Patents by Inventor Hang Kwan

Hang Kwan 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: 20240087882
    Abstract: Exemplary semiconductor processing methods may include providing one or more deposition precursors to a processing region of a semiconductor processing chamber. The methods may include contacting a substrate housed in the processing region with the one or more deposition precursors. The methods may include forming a silicon-containing material on the substrate. The methods may include providing a fluorine-containing precursor to the processing region of the semiconductor processing chamber. The methods may include contacting the silicon-containing material on the substrate with the fluorine-containing precursor to form a fluorine-treated silicon-containing material. The methods may include contacting the fluorine-treated silicon-containing material with plasma effluents of argon or diatomic nitrogen.
    Type: Application
    Filed: September 9, 2022
    Publication date: March 14, 2024
    Applicant: Applied Materials, Inc.
    Inventors: Siyu Zhu, Hang Yu, Deenesh Padhi, Sung-Kwan Kang, Abdul Wahab Mohammed, Abhijit Basu Mallick
  • Publication number: 20230003691
    Abstract: Systems and methods are disclosed for conducting an ultrasonic-based inspection. The systems and methods perform operations comprising: receiving a plurality of scan plan parameters associated with generating an image of at least one flaw within a specimen based on acoustic echo data obtained using full matrix capture (FMC); applying the plurality of scan plan parameters to an acoustic model, the acoustic model configured to determine a two-way pressure response of a plurality of inspection modes based on specular reflection and diffraction phenomena; generating, by the acoustic model based on the plurality of scan plan parameters, an acoustic region of influence (AROI) comprising an acoustic amplitude sensitivity map for a first inspection mode amongst the plurality of inspection modes; and generating, for display, a first image comprising the AROI associated with the first inspection mode for capturing or inspecting the image of the at least one flaw.
    Type: Application
    Filed: September 8, 2022
    Publication date: January 5, 2023
    Inventors: Chi-Hang Kwan, Nicolas Badeau, Benoit Lepage, Guilaume Painchaud-April
  • Patent number: 11474076
    Abstract: Systems and methods are disclosed for conducting an ultrasonic-based inspection. The systems and methods perform operations comprising: receiving a plurality of scan plan parameters associated with generating an image of at least one flaw within a specimen based on acoustic echo data obtained using full matrix capture (FMC); applying the plurality of scan plan parameters to an acoustic model, the acoustic model configured to determine a two-way pressure response of a plurality of inspection modes based on specular reflection and diffraction phenomena; generating, by the acoustic model based on the plurality of scan plan parameters, an acoustic region of influence (AROI) comprising an acoustic amplitude sensitivity map for a first inspection mode amongst the plurality of inspection modes; and generating, for display, a first image comprising the AROI associated with the first inspection mode for capturing or inspecting the image of the at least one flaw.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: October 18, 2022
    Assignee: Olympus NDT Canada Inc.
    Inventors: Chi-Hang Kwan, Nicolas Badeau, Benoit Lepage, Guillaume Painchaud-April
  • Publication number: 20200278323
    Abstract: Systems and methods are disclosed for conducting an ultrasonic-based inspection. The systems and methods perform operations comprising: receiving a plurality of scan plan parameters associated with generating an image of at least one flaw within a specimen based on acoustic echo data obtained using full matrix capture (FMC); applying the plurality of scan plan parameters to an acoustic model, the acoustic model configured to determine a two-way pressure response of a plurality of inspection modes based on specular reflection and diffraction phenomena; generating, by the acoustic model based on the plurality of scan plan parameters, an acoustic region of influence (AROI) comprising an acoustic amplitude sensitivity map for a first inspection mode amongst the plurality of inspection modes; and generating, for display, a first image comprising the AROI associated with the first inspection mode for capturing or inspecting the image of the at least one flaw.
    Type: Application
    Filed: February 24, 2020
    Publication date: September 3, 2020
    Inventors: Chi-Hang Kwan, Nicolas Badeau, Benoit Lepage, Guillaume Painchaud-April
  • Publication number: 20200121292
    Abstract: Example embodiments of the present invention relate to a method and an apparatus for ultrasound imaging wherein transmitting elements of an ultrasonic array probe transmit ultrasound energy and receiving elements of the ultrasonic array probe receive received signals from the test object. The method includes deriving analytic signal values from the received signals, the analytic signal values being derived by applying a Hilbert transform to the received signals and performing a summation of multiple signal products derived by multiplication of a corresponding group of analytic signal values.
    Type: Application
    Filed: October 16, 2019
    Publication date: April 23, 2020
    Applicant: Olympus Scientific Solutions Americas Corp.
    Inventors: Chi-Hang Kwan, Jeremy Moriot, Charles Brillon
  • Patent number: 10309934
    Abstract: Disclosed is an ultrasonic non-destructive testing and inspection system and method for determining acoustic velocities in a test object. Beams of acoustic energy from firing an element of an emitting probe propagate in a first wedge, and a beam incident at the critical angle generates a surface wave in the test object. The surface wave propagates to a second wedge and signals are received at receiving elements of a receiving probe array. When a set of appropriate delays is applied to the receiving elements, the acoustic time-of-flight is the same to all receiving elements. Determination of the appropriate delays and the times-of-flight for P-type surface waves and Rayleigh surface waves enables computation of the P- and S-wave acoustic velocities in the test object. The time-of-flight measurement also enables computation of the separation between the first and second wedges.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: June 4, 2019
    Assignee: OLYMPUS SCIENTIFIC SOLUTIONS AMERICAS INC
    Inventors: Cécile Brütt, Guillaume Painchaud-April, Chi-Hang Kwan, Benoit Lepage
  • Publication number: 20180284069
    Abstract: Disclosed is an ultrasonic non-destructive testing and inspection system and method for determining acoustic velocities in a test object. Beams of acoustic energy from firing an element of an emitting probe propagate in a first wedge, and a beam incident at the critical angle generates a surface wave in the test object. The surface wave propagates to a second wedge and signals are received at receiving elements of a receiving probe array. When a set of appropriate delays is applied to the receiving elements, the acoustic time-of-flight is the same to all receiving elements. Determination of the appropriate delays and the times-of-flight for P-type surface waves and Rayleigh surface waves enables computation of the P- and S-wave acoustic velocities in the test object. The time-of-flight measurement also enables computation of the separation between the first and second wedges.
    Type: Application
    Filed: March 29, 2017
    Publication date: October 4, 2018
    Applicant: Olympus Scientific Solutions Americas Inc.
    Inventors: Cécile BRÜTT, Guillaume Painchaud-April, Chi-Hang Kwan, Benoit Lepage
  • Patent number: 7849430
    Abstract: A pruning algorithm for generating a reverse donut model (RDM) for running timing analysis for a block in an IC includes logic to reduce a hierarchical model of the IC to a single level flat model. A block from a plurality of blocks that make up the IC is identified from the single level flat model of the IC. The pruning algorithm is further used to initialize a timer and to define timing constraints associated with each of a plurality of input and output pins associated with the identified block. A RDM for the identified block is generated by identifying and including connectivity information associated with a plurality of input and output pins in an outer boundary of the identified block and at least one layer of interface connection between each of the plurality of input and output pins in the outer layer of the identified block and one or more circuit elements external to the identified block in the IC interfacing with each of the plurality of input and output pins in the identified block.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: December 7, 2010
    Assignee: Oracle America, Inc.
    Inventors: Richard W. Smith, Hang Kwan, Manzurul Khan
  • Publication number: 20090241081
    Abstract: A pruning algorithm for generating a reverse donut model (RDM) for running timing analysis for a block in an IC includes logic to reduce a hierarchical model of the IC to a single level flat model. A block from a plurality of blocks that make up the IC is identified from the single level flat model of the IC. The pruning algorithm is further used to initialize a timer and to define timing constraints associated with each of a plurality of input and output pins associated with the identified block. A RDM for the identified block is generated by identifying and including connectivity information associated with a plurality of input and output pins in an outer boundary of the identified block and at least one layer of interface connection between each of the plurality of input and output pins in the outer layer of the identified block and one or more circuit elements external to the identified block in the IC interfacing with each of the plurality of input and output pins in the identified block.
    Type: Application
    Filed: March 24, 2008
    Publication date: September 24, 2009
    Inventors: Richard W. Smith, Hang Kwan, Manzurul Khan
  • Patent number: 5157282
    Abstract: The present invention minimizes the noise voltage associated with the switching of output driver transistors of integrated cicruits caused by the rapid change in value of the current, expressed by the term di/dt, from the load into the driver transistors through the package leads. The present invention uses a programmable coarse current control (CCC) circuit and a programmable fine current control (FCC) circuit that control the pull-down output transistors. The FCC creates two time periods, after which it prevents the CCC from controlling an output pull-down transistor. The FCC and the CCC are used to reduce the di/dt dependent voltage noise by controlling the slope and the shape of the output voltage pull-down characteristics.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: October 20, 1992
    Assignee: Cypress Semiconductor Corporation
    Inventors: Randy T. Ong, Suresh M. Menon, Hang Kwan