Patents by Inventor Mark Johnston

Mark Johnston 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: 20190250574
    Abstract: A multi-channel control system includes at least a primary control microprocessor and a back-up control microprocessor operable to control a device. The primary control microprocessor and the back-up control microprocessor assert control over a controlled device according to a locally stored method of controlling a back-up microprocessor assumption of control of a device.
    Type: Application
    Filed: April 26, 2019
    Publication date: August 15, 2019
    Inventors: Jeffry K. Kamenetz, James A. Gosse, Joseph T. Gostkowski, Richard L. Bue, Mark A. Johnston, James Peter Wivell
  • Patent number: 10292753
    Abstract: An electrosurgical generator includes a radio frequency output stage, a sensor for sensing current, and an active lead. The radio frequency output stage is configured to output at least one radio frequency waveform. The sensor includes a current sensor coil including an outer coil including an opening therethrough and an inner coil coupled to and disposed within the outer coil. The active lead is coupled to the radio frequency output stage and passes through the current sensor coil opening. The current sensor coil is configured to output a first signal indicative of a current within the active lead.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: May 21, 2019
    Assignee: COVIDIEN LP
    Inventors: Dean C. Buck, Edward L. Brannan, Mark A. Johnston
  • Patent number: 10281496
    Abstract: A sensor for sensing current includes a current sensor coil and at least one active lead and at least one return lead. The current sensor coil includes an outer coil and an inner coil coupled to and disposed within the outer coil. The at least one active lead and the at least one return lead pass through the current sensor coil opening. The current sensor coil is configured to output a differential signal indicative of a current within the at least one active lead and the at least one return lead.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: May 7, 2019
    Assignee: COVIDIEN LP
    Inventors: Dean C. Buck, Edward L. Brannan, Mark A. Johnston
  • Patent number: 10278764
    Abstract: An electrosurgical generator includes a radio frequency output stage, a sensor for sensing current, and an active lead. The radio frequency output stage is configured to output at least one radio frequency waveform. The sensor includes a current sensor coil including an outer coil including an opening therethrough and an inner coil coupled to and disposed within the outer coil. The active lead is coupled to the radio frequency output stage and passes through the current sensor coil opening. The current sensor coil is configured to output a first signal indicative of a current within the active lead.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: May 7, 2019
    Assignee: COVIDIEN LP
    Inventors: Dean C. Buck, Edward L. Brannan, Mark A. Johnston
  • Patent number: 10270379
    Abstract: A method and apparatus for quasi-sensorless adaptive control of a high rotor pole switched-reluctance motor (HRSRM). The method comprises the steps of: applying a voltage pulse to an inactive phase winding and measuring current response in each inactive winding. Motor index pulses are used for speed calculation and to establish a time base. Slope of the current is continuously monitored which allows the shaft speed to be updated multiple times and to track any change in speed and fix the dwell angle based on the shaft speed. The apparatus for quasi-sensorless control of a high rotor pole switched-reluctance motor (HRSRM) comprises a switched-reluctance motor having a stator and a rotor, a three-phase inverter controlled by a processor connected to the switched-reluctance motor, a load and a converter.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: April 23, 2019
    Assignee: Software Motor Company
    Inventors: Trevor A. Creary, Mahesh Krishnamurthy, Piyush C. Desai, Mark Johnston, Timothy Knodel
  • Publication number: 20190037843
    Abstract: The invention relates to a compound of Formula (I), wherein n is 0 or 1, R1 is H or CH3 and R2 is a linear (C3-C6)alkyl and an insecticide composition comprising at least one insecticide active ingredient and at least one a compound of Formula (I).
    Type: Application
    Filed: September 7, 2016
    Publication date: February 7, 2019
    Applicants: Endura SPA, Endura SPA, AGCHEM ACCESS LTD, AGCHEM ACCESS LTD
    Inventors: Graham David Moores, Silvia Carloni, Francesco Tozzi, Elisa Capparella, Valerio Borzatta, János Szilágyi, László Barnabás Takács, József Schmidt, Mark Johnston
  • Publication number: 20190037845
    Abstract: The present invention relates to a pesticide composition comprising at least one pesticidal active ingredient and at least one methylendioxyphenyl derivative compound of Formula (I), wherein R1 is a linear (C4-C6)alkyl.
    Type: Application
    Filed: September 7, 2016
    Publication date: February 7, 2019
    Applicants: Endura SPA, AGCHEM ACCESS LTD
    Inventors: Valerio Borzatta, Elisa Capparella, Francesco Tozzi, Graham David Moores, János Szilágyi, László Barnabás Takács, József Schmidt, Mark Johnston
  • Publication number: 20180367078
    Abstract: A method and apparatus for quasi-sensorless adaptive control of a high rotor pole switched-reluctance motor (HRSRM). The method comprises the steps of: applying a voltage pulse to an inactive phase winding and measuring current response in each inactive winding. Motor index pulses are used for speed calculation and to establish a time base. Slope of the current is continuously monitored which allows the shaft speed to be updated multiple times and to track any change in speed and fix the dwell angle based on the shaft speed. The apparatus for quasi-sensorless control of a high rotor pole switched-reluctance motor (HRSRM) comprises a switched-reluctance motor having a stator and a rotor, a three-phase inverter controlled by a processor connected to the switched-reluctance motor, a load and a converter.
    Type: Application
    Filed: October 18, 2017
    Publication date: December 20, 2018
    Inventors: Trevor A. Creary, Mahesh Krishnamurthy, Piyush C. Desai, Mark Johnston, Timothy Knodel
  • Publication number: 20180305327
    Abstract: The invention relates to a substituted dihydrobenzofuran compound of Formula (I), wherein R1 is a linear (C3-C6)alkyl and an insecticide composition comprising at least one insecticide active ingredient and at least one a compound of Formula (I).
    Type: Application
    Filed: September 7, 2016
    Publication date: October 25, 2018
    Applicants: Endura SPA, AGCHEM ACCESS LTD
    Inventors: Valerio Borzatta, Silvia Carloni, Elisa Capparella, Graham David Moores, János Szilágyi, László Barnabás Takács, József Schmidt, Mark Johnston
  • Publication number: 20180301967
    Abstract: A high rotor pole switched reluctance machine (HRSRM) employs an axial and radial mirroring concept and is represented by a first Multiple Rotor Pole (MRP) formula and second Multiple Stator Pole (MSP) formula. A multiple rotor HRSRM comprises at least two rotors each having a plurality of rotor poles and at least two stators having a plurality of stator poles. The at least two rotors and the at least two stators are positioned about a central axis with the stator placed between the rotors. In other embodiments, the number of stators equals the number of rotors and effectively operate as a single stator and rotor. In yet another embodiment, the effective single stator and rotor type high rotor pole switched reluctance machine is realized as single stator and rotor positioned concentrically around a central axis.
    Type: Application
    Filed: June 18, 2018
    Publication date: October 18, 2018
    Inventors: Mahesh Krishnamurthy, Mark Johnston, Trevor Creary, Piyush Desai
  • Publication number: 20180191230
    Abstract: A high rotor pole switched reluctance machine (HRSRM) employs an axial and radial mirroring concept and is represented by a first Multiple Rotor Pole (MRP) formula and second Multiple Stator Pole (MSP) formula. A multiple rotor HRSRM comprises at least two rotors each having a plurality of rotor poles and at least two stators having a plurality of stator poles. The at least two rotors and the at least two stators are positioned about a central axis with the stator placed between the rotors. In other embodiments, the number of stators equals the number of rotors and effectively operate as a single stator and rotor. In yet another embodiment, the effective single stator and rotor type high rotor pole switched reluctance machine is realized as single stator and rotor positioned concentrically around a central axis.
    Type: Application
    Filed: March 4, 2018
    Publication date: July 5, 2018
    Inventors: Mahesh Krishnamurthy, Mark Johnston, Trevor Creary, Piyush Desai
  • Patent number: 9960662
    Abstract: A high rotor pole switched reluctance machine (HRSRM) employs an axial and radial mirroring concept and is represented by a first Multiple Rotor Pole (MRP) formula and second Multiple Stator Pole (MSP) formula. A multiple rotor HRSRM comprises at least two rotors each having a plurality of rotor poles and at least one stator having a plurality of stator poles. The at least two rotors and the at least one stator are positioned about a central axis with the stator placed between, and laterally adjacent to the rotors. A multiple stator HRSRM comprises at least two stators having a plurality of stator poles and at least one rotor having a plurality of rotor poles. The at least two stators and at least one rotor are positioned about a central axis with the rotor placed between and laterally adjacent to the stators.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: May 1, 2018
    Assignee: Software Motor Company
    Inventors: Mahesh Krishnamurthy, Mark Johnston, Trevor Creary, Piyush Desai
  • Patent number: 9839469
    Abstract: An electrosurgical generator is presented including a radio frequency (RF) amplifier coupled to an electrical energy source and configured to generate electrosurgical energy, the RF amplifier including an inverter configured to convert a direct current (DC) to an alternating current (AC), and a plurality of sensors configured to sense voltage and current of the generated electrosurgical energy. The electrosurgical generator further includes a controller coupled to the RF amplifier and the plurality of sensors. The electrosurgical may be further configured to determine a power level based on the sensed voltage and the sensed current, determine an efficiency of the electrosurgical generator, and insert a predetermined integer number of off cycles when the efficiency of the electrosurgical generator reaches a threshold power efficiency.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: December 12, 2017
    Assignee: COVIDIEN LP
    Inventors: James A. Gilbert, Mark A. Johnston, Aaron Mattmiller, Joshua H. Johnson
  • Publication number: 20170351233
    Abstract: A multi-channel control system includes at least a primary control microprocessor and a back-up control microprocessor operable to control a device. The primary control microprocessor and the back-up control microprocessor assert control over a controlled device according to a locally stored method of controlling a back-up microprocessor assumption of control of a device.
    Type: Application
    Filed: August 22, 2017
    Publication date: December 7, 2017
    Inventors: Jeffry K. Kamenetz, James A. Gosse, Joseph T. Gostkowski, Richard L. Bue, Mark A. Johnston, James Peter Wivell
  • Patent number: 9825935
    Abstract: Embodiments of the present disclosure disclose gateway facilitating document transactions and related methods. Specifically, the disclosure discloses a gateway facilitating document transactions within a third party workflow. The gateway includes a front-end module and a controller. The front-end module is configured for providing one or more interfaces to a user to perform a document transaction, the one or more interfaces being configured for allowing the user to login into a document banking account of the user; displaying one or more documents available in the document banking account of the user; and allowing the user to select one or more documents for the transaction.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: November 21, 2017
    Assignee: Conduent Business Services, LLC
    Inventors: Atul Singh, Anirban Mondal, Kovendhan Ponnavaikko, Deepthi Chander, Koustuv Dasgupta, Nischal Murthy Piratla, Mark Johnston
  • Publication number: 20170312005
    Abstract: An electrosurgical generator includes: a power supply configured to output a DC waveform; an inverter coupled to the power supply, the inverter including a plurality of switching elements; and a controller coupled to the inverter and configured to generate a switching angle waveform including a plurality of switching pulses. The controller is further configured to at least one of select or calculate the plurality of switching pulses to activate the plurality of switching elements to generate a radio frequency waveform based on the DC waveform and to minimize harmonics of the radio frequency waveform.
    Type: Application
    Filed: May 2, 2016
    Publication date: November 2, 2017
    Inventors: DANIEL A. FRIEDRICHS, MARK A. JOHNSTON, DANIEL J. COSTINETT, BRADFORD C. TRENTO, CHONGWEN ZHAO
  • Patent number: 9772615
    Abstract: A multi-channel control system includes at least a primary control microprocessor and a back-up control microprocessor operable to control a device. The primary control microprocessor and the back-up control microprocessor assert control over a controlled device according to a locally stored method of controlling a back-up microprocessor assumption of control of a device.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: September 26, 2017
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Jeffry K. Kamenetz, James A. Gosse, Joseph T. Gostkowski, Richard L. Bue, Mark A. Johnston, James Peter Wivell
  • Patent number: 9770283
    Abstract: A method of improving efficiency of an electrosurgical generator is presented, the method including controlling an output of an electrosurgical generator by converting a direct current (DC) to an alternating current (AC) using an inverter, and sensing a current and a voltage at an output of the inverter. The method further includes the steps of determining a power level based on the sensed voltage and the sensed current, determining an efficiency of the electrosurgical generator, and inserting a predetermined integer number of off cycles when the efficiency of the electrosurgical generator reaches a threshold power efficiency.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: September 26, 2017
    Assignee: COVIDIEN LP
    Inventors: James A. Gilbert, Mark A. Johnston, Aaron Mattmiller, Joshua H. Johnson
  • Patent number: 9625894
    Abstract: A multi-channel control system includes a first primary control microprocessor and a second primary control microprocessor operable to control a device, and a first secondary control microprocessor and a second secondary control microprocessor operable to control the device. Each of the first and second primary control microprocessors and the first and second secondary control microprocessors are arranged as an independent control channel.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: April 18, 2017
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Jeffry K. Kamenetz, Mark A. Johnston, Edward John Marotta, Cathleen R. Bleier, John M. O'Neil
  • Publication number: 20170007313
    Abstract: The present disclosure relates to planar transformers including a plurality of circuit layers that are configured to reduce termination losses on at least one of the plurality of circuit layers. The plurality of circuit layers are stacked together in a first direction and include at least first and second circuit layers. The first and second circuit layers each include an electrically conductive trace forming at least one winding having a first termination portion and a second termination portion that are separated by a gap. The gaps of the first and second circuit layers are offset relative to each other in a second direction different from the first direction. The plurality of circuit layers may further include a third circuit layer, which includes an electrically conductive trace having a grounded portion that is disposed adjacent to at least one of the gaps of the first and second circuit layers.
    Type: Application
    Filed: September 20, 2016
    Publication date: January 12, 2017
    Inventor: MARK A. JOHNSTON