Patents by Inventor T. Chang

T. Chang 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: 20230022499
    Abstract: A sensor implant device includes a shunt structure comprising a flow path conduit and a plurality of arms configured to secure the shunt structure to a tissue wall, and a pressure sensor device attached to one of the plurality of arms of the shunt structure. The pressure sensor device comprises one or more sensor elements, an antenna, control circuitry electrically coupled to the one or more sensor elements and the antenna, and a housing that houses the control circuitry.
    Type: Application
    Filed: October 3, 2022
    Publication date: January 26, 2023
    Inventors: Stanton J. Rowe, Arvin T. Chang, Joseph Arthur Passman, Scott Louis Pool, Jinny Lee, Viral Lalitmohan Gandhi, Alison S. Curtis, Gregory Bak-Boychuk, Emil Karapetian, Glen T. Rabito, Cristobal R. Hernandez
  • Patent number: 11561095
    Abstract: A resonator includes an anchor, an outer stiffener ring on an outer perimeter of the resonator, and a plurality of curved springs between the anchor and the outer stiffener ring.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: January 24, 2023
    Assignee: HRL LABORATORIES, LLC
    Inventors: Lian X. Huang, Logan Sorenson, Raviv Perahia, Hung Nguyen, David T. Chang
  • Patent number: 11506493
    Abstract: An angular rate sensor. The sensor includes a Coriolis vibratory gyroscope (CVG) resonator, configured to oscillate in a first normal mode and in a second normal mode; a frequency reference configured to generate a reference signal; and a first phase control circuit. The first phase control circuit is configured to: measure a first phase difference between: a first phase target, and the difference between: a phase of an oscillation of the first normal mode and a phase of the reference signal. The first phase control circuit is further configured to apply a first phase correction signal to the CVG resonator, to reduce the first phase difference. A second phase control circuit is similarly configured to apply a second phase correction signal to the CVG resonator, to reduce a corresponding, second phase difference.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: November 22, 2022
    Assignee: HRL LABORATORIES, LLC
    Inventors: Logan D. Sorenson, Raviv Perahia, David T. Chang, Randall L. Kubena, Deborah J. Kirby, Hung Nguyen, Richard J. Joyce
  • Patent number: 11493534
    Abstract: A self-calibration method for an accelerometer having a proof mass separated by a gap from a drive electrode and a sense electrode includes initializing the accelerometer to resonate, applying a first bias voltage to the sense electrode and a second bias voltage to the drive electrode to obtain a first scale factor, measuring a first acceleration over a first time interval, swapping the first bias voltage on the sense electrode with the second bias voltage previously on the drive electrode and the second bias voltage on the drive electrode with the first bias voltage previously on the sense electrode so that a bias voltage on the sense electrode is set to the second bias voltage and a bias voltage on the drive electrode is set to the second bias voltage to obtain a second scale factor, measuring a second acceleration over a second time interval, and calculating a true acceleration.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: November 8, 2022
    Assignee: HRL LABORATORIES, LLC
    Inventors: Logan D. Sorenson, Lian X. Huang, Matthew J. Pelliccione, Raviv Perahia, Hung Nguyen, David T. Chang
  • Patent number: 11479653
    Abstract: A packaging material comprising a graphene-reinforced polymer matrix composite (G-PMC) is disclosed. The packaging material has improved barrier resistance to gas and liquid permeants. Also disclosed is a method of improving barrier resistance of a polymer to a permeant, the method comprising forming a graphene-reinforced polymer matrix composite within the polymer. The packaging material may be used for packaging food, drug, perfume, etc. and to make various containers.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: October 25, 2022
    Assignee: RUTGERS, THE STATE UNIVERSITY OF NEW JERSEY
    Inventors: Jennifer K. Lynch-Branzoi, Thomas J. Nosker, Bernard H. Kear, Charles T. Chang
  • Patent number: 11469732
    Abstract: A method of making a SiC resonator includes forming a layer of an oxide material on a relatively thick wafer of SiC; bonding the layer of oxide material on the relatively thick wafer of SiC to a handle wafer having at least an oxide exterior surface, the resulting bond being substantially free of voids; planarizing the relatively thick wafer of SiC to a desired thickness; forming top and bottom electrodes on the wafer of SiC wafer to define a SiC wafer resonator portion; and forming a trench around the top and bottom electrodes, the tench completely penetrating the planarized wafer of SiC around a majority of a distance surrounding said top and bottom electrodes, except for one or more tether regions of the planarized wafer of SiC which remain physically coupled a remaining portion the SiC wafer resonator portion which defines a frame formed of the planarized wafer of SiC surrounding the SiC wafer resonator portion.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: October 11, 2022
    Assignee: HRL LABORATORIES, LLC
    Inventors: Raviv Perahia, Logan D. Sorenson, Lian X. Huang, David T. Chang, Makena S. White, Jeremy Bregman
  • Publication number: 20220218184
    Abstract: A luminal navigation system including a catheter including a sensor and a pod including a wireless communication device, the wireless communication device transmitting data received from the sensor.
    Type: Application
    Filed: January 11, 2022
    Publication date: July 14, 2022
    Inventors: Allison T. Chang, Kurt L. Moberg, Raelyn E. Nyren, Keith Jasperson
  • Patent number: 11363017
    Abstract: Systems and methods receive a first indication that an Internet of Things (IoT) device is attempting to access a home network; determine that the IoT device is a trusted device; store an identifier associated with the IoT device to a blockchain in response to determining that the IoT device is a trusted device; receive a second indication that an event has occurred with respect to the IoT device; determine whether the event is a major event; and verify the identifier associated with the IoT device by storing an identity and information associated with the event to the blockchain in response to determining that the event is a major event.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: June 14, 2022
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Michelle Zhou, Ying Wang, Wen-De T. Chang, Satya P. Yandra, Erfaun Noorani
  • Patent number: 11299981
    Abstract: An instrument package for use during the drilling a wellbore. The instrument package includes a plurality of instruments such as accelerometers, gyroscopes, and magnetometers; a computer is configured to determine the current position of the plurality of instruments from a set of measurements produced by the plurality of instruments; and wherein the plurality of instruments are mechanically isolated from a drill head assembly by one or more multi-degree of freedom vibration isolators. The computer preferably has at least two modes different analytical modes of analyzing the set of measurements produced by the plurality of instruments, including a continuous mode and a survey mode, the continuous mode being operational during times that active drilling is occurring and the survey mode being operational during times that the active drilling is not occurring.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: April 12, 2022
    Assignee: HRL Laboratories, LLC
    Inventors: Hung Nguyen, Logan D. Sorenson, David L. Walter, Adour V. Kabakian, Raviv Perahia, Shuoqin Wang, David W. Shahan, Lian X. Huang, David T. Chang
  • Publication number: 20220100833
    Abstract: A portable electronic device may include a housing member defining a side surface of the portable electronic device, a portion of the housing member defining a side wall of a hole extending through the housing member, a button member positioned along the side surface and defining a chassis portion and a hollow post extending into the hole defined through the housing member, and a first waterproof seal defined between the hollow post and the side wall of the hole. The portable electronic device may also include a biometric sensing component coupled to the chassis portion, a flexible circuit element extending through the hollow post and conductively coupling the biometric sensing component to a component within the housing, and a second waterproof seal defined within the hollow post.
    Type: Application
    Filed: September 9, 2021
    Publication date: March 31, 2022
    Inventors: Timothy D. Koch, Dylan L. Magida, Michael B. Wittenberg, Henry H. Yang, Alvin T. Chang, Steven C. Roach, Jared P. Ostdiek
  • Patent number: 11275099
    Abstract: A resonant accelerometer includes a proof mass, one or more springs connecting the proof mass to an anchor, and one or more capacitive transduction gaps providing a void or space between the movable proof mass and a corresponding fixed electrode, wherein the static displacement of the proof mass in response to acceleration applied to the anchor modifies the electrostatic stiffness imparted by one or more of the capacitive transduction gaps on the proof mass, resulting in a corresponding change in the resonance frequency of the resonant accelerometer.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: March 15, 2022
    Assignee: HRL Laboratories, LLC
    Inventors: Logan D. Sorenson, Lian X. Huang, Raviv Perahia, Hung Nguyen, David T. Chang
  • Patent number: 11237000
    Abstract: A sensor comprising a resonator structure arranged for resonating along a first plane; and at least one sensing electrode arranged on a second plane parallel to said first plane at a predetermined distance of said resonator structure along a direction normal to said first plane.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: February 1, 2022
    Assignee: HRL Laboratories, LLC
    Inventors: Raviv Perahia, Lian X. Huang, Logan D. Sorenson, Hung Nguyen, David T. Chang
  • Publication number: 20220008014
    Abstract: A sensor implant device includes a shunt structure comprising a flow path conduit and a plurality of arms configured to secure the shunt structure to a tissue wall, and a pressure sensor device attached to one of the plurality of arms of the shunt structure. The pressure sensor device comprises one or more sensor elements, an antenna, control circuitry electrically coupled to the one or more sensor elements and the antenna, and a housing that houses the control circuitry.
    Type: Application
    Filed: December 9, 2019
    Publication date: January 13, 2022
    Inventors: Stanton J. Rowe, Arvin T. Chang, Joseph Arthur Passman, Scott Louis Pool, Jinny Lee, Viral Lalitmohan Gandhi, Alison S. Curtis, Gregory Bak-Boychuk, Emil Karapetian, Glen T. Rabito, Cristobal R. Hernandez
  • Publication number: 20210389795
    Abstract: A portable electronic device can include a housing at least partially defining an internal volume and a battery disposed in the internal volume. The battery can include sidewalls and a top portion extending past the sidewalls to define a flange. A component can be positioned in the internal volume adjacent to the battery, and at least a portion of the component can extend beyond an edge of the flange toward the sidewall of the battery.
    Type: Application
    Filed: September 11, 2020
    Publication date: December 16, 2021
    Inventors: Alvin T. Chang, Jody C. Fu, Ross L. Jackson, Adam T. Clavelle
  • Publication number: 20210361427
    Abstract: Implants or systems of implants and methods apply a selected force vector or a selected combination of force vectors within or across the right atrium, which allow tricuspid valve leaflets to better coapt. The implants or systems of implants and methods make possible rapid deployment, facile endovascular delivery, and full intra-atrial retrievability. The implants or systems of implants and methods also make use of strong fluoroscopic landmarks. The implants or systems of implants and methods make use of an adjustable implant. The implants or systems of implants and methods may utilize a bridge stop to secure the implant.
    Type: Application
    Filed: August 6, 2021
    Publication date: November 25, 2021
    Inventors: Robert T. Chang, Timothy R. Machold, David A. Rahdert, Jason Rogers
  • Patent number: 11180542
    Abstract: The present invention provides liquid formulations of SYNAGIS® or an antigen-binding fragment thereof that immunospecifically bind to a respiratory syncytial virus (RSV) antigen, which formulations exhibit stability, low to undetectable levels of aggregation, and very little to no loss of the biological activities of SYNAGIS® or an antigen-binding fragment thereof, even during long periods of storage. In particular, the present invention provides liquid formulations of SYNAGIS® or an antigen-binding fragment thereof which immunospecifically binds to a RSV antigen, which formulations are substantially free of surfactant, inorganic salts, and/or other common excipients. Furthermore, the invention provides method of preventing, treating or ameliorating symptoms associated with RSV infection utilizing liquid formulations of the present invention.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: November 23, 2021
    Assignee: Arexis AB
    Inventors: Cynthia N. Oliver, Erica Shane, Benjamin S. Isaacs, Christian B. Allan, Stephen T. Chang
  • Patent number: 11164337
    Abstract: This document describes techniques and systems that enable autocalibration for multiple cameras using near-infrared (NIR) illuminators. The techniques and systems include a user device that uses NIR images, including dot images and flood images, captured by the multiple cameras. The user device implements an autocalibration module that normalizes the contrast of each image. Then, the autocalibration module detects dot features in the dot images and detects flood features in the flood images. The autocalibration module uses the flood features to disambiguate the dot features in the dot images. Then, the autocalibration module uses the disambiguated dot features to determine new calibration parameters for recalibration of the multiple cameras. In some aspects, the autocalibration module uses the dot images, rather than the flood images, to detect the flood features for disambiguating the dot features.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: November 2, 2021
    Assignee: Google LLC
    Inventors: Edward T. Chang, Mykhaylo Kurinnyy, Zhaowei Wang, Jonathan James Taylor
  • Publication number: 20210322146
    Abstract: A valve cover apparatus for use in a medical assembly including a prosthetic valve and a valve delivery apparatus. The valve cover apparatus includes a housing, a chamber disposed within the housing for receiving a prosthetic heart valve in an at least partially expanded state, a tapered surface defining a portion of the chamber, and a lock ring that is axially movable over at least a portion of the housing between a locked position and an unlocked position. The tapered surface is enables loading and/or guiding of the prosthetic heart valve from the chamber of the valve cover apparatus into a delivery sheath of the valve delivery apparatus and transition the prosthetic heart valve to a radially compressed state. The lock ring restricts movement of the valve cover relative to the delivery sheath when in the locked position, and enables movement of the valve cover when in the unlocked position.
    Type: Application
    Filed: July 1, 2021
    Publication date: October 21, 2021
    Inventors: Vipul P. Rajpara, Darshin S. Patel, Michael R. Bialas, Brian R. Lowry, Russ Hunton, Arvin T. Chang
  • Patent number: 11150313
    Abstract: A sensing array includes a plurality of pixels, one pixel of which includes: a sensor, the sensor including a first electrode, a second electrode, and an atomic defect site configured to be excited by light of a first frequency; a light source below the sensor and configured to emit light of the first frequency toward the defect site; and a radio frequency (RF) source below the sensor and configured to provide a first voltage to the first electrode, a second voltage to the second electrode, and an RF signal to the sensor, wherein the sensor is configured to sense a magnitude of a physical parameter by generating a photocurrent corresponding to a magnitude of a physical parameter and a differential between the first and second voltages, when excited by the light of the first frequency and affected by the RF signal.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: October 19, 2021
    Assignee: HRL Laboratories, LLC
    Inventors: Edward H. Chen, Matthew J. Pelliccione, David T. Chang, Raviv Perahia, Biqin Huang
  • Patent number: 11137249
    Abstract: A resonant structure comprising at least two coaxial rings, wherein adjacent coaxial rings have adjacent peripheries and are attached together by a plurality of connection structures regularly arranged along said adjacent peripheries; and wherein a first ring has a first ring portion with a first radial thickness and a second ring, portion, in a vicinity of a first connection structure, with a second radial thickness smaller than said first radial thickness.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: October 5, 2021
    Assignee: HRL Laboratories, LLC
    Inventors: Lian X. Huang, Logan D. Sorenson, Chia-Ming “Gavin” Chang, Raviv Perahia, Hung Nguyen, David T. Chang