Patents by Inventor James S. Chang

James S. 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).

  • Patent number: 11976083
    Abstract: The present disclosure relates to novel compounds for use in therapeutic treatment of a disease associated with peptidylarginine deiminases (PADs), such as peptidylarginine deiminase type 4 (PAD4). The present disclosure also relates to processes and intermediates for the preparation of such compounds, methods of using such compounds and pharmaceutical compositions comprising the compounds described herein.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: May 7, 2024
    Assignee: Gilead Sciences, Inc.
    Inventors: Eda Y. Canales, Weng K. Chang, Laurent P. Debien, Petr Jansa, Jennifer A. Loyer-Drew, Luisruben P. Martinez, Stephane Perreault, Gary B Phillips, Hyung-Jung Pyun, Roland D. Saito, Michael S. Sangi, Adam J. Schrier, Marina E. Shatskikh, James G. Taylor, Jennifer A. Treiberg, Joshua J. Van Veldhuizen
  • Patent number: 10748752
    Abstract: A method is disclosed for analyzing ions by mass spectrometry by repeatedly executing a data acquisition cycle to acquire product ion data across a precursor mass range of interest. The data acquisition cycle comprises performing, for each of a plurality of isolation windows having different mass ranges, steps of (i) isolating precursor ions within the mass range of the isolation window, (ii) fragmenting the isolated precursor ions to generate product ions, and (iii) mass analyzing the product ions. The step of mass analyzing the product ions includes concurrently mass analyzing product ions corresponding to N isolation windows, N being an integer greater than or equal to one, wherein N is changed at least once across the data acquisition cycle.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: August 18, 2020
    Assignee: THERMO FINNIGAN LLC
    Inventor: James S. Chang
  • Publication number: 20190326107
    Abstract: A method is disclosed for analyzing ions by mass spectrometry by repeatedly executing a data acquisition cycle to acquire product ion data across a precursor mass range of interest. The data acquisition cycle comprises performing, for each of a plurality of isolation windows having different mass ranges, steps of (i) isolating precursor ions within the mass range of the isolation window, (ii) fragmenting the isolated precursor ions to generate product ions, and (iii) mass analyzing the product ions. The step of mass analyzing the product ions includes concurrently mass analyzing product ions corresponding to N isolation windows, N being an integer greater than or equal to one, wherein N is changed at least once across the data acquisition cycle.
    Type: Application
    Filed: June 28, 2019
    Publication date: October 24, 2019
    Inventor: James S. CHANG
  • Patent number: 10340130
    Abstract: A method is disclosed for analyzing ions by mass spectrometry by repeatedly executing a data acquisition cycle to acquire product ion data across a precursor mass range of interest. The data acquisition cycle comprises performing, for each of a plurality of isolation windows having different mass ranges, steps of (i) isolating precursor ions within the mass range of the isolation window, (ii) fragmenting the isolated precursor ions to generate product ions, and (iii) mass analyzing the product ions. The step of mass analyzing the product ions includes concurrently mass analyzing product ions corresponding to N isolation windows, N being an integer greater than or equal to one, wherein N is changed at least once across the data acquisition cycle.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: July 2, 2019
    Assignee: THERMO FINNIGAN LLC
    Inventor: James S. Chang
  • Publication number: 20170287687
    Abstract: A method is disclosed for analyzing ions by mass spectrometry by repeatedly executing a data acquisition cycle to acquire product ion data across a precursor mass range of interest. The data acquisition cycle comprises performing, for each of a plurality of isolation windows having different mass ranges, steps of (i) isolating precursor ions within the mass range of the isolation window, (ii) fragmenting the isolated precursor ions to generate product ions, and (iii) mass analyzing the product ions. The step of mass analyzing the product ions includes concurrently mass analyzing product ions corresponding to N isolation windows, N being an integer greater than or equal to one, wherein N is changed at least once across the data acquisition cycle.
    Type: Application
    Filed: March 31, 2017
    Publication date: October 5, 2017
    Inventor: James S. CHANG
  • Patent number: 5743046
    Abstract: A jack shaft garage door operator for opening and closing a movable garage door has a drive containing an electric motor. A rotatable jack shaft is connected to the drive unit to be driven thereby. A pull-up cable drum is connected to and driven by the jack shaft. A pull-up cable extends from the drum about which it is wound and connects to a bottom part of the garage door to raise the door. A pivoting arm is mounted near the jack shaft and provides tension to the cable. A shaft lock hub mounted on the jack shaft is engaged and locked by the arm if the tension in the cable drops. A stop is mounted on the garage door for engagement by the movable arm in the event that the door is opened without the cable being drawn in the cable drum.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: April 28, 1998
    Assignee: The Chamberlain Group, Inc.
    Inventors: Mark D. Siegler, James S. Chang, David J. Miller
  • Patent number: 5633778
    Abstract: An infrared signal interface enables an infrared detector module to communicate with the door edge signal input of a garage door operator. The infrared signal interface has a power supply for driving the pulsed infrared detector. Pulsed signals are received by a missing pulse detector that controls a relay. The relay may be coupled to the door edge signal of the garage door operator.
    Type: Grant
    Filed: July 31, 1995
    Date of Patent: May 27, 1997
    Assignee: The Chamberlain Group, Inc.
    Inventors: James S. Chang, Russell L. Powers
  • Patent number: 5530300
    Abstract: A range extender module for extending the range capability of a barrier control system comprising a low voltage AC control unit which receives low voltage AC control signals conveyed by wires to input terminals thereof from a plurality of remotely located switches and responds to such AC control signals by controlling the barrier. The controlled barrier may be, for example, a garage door or a driveway gate. The range extender module is inserted into the wires between the low voltage AC control unit and the remote switches and includes a source of DC voltage, which is used to energize the formerly AC energized switches and responds to DC input signals created by operator interaction with the switches by selectively gating low voltage AC control signals to appropriate input terminals of the low voltage AC control unit for controlling the barrier.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: June 25, 1996
    Assignee: The Chamberlain Group, Inc.
    Inventors: Russell L. Powers, Doug R. Turner, James S. Chang
  • Patent number: 5299678
    Abstract: An adjustable limit switch mechanism for controlling the operation of an electric motor of a garage door opener over a selected range of movement including a motor driven threaded shaft supporting at least one switch actuator which is adjustably positionable and restrained from rotary movement while being axially translated by rotation of the shaft. A limit switch is mounted adjacent the threaded shaft so as to be actuated as the switch actuator is translated axially on the shaft.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: April 5, 1994
    Assignee: The Chamberlain Group, Inc.
    Inventors: James S. Chang, Mark D. Siegler, Douglas R. Turner
  • Patent number: 5235494
    Abstract: Electrical apparatus including a housing enclosing a printed circuit board mounting a plurality of electrical components. The printed circuit board is detachably mounted on a pivotal support which permits rotation of the circuit board between various positions in the access opening to the housing. The support is a one piece plastic member which frictionally receives the printed circuit board in an elongated slot.
    Type: Grant
    Filed: January 16, 1992
    Date of Patent: August 10, 1993
    Assignee: The Chamberlain Group, Inc.
    Inventors: James S. Chang, Russell L. Powers, Douglas R. Turner
  • Patent number: 5176582
    Abstract: A chain guide is provided for the otherwise unsupported upper run of the endless roller chain of a motor-driven garage door operator. With the chain loop in a vertical plane, the chain guide takes the form of a trough having at its bottom an upstanding central ridge which supports the chain by its rollers and with the links clear of contact with the floor and sides of the trough. The chain guide is supported indirectly by the trackage of the door operator, being mounted upon the fixed rail spacer of one form and carried upon the movable trolley of the other.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: January 5, 1993
    Assignee: The Chamberlain Group, Inc.
    Inventors: James S. Chang, Mark D. Siegler
  • Patent number: 4885872
    Abstract: A garage door operator includes a head unit held by a supporting structure remote from the garage door. A rail has a first end held by a supporting structure adjacent the door and a second end fixed adjacent to and in alignment with a toothed drive wheel carried by the head unit. The garage door operator further includes an endless drive belt assembly trained about the drive wheel and a pulley held by the rail adjacent the garage door. The belt assembly includes a length of a plastic belt having teeth on one surface thereof matching the teeth on the drive wheel. The belt assembly further includes a trolley for connection to the garage door and a connector for joining one end of the plastic belt to one end of the trolley. The plastic belt has a lower surface to which the belt teeth extend, and the drive wheel has an upper surface to which the wheel teeth extend.
    Type: Grant
    Filed: February 1, 1989
    Date of Patent: December 12, 1989
    Assignee: The Chamberlain Group, Inc.
    Inventors: James S. Chang, Scott M. Clark
  • Patent number: 4794731
    Abstract: An adjustable speed garage door operator which has a longitudinal rail with a trolley mounted on the rail and connected to a door to open and close it. A chain is connected to the trolley and is mounted on a front idler sprocket and can be selectively mounted on different drive sprockets which have different numbers of teeth so as to vary the speed of the door.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: January 3, 1989
    Assignee: The Chamberlain Group, Inc.
    Inventors: Colin B. Willmott, James S. Chang
  • Patent number: RE40001
    Abstract: A jack shaft garage door operator for opening and closing a movable garage door has a drive containing an electric motor. A rotatable jack shaft is connected to the drive unit to be driven thereby. A pull-up cable drum is connected to and driven by the jack shaft. A pull-up cable extends from the drum about which it is wound and connects to a bottom part of the garage door to raise the door. A pivoting arm is mounted near the jack shaft and provides tension to the cable. A shaft lock hub mounted on the jack shaft is engaged and locked by the arm if the tension in the cable drops. A stop is mounted on the garage door for engagement by the movable arm in the event that the door is opened without the cable being drawn in the cable drum.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: January 15, 2008
    Assignee: The Chamberlain Group, Inc.
    Inventors: Mark D. Siegler, James S. Chang, David J. Miller