Patents by Inventor Robert McKenzie

Robert McKenzie 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: 10538523
    Abstract: The present invention relates to pyrazolopyridazine derivatives. More particularly, it relates to 4-(biphenyl-3-yl)-1H-pyrazolo[3,4-c]pyridazine derivatives of formula (I), and pharmaceutically acceptable salts thereof, wherein X, R1, R2, R3, R4 and R5 are as defined in the description. The pyrazolopyridazine derivatives of the present invention modulate the activity of the GABAA receptor. They may useful in the treatment of a number of conditions, including pain and epilepsy.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: January 21, 2020
    Assignee: PFIZER LIMITED
    Inventors: Kevin Neil Dack, Robert McKenzie Owen, David Cameron Pryde
  • Publication number: 20180346470
    Abstract: The present invention relates to pyrazolopyridazine derivatives. More particularly, it relates to 4-(biphenyl-3-yl)-1H-pyrazolo[3,4-c]pyridazine derivatives of formula (I), and pharmaceutically acceptable salts thereof, wherein X, R1, R2, R3, R4 and R5 are as defined in the description. The pyrazolopyridazine derivatives of the present invention modulate the activity of the GABAA receptor. They may useful in the treatment of a number of conditions, including pain and epilepsy.
    Type: Application
    Filed: November 22, 2016
    Publication date: December 6, 2018
    Applicant: PFIZER LIMITED
    Inventors: KEVIN NEIL DACK, ROBERT MCKENZIE OWEN, DAVID CAMERON PRYDE
  • Patent number: 9802945
    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
  • Patent number: 9744489
    Abstract: A separator for a gas stream has a horizontal tank with a fluid inlet, a fluid outlet and a flow path along the inside of the horizontal tank. A flow barrier is disposed within the tank between the inlet and the outlet. One or more sets of liquid ports are in fluid communication with the tank and positioned at a bottom surface of the tank. Each set of liquid outlets has a first port and a second port. The first port is positioned upstream along the flow path relative to the second port. A fluid passage is in fluid communication with the first port and the second port. The fluid passage defines a secondary flow path adjacent to the horizontal tank, where the first port acts as a draft inlet to the secondary flow path and the second port acts as a draft outlet from the secondary flow path to the tank.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: August 29, 2017
    Inventor: Robert McKenzie
  • Publication number: 20170197965
    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
  • Patent number: 9610524
    Abstract: A separator for a wet gas stream has an upper section having an outer peripheral wall, a top, and a bottom perforated baffle. A cone-shaped baffle is positioned on the perforated bottom baffle and extending toward the inlet in the top of the upper section. A spiral baffle has a bottom edge adjacent to the cone-shaped baffle and a top edge adjacent to the top of the upper section. The spiral baffle defines a curved flow path between the inlet and the outlet of the upper portion. A vortex flow section is defined by the cone-shaped baffle and the outer peripheral wall. The vortex flow section is fed by the curved flow path defined by the cone-shaped baffle. A lower section is below the perforated baffle. The lower section has a gas outlet and a liquid outlet.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: April 4, 2017
    Inventor: Robert McKenzie
  • Publication number: 20160008751
    Abstract: A separator for a gas stream has a horizontal tank with a fluid inlet, a fluid outlet and a flow path along the inside of the horizontal tank. A flow barrier is disposed within the tank between the inlet and the outlet. One or more sets of liquid ports are in fluid communication with the tank and positioned at a bottom surface of the tank. Each set of liquid outlets has a first port and a second port. The first port is positioned upstream along the flow path relative to the second port. A fluid passage is in fluid communication with the first port and the second port. The fluid passage defines a secondary flow path adjacent to the horizontal tank, where the first port acts as a draft inlet to the secondary flow path and the second port acts as a draft outlet from the secondary flow path to the tank.
    Type: Application
    Filed: July 24, 2014
    Publication date: January 14, 2016
    Inventor: Robert McKENZIE
  • Publication number: 20160008752
    Abstract: There is provided a separator for a gas stream. The separator has a vertical tank having a side wail, a top and a bottom. The tank has an inlet, a gas outlet, and a liquid outlet, the liquid outlet being located at the bottom of the tank.
    Type: Application
    Filed: July 24, 2014
    Publication date: January 14, 2016
    Inventor: Robert McKENZIE
  • Publication number: 20150259352
    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 and R5 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: Application
    Filed: May 29, 2015
    Publication date: September 17, 2015
    Inventors: Kiyoyuki Omoto, Robert McKenzie Owen, David Cameron Pryde, Christine Ann Louise Watson, Mifune Takeuchi
  • Publication number: 20150259327
    Abstract: The present invention relates to new sulfonamide URAT-1 inhibitor compounds of formula (I) or a pharmaceutically acceptable salt thereof: to compositions containing them, to processes for their preparation and to intermediates used in such processes, and to methods of treatment, wherein R1, R2, R3, R4, R5 and R6 are as defined in the description.
    Type: Application
    Filed: May 27, 2015
    Publication date: September 17, 2015
    Applicant: PFIZER LIMITED
    Inventors: Robert Ian Storer, Nigel Alan Swain, Robert McKenzie Owen
  • Patent number: 9067922
    Abstract: The present invention relates to new sulfonamide URAT-1 inhibitor compounds of formula (I) or a pharmaceutically acceptable salt thereof: to compositions containing them, to processes for their preparation and to intermediates used in such processes, and to methods of treatment, wherein R1, R2, R3, R4, R5 and R6 are as defined in the description.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: June 30, 2015
    Assignee: Pfizer Limited
    Inventors: Robert Ian Storer, Nigel Alan Swain, Robert McKenzie Owen
  • Publication number: 20150105396
    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 and R5 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: Application
    Filed: December 19, 2014
    Publication date: April 16, 2015
    Inventors: Kiyoyuki Omoto, Robert McKenzie Owen, David Cameron Pryde, Christine Ann Louise Watson, Mifune Takeuchi
  • Patent number: 8952008
    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 and R5 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: December 12, 2013
    Date of Patent: February 10, 2015
    Assignee: Pfizer Limited
    Inventors: Kiyoyuki Omoto, Robert McKenzie Owen, David Cameron Pryde, Christine Ann Louise Watson, Mifune Takeuchi
  • Patent number: 8925978
    Abstract: An assembly may include a fitting, a first pipe, and a first seal. The fitting may include an annular body having a first insertion end and an inner diametrical surface having a first knurled portion disposed adjacent the first insertion end. The first pipe may include a first end portion that is received into the first insertion end of the body and an outer diametrical surface including knurls formed thereon. The knurls of the outer diametrical surface may engage the first knurled portion of the fitting. The first seal element may be disposed within the fitting and may sealingly engage the first pipe and the fitting body. The engagement between the inner diametrical surface of the fitting and the outer diametrical surface of the pipe may a press fit and/or an interference fit.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: January 6, 2015
    Assignee: Mueller Industries, Inc.
    Inventors: Tommy L. Jamison, Kevin Neil Young, Robert McKenzie, Marcus Robert Elmer
  • Publication number: 20140315933
    Abstract: The present invention relates to new sulfonamide URAT-1 inhibitor compounds of formula (I) or pharmaceutically acceptable salts thereof: to compositions containing them, to processes for their preparation and to intermediates used in such processes and to methods of treatment; wherein R1, R2, R3, R4, R5 and R6 are as defined in the description.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 23, 2014
    Applicant: PFIZER LIMITED
    Inventors: Robert McKenzie Owen, Robert Ian Storer
  • Publication number: 20140315878
    Abstract: The present invention relates to new sulfonamide URAT-1 inhibitor compounds of formula (I) or a pharmaceutically acceptable salt thereof: to compositions containing them, to processes for their preparation and to intermediates used in such processes, and to methods of treatment, wherein R1, R2, R3, R4, R5 and R6 are as defined in the description.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 23, 2014
    Applicant: PFIZER LIMITED
    Inventors: Robert Ian Storer, Nigel Alan Swain, Robert McKenzie Owen
  • Publication number: 20140171435
    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 and R5 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: Application
    Filed: December 12, 2013
    Publication date: June 19, 2014
    Applicant: Pfizer Limited
    Inventors: Kiyoyuki Omoto, Robert McKenzie Owen, David Cameron Pryde, Christine Ann Louise Watson, Mifune Takeuchi
  • Publication number: 20130255206
    Abstract: A separator for a wet gas stream has an upper section having an outer peripheral wall, a top, and a bottom perforated baffle. A cone-shaped baffle is positioned on the perforated bottom baffle and extending toward the inlet in the top of the upper section. A spiral baffle has a bottom edge adjacent to the cone-shaped baffle and a top edge adjacent to the top of the upper section. The spiral baffle defines a curved flow path between the inlet and the outlet of the upper portion. A vortex flow section is defined by the cone-shaped baffle and the outer peripheral wall. The vortex flow section is fed by the curved flow path defined by the cone-shaped baffle. A lower section is below the perforated baffle. The lower section has a gas outlet and a liquid outlet.
    Type: Application
    Filed: March 25, 2013
    Publication date: October 3, 2013
    Inventor: Robert McKenzie
  • Publication number: 20130255205
    Abstract: A separator for a wet gas stream has an upper conduit having an inlet, an outlet and an outer peripheral wall. A helical baffle is positioned within the upper conduit defining a helical flow path. The helical flow path generates a vortex in gas flowing through the upper conduit, such that liquids in the gas stream move toward the outer peripheral wall. A lower conduit has an input in axial alignment with the outlet of the upper conduit and an outlet. The input of the lower conduit and the output of the upper conduit are separated by a gap, such that liquids are ejected from the upper conduit without entering the lower conduit, and such that the gas stream within the upper conduit is transferred to the lower conduit.
    Type: Application
    Filed: March 25, 2013
    Publication date: October 3, 2013
    Inventor: Robert McKENZIE
  • Patent number: RE46819
    Abstract: A method of snap-shot data training to determine the optimum timing of the DQS enable signal in a single read operation is provided. This is accomplished by first writing a Gray code count sequence into the memory and then reading it back in a single burst. The controller samples the read burst at a fixed interval from the time the command was issued to determine the loop-around delay. A simple truth table lookup determines the optimum DQS enable timing for normal reads. Advantageously, during normal read operations, the first positive edge of the enabled DQS signal is used to sample a counter that is enabled every time a command is issued. If the counter sample changes, indicating timing drift has occurred, the DQS enable signal can be adjusted to compensate for the drift and maintain a position centered in the DQS preamble. This technique can also be applied to a system that uses the iterative approach to determining DQS enable timing on power up.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: May 1, 2018
    Assignee: Conversant Intellectual Property Management Inc.
    Inventors: Peter Gillingham, Robert McKenzie