Patents by Inventor William Mitchell

William 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).

  • Publication number: 20250107252
    Abstract: An optical receiver comprises a monolithically integrated photodiode (PD) and transimpedance amplifier (TIA). The TIA comprises InP heterojunction bipolar transistors (HBT) fabricated from a first plurality of layers of an epitaxial layer stack grown on a SI:InP substrate; the PD may be a pin PD fabricated from a second plurality of layers of the epitaxial layer stack, overlying the first plurality of layers. The p-contact of the PIN is directly connected to the input of the TIA to reduce PIN capacitance CPIN. The TIA capacitance CTIA may be matched to CPIN. The PD may be a vertical PIN with a top facet window or a waveguide PD with a lateral facet window. Device parameters comprising a device area, device capacitance CPIN+CTIA; and feedback resistance RF of the TIA are optimized to performance specifications comprising a specified sensitivity and responsivity at an operational wavelength. This design approach enables cost-effective fabrication of integrated PIN-TIA.
    Type: Application
    Filed: December 9, 2024
    Publication date: March 27, 2025
    Inventors: Lawrence E. TAROF, William A. HAGLEY, Gudmundur A. HJARTARSON, John William Mitchell ROGERS
  • Patent number: 12218157
    Abstract: An optical receiver comprises a monolithically integrated pin photodiode (PIN) and transimpedance amplifier (TIA). The TIA comprises InP heterojunction bipolar transistors (HBT) fabricated from a first plurality of layers of an epitaxial layer stack grown on a SI:InP substrate; the PIN is fabricated from a second plurality of layers of the epitaxial layer stack. The p-contact of the PIN is directly connected to the input of the TIA to reduce PIN capacitance CPIN. The TIA capacitance CTIA may be matched to CPIN. Device parameters comprising: a thickness of the absorption layer, window area, and an optional mirror thickness of the PIN; device capacitance CPIN+CTIA; and feedback resistance RF of the TIA; are optimized to performance specifications comprising a specified sensitivity and responsivity at an operational wavelength. This design approach enables cost-effective fabrication an integrated PIN-TIA, for applications such as a 1577 nm receiver for an ONU for 10G-PON.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: February 4, 2025
    Assignee: ElectroPhotonic-IC Inc.
    Inventors: Lawrence E. Tarof, William A. Hagley, Gudmundur A. Hjartarson, John William Mitchell Rogers
  • Patent number: 12193317
    Abstract: The invention relates to novel organic semiconducting compounds containing a polycyclic unit, 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, perovskite-based solar cell (PSC) devices, organic photodetectors (OPD), organic field effect transistors (OFET) and organic light emitting diodes (OLED), and to OE, OPV, PSC, OPD, OFET and OLED devices comprising these compounds, compositions or polymer blends.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: January 7, 2025
    Assignee: FLEXENABLE TECHNOLOGY LIMITED
    Inventors: Changsheng Wang, William Mitchell, Thomas Hodsden, Martin Heeney, Julianna Panidi
  • Patent number: 12173991
    Abstract: The present invention provides a ballistic shield made of an optically opaque bulletproof shield having a back and a front side, wherein the shield does not include a transparent view window. Further, the ballistic shield includes at least one arm or hand hold centrally located on the back side of the bulletproof shield. A plurality of cameras is located on the front side of the bulletproof shield, at least one of the plurality of cameras operating in an electro-optical spectrum, and at least one of the plurality of cameras operating in the infra-red (IR) spectrum, wherein the plurality of cameras capture at least one image and a plurality of light emitting sources located on the front side of the bulletproof shield. Further, the ballistic shield includes a screen for viewing at least one image, wherein the screen is located on the back of the shield.
    Type: Grant
    Filed: August 16, 2023
    Date of Patent: December 24, 2024
    Assignee: Hyperion Technology Group, Inc.
    Inventors: Charles Balaj, William Mitchell, Shawn A. Kalis
  • Patent number: 12164182
    Abstract: The present disclosure provides a contact lens comprising a first colourant which is a blue-blocking colourant having an absorption maximum (?max) in the range of from 415 nm to 455 nm and a second colourant, wherein the second colourant is a polymerizable dye having an absorption maximum (?max) in the range of from 470 nm to 600 nm, and optionally also comprising a third colourant which is a colourant having an absorption maximum in the range of from greater than 600 nm to 800 nm. A method of making the lens is also provided.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: December 10, 2024
    Assignee: COOPERVISION INTERNATIONAL LIMITED
    Inventors: Robert Andrew Broad, Yuwen Liu, William Mitchell
  • Publication number: 20240215731
    Abstract: An adjustable support device includes a frame and an inflatable bladder. The frame includes a first substantially planar structure and a second substantially planar structure. The first substantially planar structure is rotatably coupled to the second substantially planar structure The frame further includes a first frame attachment structure configured to be removably attached to the frame. The inflatable bladder includes walls forming an interior volume and a first bladder attachment structure attached to at least one of the walls. The first bladder attachment structure forms a channel. The first frame attachment structure is configured to be routed through the channel to secure the inflatable bladder to the frame.
    Type: Application
    Filed: December 28, 2023
    Publication date: July 4, 2024
    Inventors: William Mitchell Wittekind, Stela Angelova Markova
  • Patent number: 11984858
    Abstract: Apparatus and methods for oscillation suppression of cascode power amplifiers are provided herein. In certain implementations, a power amplifier system includes a cascode power amplifier including a plurality of transconductance devices that operate in combination with a plurality of cascode devices to amplify a radio frequency input signal. The power amplifier system further includes a bias circuit that biases the plurality of cascode devices with two or more bias voltages that are decoupled from one another at radio frequency to thereby inhibit the cascode power amplifier from oscillating.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: May 14, 2024
    Assignee: Skyworks Solutions, Inc.
    Inventor: John William Mitchell Rogers
  • Patent number: 11960957
    Abstract: A system for tracing members of an animal population throughout a process including moving at least some of the members between a plurality of physically separate locations, the system comprising: a plurality of identification devices, each being attached to, and uniquely identifying, a respective member of the members; a plurality of identification device readers, each capable of being located at a respective physically separate location of the physically separate locations, and each capable of reading the identification devices to uniquely identify the respective member; a data repository comprising one or more records, each of the records (i) being associated with a respective member of the members, and (ii) including a unique animal identifier associated with the identification device attached to the respective member of the members; and a processing circuitry configured to perform a process for storing location change records indicative of location changes of the members during the process.
    Type: Grant
    Filed: October 18, 2021
    Date of Patent: April 16, 2024
    Assignee: IdentiGEN LIMITED
    Inventors: Robert William Mitchell, Yuval Rapaport-Rom, Matteo Ratti
  • Patent number: 11909732
    Abstract: A server computer hosting an extended reality world receives a first transmission over a communication network from a computing device associated with a user, the first transmission including a request for the user to access the extended reality world. The server computer transmits a presentation of the extended reality world to the communication device over the communications network based at least in part on the request, and displays the presentation of the extended reality world on the computing device, where the presentation includes at least an avatar associated with the user. The server computer receives a command for the avatar to store a phrase selected by the user in a location associated with a virtual object within the extended reality world. The server computer displays, within the presentation of the extended reality world on the computing device, the avatar storing the phrase at the location in the extended reality world.
    Type: Grant
    Filed: July 31, 2023
    Date of Patent: February 20, 2024
    Assignee: Intuit Inc.
    Inventor: Michael William Mitchell
  • Patent number: 11867552
    Abstract: A portable weighing unit (10) comprising a body having a pair of side walls (12, 14) and an end wall (13) defining a space for receiving an animal. A holder (17) mounted with respect to the body and configured to receive an enticement (18) for attracting an animal into the space. A reader (19) mounted with respect to the body and configured to read animal identification (ID) information provided on an ID tag of the animal. A platform (15) located within said space to receive the front feet of the animal and take a weight measurement of the front feet. A controller (20) for receiving the said weight measurement from the platform and the animal ID information from the reader and transmit them to a remote processor for processing wherein the processor is configured to convert the weight measurement of the front feet to a full body weight measurement for the animal.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: January 9, 2024
    Assignee: PLATINUM AGRIBUSINESS PTY LTD
    Inventor: William Mitchell
  • Patent number: 11839155
    Abstract: The invention relates to novel organic semiconducting compounds containing a polycyclic unit, 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, perovskite-based solar cell (PSC) devices, organic photodetectors (OPD), organic field effect transistors (OFET) and organic light emitting diodes (OLED), and to OE, OPV, PSC, OPD, OFET and OLED devices comprising these compounds, compositions or polymer blends.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: December 5, 2023
    Assignee: RAYNERGY TEK INC.
    Inventors: William Mitchell, Agnieszka Pron, Mansoor D'Lavari, Kane Heard, Jonathan Snow, Ignasi Burgues, Quentin Huaulme
  • Patent number: 11831645
    Abstract: This disclosure relates to restricting access in a social network. The social network stores profile information for each of a plurality of users of the social network in a database. The social network receives, from a first user of the social network, a request to invite a second user to establish a connection with the first user. The social network transmits, to the first user, one or more questions pertaining to the profile information of the second user. The social network receives, from the first user, one or more answers responsive to the one or more questions. The social network determines whether each of the answers is correct based on the stored profile information of the second user. The social network transmits, to the second user, an invitation to establish the connection with the first user when at least a number of the answers are correct.
    Type: Grant
    Filed: March 31, 2023
    Date of Patent: November 28, 2023
    Assignee: Intuit Inc.
    Inventor: Michael William Mitchell
  • Publication number: 20230376954
    Abstract: An electronic device comprising circuitry configured to: receive a transaction request, requesting a transaction, in response to a user initiating a transaction at an automated teller machine. The transaction request conforming to a transaction request protocol and including at least a first field for the value of the transaction and a second field for identification of an account for which the transaction is requested. The circuitry retrieves from storage an electronic device identifier associated with the account for which the transaction is requested. It determines whether authentication of the user should be requested based at least on a property of the requested transaction. The circuitry transmits a request for authentication of the user to the electronic device identified by the electronic device identifier; and transmit a transaction instruction to the automated teller machine based on a condition of a response to the request for authentication of the user.
    Type: Application
    Filed: September 16, 2021
    Publication date: November 23, 2023
    Inventors: George William Mitchell, Terence McGuire, Panchali Ghuman-Karu, Karen Lynette Murdoch
  • Patent number: 11765118
    Abstract: This disclosure relates to systems and methods for providing user content on a social network. In some aspects, the social network receives, over a communications network from a first computing device associated with a first user of the social network, a transmission including a post to be published on the social network. The social network detects, in the post, goods or services sought or inquired about by the first user, and determines a proximity of the first user. The social network identifies one or more other users of the social network located within a geographical area or the proximity associated with the first user, and presents the post only to the one or more identified users of the social network.
    Type: Grant
    Filed: April 27, 2023
    Date of Patent: September 19, 2023
    Assignee: Intuit Inc.
    Inventor: Michael William Mitchell
  • Patent number: 11664767
    Abstract: Doherty power amplifiers with coupled line combiners are provided herein. In certain embodiments, a power amplifier system includes a carrier amplifier having a carrier output that provides a first radio frequency signal, a peaking amplifier having a peaking output that provides a second radio frequency signal, and a coupled line combiner including a first conductor line connected to the peaking output, a second conductor line electromagnetically coupled to the first conductor line, a third conductor line connected to the carrier output, and a fourth conductor line electromagnetically coupled to the third conductor line and in series with the second conductor line. The power amplifier system further includes an inductor in series with the fourth conductor line and the second conductor line and operable to provide a radio frequency output signal to an output terminal.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: May 30, 2023
    Assignee: Skyworks Solutions, Inc.
    Inventors: Brendan J. Korba, John William Mitchell Rogers, Hassan Sarbishaei
  • Patent number: 11649321
    Abstract: The invention relates to novel organic semiconducting compounds containing a polycyclic unit, 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, perovskite-based solar cell (PSC) devices, organic photodetectors (OPD), organic field effect transistors (OFET) and organic light emitting diodes (OLED), and to OE, OPV, PSC, OPD, OFET and OLED devices comprising these compounds, compositions or polymer blends.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: May 16, 2023
    Assignee: RAYNERGY TEK INCORPORATION
    Inventors: William Mitchell, Agnieszka Pron, Mansoor D'Lavari, Kane Heard
  • Patent number: 11637246
    Abstract: The invention relates to novel organic semiconducting compounds containing a polycyclic unit, 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, perovskite-based solar cell (PSC) devices, organic photodetectors (OPD), organic field effect transistors (OFET) and organic light emitting diodes (OLED), and to OE, OPV, PSC, OPD, OFET and OLED devices comprising these compounds, compositions or polymer blends.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: April 25, 2023
    Assignees: Raynergy Tek Incorporation, Peking University
    Inventors: Agnieszka Pron, Quentin Huaulme, William Mitchell, Mansoor D'Lavari, Xiaowei Zhan, Wei Wang, Guilong Cai
  • Patent number: 11603431
    Abstract: The invention relates to novel compounds containing one or more units derived from 2,6-disubstituted-[1,5]naphthyridine or 1,6-disubstituted-1H-[1,5]naphthyridine-2-one, to methods for their preparation and educts or intermediates used therein, to mixtures and formulations containing them, to the use of the compounds, 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 compounds, mixtures or formulations.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: March 14, 2023
    Assignee: RAYNERGY TEK INCORPORATION
    Inventors: Lana Nanson, Nicolas Blouin, William Mitchell, Joseph Cameron, Peter Skabara
  • Patent number: 11597065
    Abstract: Pressure gauges according to this invention provide pressure measurement on all brands of crimping tools, including 6-Ton D3 tools. In particular, this design eliminates the need to remove the tool crimp head to measure the pressure of the crimping tool. Additionally, this design eliminates the need to install additional dedicated fixtures on the crimping tool to measure the ram pressure. This design incorporates a self-centering profile to avoid side-loading when mounting the pressure gauge in the crimping tool. The dial indicator on pressure gauges of this invention captures and holds the maximum pressure reading with the use of a simple manual lever. The lever can be easily reset for the next pressure reading. Pressure gauges according to various embodiments of this invention include dual piston pressure sensors. Additionally, pressure measurement is accomplished with a simple hydro mechanical manometer display.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: March 7, 2023
    Assignee: Ilsco, LLC
    Inventors: James Bider, William Mitchell, Bill Wolins
  • Patent number: D1002790
    Type: Grant
    Filed: February 6, 2023
    Date of Patent: October 24, 2023
    Assignee: Hyperion Technology Group, Inc
    Inventors: Charles Balaj, William Mitchell, Shawn A. Kalis, Geoffrey Ewald Carter, Taylor Beth Patton, Brandon Smith