Patents by Inventor Michael J. A. Walker

Michael J. A. Walker 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: 7259184
    Abstract: Ion channel modulating compounds are disclosed. The compounds of the present invention may be incorporated in compositions and kits. The present invention also discloses a variety of in vitro and in vivo uses for the compounds and compositions, including the treatment of arrhythmia and the production of analgesia and local anesthesia.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: August 21, 2007
    Assignee: Cardiome Pharma Corp.
    Inventors: Gregory N Beatch, Bertrand M C Plouvier, Tao Sheng, Michael J A Walker, Richard A Wall, Sandro L Yong, Jeff Jiqun Zhu, Alexander B Zolotoy
  • Patent number: 7101877
    Abstract: Ion channel modulating compounds are disclosed. The compounds of the present invention may be incorporated in compositions and kits. The present invention also discloses a variety of in vitro and in vivo uses for the compounds and compositions, including the treatment of arrhythmia and the production of analgesia and local anesthesia.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: September 5, 2006
    Assignee: Cardiome Pharma Corp.
    Inventors: Allen I Bain, Gregory N Beatch, Cindy J Longley, Bertrand M C Plouvier, Tao Sheng, Michael J. A. Walker, Richard A. Wall, Sandro L Yong, Jeff Jiqun Zhu, Alexander B Zolotoy
  • Patent number: 7057053
    Abstract: Ion channel modulating compounds are disclosed. The compounds of the present invention may be incorporated in compositions and kits. The present invention also discloses a variety of in vitro and in vivo uses for the compounds and compositions, including the treatment of arrhythmia and the production of analgesia and local anesthesia.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: June 6, 2006
    Assignee: Cardiome Pharma Corp.
    Inventors: Gregory N. Beatch, Bertrand M. C. Plouvier, Tao Sheng, Michael J. A. Walker, Richard A. Wall, Sandro L. Yong, Jeff Jiqun Zhu, Alexander B. Zolotoy
  • Patent number: 7053087
    Abstract: Aminocycloalkyl cinnamide compounds (I) are disclosed. The compounds of the present invention may be incorporated in compositions and kits. The present invention also discloses a variety of in vitro and in vivo uses for the compounds and compositions, including the treatment of arrhythmia and the production of local analgesia and anesthesia. n=1–4; R1, R2, R3, R4, R5, R13, X and A are as in claim (1).
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: May 30, 2006
    Assignee: Cardiome Pharma Corp.
    Inventors: Gregory N. Beatch, Cindy J. Longley, Michael J. A. Walker, Richard A. Wall
  • Patent number: 6979685
    Abstract: Aminocycloalkyl compounds are disclosed. The compounds of the present invention may be incorporated in compositions and kits. The present invention also discloses a variety of in vitro and in vivo uses for the compounds and compositions, including the treatment of arrhythmia and the production of local analgesia and anesthesia.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: December 27, 2005
    Assignee: Cardiome Pharma Corp.
    Inventors: Gregory N. Beatch, Bertrand M. C. Plouvier, Michael J. A. Walker, Richard A. Wall, Alexander B. Zolotoy
  • Patent number: 6174879
    Abstract: Aminocyclohexylester compounds, including thioesters, are disclosed. The compounds of the present invention may be incorporated in compositions and kits. The present invention also discloses a variety of in vitro and in vivo uses for the compounds and compositions, including the blockade of ion channels and the treatment of arrhythmias.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: January 16, 2001
    Assignee: University of British Columbia
    Inventors: Bernard A. MacLeod, Michael J. A. Walker, Richard A. Wall
  • Patent number: 5885984
    Abstract: Aminocyclohexylester compounds, including thioesters, are disclosed. The compounds of the present invention may be incorporated in compositions and kits. The present invention also discloses a variety of in vitro and in vivo uses for the compounds and compositions, including the blockade of ion channels and the treatment of arrhythmias.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: March 23, 1999
    Assignee: University of British Columbia
    Inventors: Bernard A. MacLeod, Michael J. A. Walker, Richard A. Wall
  • Patent number: 5637583
    Abstract: Aminocyclohexylester compounds, including thioesters, are disclosed. The compounds of the present invention may be incorporated in compositions and kits. The present invention also discloses a variety of in vitro and in vivo uses for the compounds and compositions, including the blockade of ion channels and the treatment of arrhythmias.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: June 10, 1997
    Assignee: University of British Columbia
    Inventors: Bernard A. MacLeod, Michael J. A. Walker, Richard A. Wall
  • Patent number: 5506257
    Abstract: The present invention provides methods for blocking sodium channels in cardiac or neuronal tissue using aminocyclohexylamides. This invention also provides kits including aminocyclohexylamides and instructions for the use of the compounds for the treatment of arrhythmia or for the inducement of local anaesthesia.
    Type: Grant
    Filed: February 15, 1994
    Date of Patent: April 9, 1996
    Assignee: University of British Columbia
    Inventors: Bernard A. MacLeod, Michael J. A. Walker, Richard A. Wall
  • Patent number: 5437602
    Abstract: A flexible isolator bag used to isolate a controlled therapeutic gas atmosphere about a human limb for the management and treatment of wounds and lesions, or an amputation, has a discharge port and a flexible manifold section providing an intake manifold which has an infeed port and inlet openings to the interior of the bag. A self-sealing zipper extends along part of the length of the bag. The bag is secured to the patient by adhesive tape applied to the rim of the open end of the bag. This rim is shaped to prevent a tourniquet effect.
    Type: Grant
    Filed: August 13, 1993
    Date of Patent: August 1, 1995
    Assignee: ATM Wound Management, Inc.
    Inventors: Gregory M. Polyakov, James I. Symons, Allen I. Bain, Michael J. A. Walker
  • Patent number: 5236599
    Abstract: Acid water containing toxic levels (>0.1 ppm) of aluminum is treated to dissolve therein both silicate ions in an amount to create a solution containing at least 40, preferably at least 100, micromoles per liter of silicon and a silicon:aluminum ratio (based on metals) of at least about 6:1 and preferably 10:1 in the water to form a non-toxic complex with aluminum and alkali or alkali metal ions to increase the pH of the water. The preferred treatment agent is a hydraulic calcium silicate, in the form of cement clinker, optionally silicate-enriched with a soluble silicate.
    Type: Grant
    Filed: June 4, 1992
    Date of Patent: August 17, 1993
    Assignee: Imperial Chemical Industries PLC
    Inventors: James D. Birchall, Michael J. Walker
  • Patent number: 5102571
    Abstract: A bleach formulation comprising an aqueous solution/suspension of sodium perborate tetrahydrate (preferably "fines") and a thickening agent and optionally and preferably one or more other ingredients of conventional detergent compositions, notably an aqueous sodium silicate solution.
    Type: Grant
    Filed: November 9, 1989
    Date of Patent: April 7, 1992
    Assignee: Imperial Chemical Industries PLC
    Inventors: James E. Mole, Michael J. Walker
  • Patent number: 4748382
    Abstract: An electric circuit arrangement for use in energising a flash tube (3) to provide a series of pairs of flashes, each pair consisting of a main flash and a rapidly following second flash, includes first and second capacitors (C9, C10) which are controlled to effect discharge of first only the first capacitor (C9) and then both the first and second capacitors (C9, C10) across the flash tube (3), cyclically, to provide the two flashes of each pair, in series. By varying the relative values of the first and second capacitors (C9, C10) the time interval between the flashes of each pair can be varied. All flashes produced can have the same peak intensity while the flashes in each pair can have different energy contents.
    Type: Grant
    Filed: September 25, 1986
    Date of Patent: May 31, 1988
    Assignee: Lullas Industries Public Limited Company
    Inventor: Michael J. Walker
  • Patent number: 4570247
    Abstract: A motion detector system includes an ultrasonic transmitter, receiver and phase detector which produces as output signals of frequency related to the speed of movement of any moving object in a zone being monitored. The output of the phase detector is fed to two separate bandpass filters having different pass-bands characteristic of the frequencies generated by a human being moving in the zone being monitored. A warning is sounded only when signals have been present in both bands for more than a predetermined period.
    Type: Grant
    Filed: November 18, 1983
    Date of Patent: February 11, 1986
    Assignee: Lucas Industries Ltd.
    Inventors: Michael J. Walker, Jeffry A. Bagnall
  • Patent number: 4370618
    Abstract: A circuit for recognizing cyclically occurring pulse sequences includes a counter controlled by a D-type flip-flop circuit to start counting the pulses in the pulse sequence when a specific pulse event occurs. The output of the counter is compared by a comparator with a preset number to provide an output via a gate if the specific pulse event occurs when the number of pulses counted by the counter is equal to the preset number. If the count rises above the preset number the comparator resets the flip-flop and no output is produced by the gate.
    Type: Grant
    Filed: May 21, 1980
    Date of Patent: January 25, 1983
    Assignee: Lucas Industries Limited
    Inventor: Michael J. Walker
  • Patent number: 4345209
    Abstract: A missing pulse detector includes a plurality of signal accumulation capacitors which are discharged periodically and then charged via resistor during the periods between pulses in the input pulse train at an input terminal. The voltage signals on the capacitors are compared by comparators the resistors being of values such that the comparator outputs are high (at the comparison time) unless a pulse is missed.
    Type: Grant
    Filed: May 21, 1980
    Date of Patent: August 17, 1982
    Assignee: Lucas Industries Limited
    Inventor: Michael J. Walker
  • Patent number: 4333054
    Abstract: An apparatus for testing an i.c.e. ignition system of the kind including an ignition coil and a semi-conductor switch means controlling current interruption in the coil primary, includes a voltage comparator connected to compare the voltage across the switch means with a predetermined voltage. The comparator output starts a monostable timer circuit, the output of which is gated with the output of the comparator to produce an output signal only if the voltage across the switch means falls below the predetermined voltage within a predetermined time duration.
    Type: Grant
    Filed: May 21, 1980
    Date of Patent: June 1, 1982
    Assignee: Lucas Industries Limited
    Inventor: Michael J. Walker
  • Patent number: 4331922
    Abstract: A test apparatus for testing internal combustion engine spark ignition systems includes input terminals for connection across the electronic switch of the ignition system under test. A plurality of comparators are connected to compare the voltage across the input terminals with different reference levels and the comparator outputs are connected via peak storage circuits to a logic circuit which drives indicators indicating various fault conditions.
    Type: Grant
    Filed: May 21, 1980
    Date of Patent: May 25, 1982
    Assignee: Lucas Industries Limited
    Inventor: Michael J. Walker
  • Patent number: 4331921
    Abstract: A test apparatus for testing electronic ignition systems includes a circuit for detecting the interruption of ignition coil primary current and triggering a 100 .mu.S monostable. A coil current detector detects when coil current flow is recommenced and the signals from this detector and the monostable are combined via a gate to indicate satisfactory operation if the detector detects current re-commencement within 100 .mu.S of the previous current interruption.
    Type: Grant
    Filed: May 21, 1980
    Date of Patent: May 25, 1982
    Assignee: Lucas Industries Limited
    Inventor: Michael J. Walker