
Pfizer Limited
Inventors:
Mark David Andrews, Sharanjeet Kaur Bagal, David Graham Brown, Karl Richard Gibson, Kiyoyuki Omoto, Thomas Ryckmans, Yogesh Sabnis, Sarah Elizabeth Skerratt, Paul Anthony Stupple
Abstract: The invention relates to sulfonamide derivatives, to their use in medicine, to compositions containing them, to processes for their preparation and to intermediates used in such processes. More particularly the invention relates to a new sulfonamide Nav1.7 inhibitors of formula (I): or a pharmaceutically acceptable salt thereof, wherein X, Ar1, R1, R2, R3, R4 and R5 are as defined in the description. Nav 1.7 inhibitors are potentially useful in the treatment of a wide range of disorders, particularly pain.
Type:
Grant
Filed:
July 4, 2011
Date of Patent:
August 4, 2015
Assignee:
Pfizer Limited
Inventors:
Alan Daniel Brown, David James Rawson, Robert Ian Storer, Nigel Alan Swain