Patents by Inventor William A. Mitchell

William A. Mitchell 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).

  • Circuits and methods for eliminating reference spurs in fractional-N frequency synthesis
    Patent number: 9768790
    Abstract: Disclosed are circuits and method for reducing or eliminating reference spurs in frequency synthesizers. In some implementations, a phase-locked loop (PLL) such as a Frac-N PLL of a frequency synthesizer can include a phase frequency detector (PFD) configured to receive a reference signal and a feedback signal. The PFD can be configured to generate a first signal representative of a phase difference between the reference signal and the feedback signal. The PLL can further include a compensation circuit configured to generate a compensation signal based on the first signal. The PLL can further includes a voltage-controlled oscillator (VCO) configured to generate an output signal based on the compensation signal. The compensation signal can include at least one feature for substantially eliminating one or more reference spurs associated with the PLL.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: September 19, 2017
    Assignee: Skyworks Solutions, Inc.
    Inventors: Ardeshir Namdar-Mehdiabadi, Darren Roger Frenette, John William Mitchell Rogers
  • CIRCUITS, DEVICES AND METHODS FOR REDUCING CO-CHANNEL INTERFERENCE
    Publication number: 20170264251
    Abstract: Circuits, devices and methods are disclosed, including radio-frequency circuitry comprising a polar modulator configured to invert a sampled transmitted signal into an inverted sampled transmitted signal, a signal combiner configured to combine the inverted sampled transmitted signal with a received signal and a control logic circuit coupled to the polar modulator, the control logic circuit configured to adjust one or more tuning parameters of the polar modulator for inverting the sampled transmitted signal.
    Type: Application
    Filed: March 8, 2017
    Publication date: September 14, 2017
    Inventors: Mackenzie Brian COOK, John Jackson NISBET, John William Mitchell ROGERS
  • CONJUGATED POLYMERS
    Publication number: 20170260325
    Abstract: The invention relates to novel conjugated polymers containing one or more units based on dithieno[3,2-c;2?,3?-e]azepine-4,6-dione that is fused to further aromatic rings, to methods for their preparation and educts or intermediates used therein, to polymer blends, mixtures and formulations containing them, to the use of the polymers, polymer blends, mixtures and formulations as organic semiconductors in, or for the preparation of, organic electronic (OE) devices, especially organic photovoltaic (OPV) devices and organic photodetectors (OPD), and to OE, OPV and OPD devices comprising, or being prepared from, these polymers, polymer blends, mixtures or formulations.
    Type: Application
    Filed: August 12, 2015
    Publication date: September 14, 2017
    Applicants: Merck Patent GmbH, IMPERIAL INNOVATIONS LIMITED
    Inventors: Nicolas BLOUIN, William MITCHELL, Martin HEENEY, Jessica SHAW
  • TETRA-HETEROARYL INDACENODITHIOPHENE-BASED POLYCYCLIC POLYMERS AND THEIR USE
    Publication number: 20170210752
    Abstract: The present invention relates compounds comprising a tetra-heteroaryl indacenodithiophene-based structural unit, the synthesis of such compounds as well as their use in organic electronic devices. The invention further relates to organic electronic devices comprising such compounds.
    Type: Application
    Filed: June 26, 2015
    Publication date: July 27, 2017
    Applicant: Merck Patent GmbH
    Inventors: William MITCHELL, Mansoor D'LAVARI, Changsheng WANG, David SPARROWE
  • Conjugated polymers
    Patent number: 9695190
    Abstract: The invention relates to novel conjugated polymers containing one or more thieno[3,2-b]thiophene based polycyclic repeating units, to methods for their preparation and educts or intermediates used therein, to polymer blends, mixtures and formulations containing them, to the use of the polymers, polymer blends, mixtures and formulations as organic semiconductors in organic electronic (OE) devices, especially in organic photovoltaic (OPV) devices and organic photodetectors (OPD), and to OE, OPV and OPD devices comprising these polymers, polymer blends, mixtures or formulations.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: July 4, 2017
    Assignee: MERCK PATENT GMBH
    Inventors: William Mitchell, Mansoor D'Lavari, Changsheng Wang, Steven Tierney, David Sparrowe
  • INTEGRALLY FORMED GOOSENECK HITCH ASSEMBLY
    Publication number: 20170166268
    Abstract: A gooseneck hitch attachable to a cross member secured to a frame below a load bed of a vehicle, the cross member having a width is shown and described. The gooseneck hitch may include a beam selectively attachable to the cross member below the load bed and a rail monolithically formed with the beam and extending from the beam. The gooseneck hitch may also include a receptacle monolithically formed with the rail, where the receptacle is capable of selectively securing a hitch ball.
    Type: Application
    Filed: February 24, 2017
    Publication date: June 15, 2017
    Inventors: Richard W. McCoy, Jacob William Mitchell
  • VARIABLE CAPACITOR
    Publication number: 20170170822
    Abstract: A variable capacitor is disclosed, having a variable capacitance between a first node and a second node. The variable capacitor comprises a switch having a first terminal and a second terminal, the impedance between the first terminal and the second terminal being controllable via a control node. The variable capacitor further includes a first capacitor coupled between the first terminal and the first node, and a second capacitor coupled between the second terminal and the second node.
    Type: Application
    Filed: December 14, 2016
    Publication date: June 15, 2017
    Inventors: Mackenzie Brian COOK, John William Mitchell ROGERS
  • Conjugated polymers
    Patent number: 9676901
    Abstract: The invention relates to novel conjugated polymers containing one or more repeating units derived from indacenodibenzothiophene or dithia-dicyclopenta-dibenzothiophene, to methods for their preparation and educts or intermediates used therein, to polymer blends, mixtures and formulations containing them, to the use of the polymers, polymer blends, mixtures and formulations as organic semiconductors in organic electronic (OE) devices, especially in organic photovoltaic (OPV) devices and organic photodetectors (OPD), and to OE, OPV and OPD devices comprising these polymers, polymer blends, mixtures or formulations.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: June 13, 2017
    Assignee: MERCK PATENT GMBH
    Inventors: Mansoor D'Lavari, William Mitchell, Changsheng Wang, Steven Tierney, David Sparrowe
  • EXTENDED NON-LINEAR ACENE DERIVATIVES AND THEIR USE AS ORGANIC SEMICONDUCTORS
    Publication number: 20170162805
    Abstract: The invention relates to extended non-linear acene derivatives, methods of their preparation, their use as semiconductors in organic electronic (OE) devices, and OE devices comprising them.
    Type: Application
    Filed: June 3, 2015
    Publication date: June 8, 2017
    Applicant: MERCK PATENT GMBH
    Inventors: William MITCHELL, Mansoor D'LAVARI, Changsheng WANG, David SPARROWE
  • Conjugated polymers
    Patent number: 9673397
    Abstract: The invention relates to novel conjugated polymers containing one or more repeating units derived from indacenodibenzothiophene or dithia-dicyclopenta-dibenzothiophene, to methods for their preparation and educts or intermediates used therein, to polymer blends, mixtures and formulations containing them, to the use of the polymers, polymer blends, mixtures and formulations as organic semiconductors in organic electronic (OE) devices, especially in organic photovoltaic (OPV) devices, and to OE and OPV devices comprising these polymers, polymer blends, mixtures or formulations.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: June 6, 2017
    Assignee: Merck Patent GmbH
    Inventors: William Mitchell, Mansoor D'Lavari, Changsheng Wang, Steven Tierney, Jingyao Song
  • CASCODE POWER AMPLIFIER WITH SWITCHABLE OUTPUT MATCHING NETWORK
    Publication number: 20170149390
    Abstract: A radio-frequency (RF) module includes a first transistor having a base, a collector, and an emitter, a radio-frequency output transmit path coupled to the collector of the first transistor at a first end and to a radio-frequency output port at a second end, and an output matching network disposed in the radio-frequency output transmit path, the output matching network including a shunt arm coupled to ground, the shunt arm including a switch that is controllable to modify an impedance of the output matching network.
    Type: Application
    Filed: November 23, 2016
    Publication date: May 25, 2017
    Inventors: John William Mitchell ROGERS, Gordon Glen RABJOHN, John Jackson NISBET
  • TETRA-ARYL INDACENODITHIOPHENE-BASED POLYCYCLIC POLYMERS AND THEIR USE
    Publication number: 20170141317
    Abstract: The present invention relates to compounds comprising a tetra-aryl indacenodithiophene-based structural unit, the synthesis of such compounds as well as their use in organic electronic devices. The invention further relates to organic electronic devices comprising such compounds.
    Type: Application
    Filed: May 8, 2015
    Publication date: May 18, 2017
    Applicant: Merck Patent GmbH
    Inventors: William MITCHELL, Mansoor D'LAVARI, Changsheng WANG, David SPARROWE
  • Certain kynurenine-3-monooxygenase inhibitors, pharmaceutical compositions, and methods of use thereof
    Patent number: 9649310
    Abstract: Certain chemical entities are provided herein. Also provided are pharmaceutical compositions comprising at least one chemical entity and one or more pharmaceutically acceptable vehicle. Methods of treating patients suffering from certain diseases and disorders responsive to the inhibition of KMO activity are described, which comprise administering to such patients an amount of at least one chemical entity effective to reduce signs or symptoms of the disease or disorder are disclosed. These diseases include neurodegenerative disorders such as Huntington's disease. Also described are methods of treatment include administering at least one chemical entity as a single active agent or administering at least one chemical entity in combination with one or more other therapeutic agents. Also provided are methods for screening compounds capable of inhibiting KMO activity.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: May 16, 2017
    Assignee: CHDI Foundation, Inc.
    Inventors: Celia Dominguez, Leticia M. Toledo-Sherman, Stephen Martin Courtney, Michael Prime, William Mitchell, Christopher John Brown, Paula C. De Aguiar Pena, Peter Johnson
  • DISTORTION CORRECTION IN CASCODE POWER AMPLIFIERS
    Publication number: 20170133988
    Abstract: A radio-frequency (RF) module includes a driver transistor having a base, collector and emitter, an RF input port coupled to the base of the driver transistor, a cascode transistor having a base, collector and emitter, the emitter of the cascode transistor being coupled to the collector of the driver transistor, an RF output port coupled to the collector of the cascode transistor, and a coupling path connecting the base of the cascode transistor to the emitter of the cascode transistor, the coupling path including a capacitor.
    Type: Application
    Filed: November 3, 2016
    Publication date: May 11, 2017
    Inventor: John William Mitchell ROGERS
  • ORGANIC SEMICONDUCTING COMPOUNDS
    Publication number: 20170117477
    Abstract: The invention relates to novel organic semiconducting compounds, which are small molecules or conjugated polymers, containing one or more fluorinated polycyclic units, to methods for their preparation and educts or intermediates used therein, to compositions, polymer blends and formulations containing them, to the use of the compounds, compositions and polymer blends as organic semiconductors in, or for the preparation of, organic electronic (OE) devices, especially organic photovoltaic (OPV) devices, organic photodetectors (OPD), organic field effect transistors (OFET) and organic light emitting diodes (OLED), and to OE, OPV, OPD, OFET and OLED devices comprising these compounds, compositions or polymer blends.
    Type: Application
    Filed: March 17, 2015
    Publication date: April 27, 2017
    Applicant: Merck Patent GmbH
    Inventors: Mansoor D'LAVARI, William MITCHELL, Changsheng WANG, David SPARROWE
  • HYBRID AMPLIFIER AND SIGNAL COMBINER
    Publication number: 20170111065
    Abstract: A radio-frequency module comprises a low-noise amplifier including a common source transistor having a gate node that receives a radio-frequency input signal and a drain node that transmits a combined radio-frequency output signal, and a correction signal input path configured to receive a correction signal and provide the correction signal to a source node of the common source transistor to generate, at least in part, the combined radio-frequency output signal.
    Type: Application
    Filed: October 4, 2016
    Publication date: April 20, 2017
    Inventors: Mackenzie Brian COOK, John William Mitchell ROGERS
  • Organic semiconducting polymers
    Patent number: 9620716
    Abstract: The invention relates to novel organic semiconducting polymers containing one or more monomers derived from s-indacene fused symmetrically on each terminus with dithieno[3,2-b;2?,3?-d]thiophene (IDDTT), cyclopenta[2,1-b;3,4-b?]dithiophene (IDCDT), or derivatives thereof, to methods for their preparation and educts or intermediates used therein, to polymer blends, mixtures and formulations containing them, to the use of the polymers, polymer blends, mixtures and formulations as semiconductors in organic electronic (OE) devices, especially in organic photovoltaic (OPV) devices and organic photodetectors (OPD), and to OE, OPV and OPD devices comprising these polymers, polymer blends, mixtures or formulations.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: April 11, 2017
    Assignee: MERCK PATENT GMBH
    Inventors: Changsheng Wang, William Mitchell, Nicolas Blouin, Jingyao Song, Mansoor D'Lavari, Steven Tierney
  • Integrally formed gooseneck hitch assembly
    Patent number: 9610813
    Abstract: A gooseneck hitch attachable to a cross member secured to a frame below a load bed of a vehicle, the cross member having a width is shown and described. The gooseneck hitch may include a beam selectively attachable to the cross member below the load bed and a rail monolithically formed with the beam and extending from the beam. The gooseneck hitch may also include a receptacle monolithically formed with the rail, where the receptacle is capable of selectively securing a hitch ball.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: April 4, 2017
    Assignee: CEQUENT PERFORMANCE PRODUCTS, INC.
    Inventors: Richard W. McCoy, Jacob William Mitchell
  • ORGANIC SEMICONDUCTING COMPOUNDS
    Publication number: 20170084839
    Abstract: The invention relates to novel organic semiconducting compounds, which are small molecules or conjugated polymers, containing one or more isoindigo or thienoisoindigo based polycyclic units, to methods for their preparation and educts or intermediates used therein, to compositions, polymer blends and formulations containing them, to the use of the compounds, compositions and polymer blends as organic semiconductors in, or for the preparation of, organic electronic (OE) devices, especially organic photovoltaic (OPV) devices, organic photodetectors (OPD), Perovskite based solar cells, organic field effect transistors (OFET) and organic light emitting diodes (OLED), and to OE, OPV, OPD, OFET and OLED devices comprising these compounds, compositions or polymer blends.
    Type: Application
    Filed: February 12, 2015
    Publication date: March 23, 2017
    Applicant: MERCK PATENT GMBH
    Inventors: Lana NANSON, Nicolas BLOUIN, William MITCHELL
  • Conjugated polymers
    Patent number: 9590178
    Abstract: The invention relates to novel polymers containing one or more 4,8-dioxycarbonylalkyl-benzo[1,2-b:4,5-b?]dithiophene repeating units or their thioester derivatives, methods for their preparation and monomers used therein, blends, mixtures and formulations containing them, the use of the polymers, blends, mixtures and formulations as semiconductor in organic electronic (OE) devices, especially in organic photovoltaic (OPV) devices, and to OE and OPV devices comprising these polymers, blends, mixtures or formulations.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: March 7, 2017
    Assignee: MERCK PATENT GMBH
    Inventors: William Mitchell, Nicolas Blouin, Amy Phillips, Steven Tierney, Miguel Carrasco-Orozco, Toby Cull