Patents by Inventor Kevin Chang

Kevin 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: 20230282482
    Abstract: A method of manufacturing a semiconductor device includes forming a gate trench over a semiconductor substrate, depositing a gate dielectric layer and a work function layer in the gate trench, depositing a capping layer over the work function layer, passivating a surface portion of the capping layer to form a passivation layer, removing the passivation layer, depositing a fill layer in the gate trench, recessing the fill layer and the capping layer, and forming a contact metal layer above the capping layer in the gate trench.
    Type: Application
    Filed: June 4, 2022
    Publication date: September 7, 2023
    Inventors: Tsung-Han Shen, Kevin Chang, Yu-Ming Li, Chih-Hsiang Fan, Yi-Ting Wang, Wei-Chin Lee, Hsien-Ming Lee, Chien-Hao Chen, Chi On Chui
  • Patent number: 11734715
    Abstract: A promotion offering system and method is disclosed. The promotion offering system and method selects consumers for a test promotion that has one or more attributes, and is configured to generate test data for multiple consumer groupings. The promotion offering system and method may use the test data in analyzing whether to send a promotion to a consumer. For example, the promotion offering system and method may use one algorithm to generate a list of ranked promotions, and may use the test data in order to adjust the list of ranked promotions (such as replacing a highest ranked promotion with another promotion).
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: August 22, 2023
    Assignee: Groupon, Inc.
    Inventors: David Thacker, Amit Aggarwal, Kevin Chang
  • Patent number: 11713948
    Abstract: Implementations of conductive energy weapons (CEWs) may include a shock generating circuit configured to couple to a power source, two electrodes operatively coupled to the shock generating circuit, and a safety circuit operatively coupled to the shock generating circuit. The shock generating circuit may be configured to generate a first pulse train and deliver the first pulse train to a target, and may be configured to generate at least a second pulse train and deliver the at least second pulse train to a target. The safety circuit may be configured to prevent the CEW from applying pulse trains to the target after a predetermined number of pulse trains. The first pulse train may include two or more pulses having waveforms substantially identical with each other, each of the waveforms of the two or more pulses having both a positive voltage segment and a negative voltage segment.
    Type: Grant
    Filed: February 8, 2022
    Date of Patent: August 1, 2023
    Assignee: Leonidas IP, LLC
    Inventors: Steven Abboud, Kevin Chang, Ivo Foldyna
  • Patent number: 11636143
    Abstract: An entity search method, a related device, and a computer storage medium are provided. The method includes: determining a first classifier and a second classifier that are included in query information; determining, based on a first entity library and the first classifier and the second classifier that are included in the query information, s correlations corresponding to each of w candidate entities, wherein information about the candidate entity includes a third classifier and a fourth classifier, and the correlation indicates a correlation between the classifiers in the query information and the classifiers in the candidate entity; and determining, based on the s correlations corresponding to each of the w candidate entities, information about a target entity corresponding to the query information, wherein the target entity is an entity in the w candidate entities.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: April 25, 2023
    Assignees: Huawei Technologies Co., Ltd.
    Inventors: Chuanfei Xu, Yi Chang, Mingzhen Xia, Yueguo Chen, Denghao Ma, Kevin Chang
  • Publication number: 20220405794
    Abstract: A system and method for throttling communications with consumer devices is disclosed. The consumer devices are associated with consumers and consumers are associated with preferred types of electronic correspondence. The system and method transmits to a first set of the consumer devices a first electronic correspondence including a deal from a deal program comprising an offer and an expiration date. The system and method receive responses to the first electronic correspondence and based on the responses and expiration of outstanding offers at the expiration date generates an indicator used to determine to communicate with one or more additional consumers through their consumer devices. The system and method generate additional electronic correspondence of the preferred type and transmit the additional electronic correspondence to the additional consumers. In this way, additional electronic correspondence may be throttled upward or downward.
    Type: Application
    Filed: April 8, 2022
    Publication date: December 22, 2022
    Inventors: Amit Aggarwal, Kevin Chang, David Thacker, Pu Wang
  • Patent number: 11344183
    Abstract: The present invention relates to an ergonomic bidirectional self-locking mechanism for endoscope angulation control knob operation, which allows for easier access to the endoscope control knobs, reduced muscle exertion for knob operation, and real-time locking of the position of the knobs when turned, as disclosed herein. The invention has benefits for the operator thereof from ergonomic and patient safety perspectives.
    Type: Grant
    Filed: November 16, 2021
    Date of Patent: May 31, 2022
    Assignee: SergoMED LLC
    Inventors: Vincent Sciortino, Kevin Chang, Vikram Seshadri
  • Publication number: 20220163294
    Abstract: Implementations of conductive energy weapons (CEWs) may include a shock generating circuit configured to couple to a power source, two electrodes operatively coupled to the shock generating circuit, and a safety circuit operatively coupled to the shock generating circuit. The shock generating circuit may be configured to generate a first pulse train and deliver the first pulse train to a target, and may be configured to generate at least a second pulse train and deliver the at least second pulse train to a target. The safety circuit may be configured to prevent the CEW from applying pulse trains to the target after a predetermined number of pulse trains. The first pulse train may include two or more pulses having waveforms substantially identical with each other, each of the waveforms of the two or more pulses having both a positive voltage segment and a negative voltage segment.
    Type: Application
    Filed: February 8, 2022
    Publication date: May 26, 2022
    Inventors: Steven Abboud, Kevin Chang, Ivo Foldyna
  • Publication number: 20220138794
    Abstract: A promotion program analytical system and method is disclosed. The promotion program analytical system and method selects a promotion program to offer to a consumer. Selection of the promotion program to present to the consumer includes determining a probability that the consumer will accept the promotion program. The probability of acceptance may be determined based on past performance data of similar promotion programs, and also past performance data on the promotion program itself when it is available.
    Type: Application
    Filed: November 9, 2021
    Publication date: May 5, 2022
    Inventors: Kevin Chang, David Thacker, Paul Gauthier, Amit Aggarwal
  • Publication number: 20220138790
    Abstract: Systems, methods and techniques disclosed herein provide dynamic time-based adjustment of predictive modeling data.
    Type: Application
    Filed: January 12, 2022
    Publication date: May 5, 2022
    Inventors: Kevin Chang, Amber Roy Chowdhury
  • Patent number: 11293940
    Abstract: A sensor device includes a carrier, a force feedback sensor, and a probe containing a spin defect, the probe being connected to the force feedback sensor either directly or indirectly via a handle structure. In order to couple the spin defect to a microwave field in an efficient and robust manner, the sensor device includes an integrated microwave antenna arranged at a distance of less than 500 micrometers from the spin defect. The sensor device can be configured as a self-contained exchangeable cartridge that can easily be mounted in a sensor mount of a scanning probe microscope.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: April 5, 2022
    Assignee: ETH Zurich
    Inventors: Christian Degen, Jens Boss, Kevin Chang, Jan Rhensius
  • Publication number: 20220071480
    Abstract: The present invention relates to an ergonomic bidirectional self-locking mechanism for endoscope angulation control knob operation, which allows for easier access to the endoscope control knobs, reduced muscle exertion for knob operation, and real-time locking of the position of the knobs when turned, as disclosed herein. The invention has benefits for the operator thereof from ergonomic and patient safety perspectives.
    Type: Application
    Filed: November 16, 2021
    Publication date: March 10, 2022
    Inventors: Vincent Sciortino, Kevin Chang, Vikram Seshadri
  • Patent number: 11263659
    Abstract: A promotion program analytical system and method is disclosed. The promotion program analytical system and method selects a promotion program to offer to a consumer. Selection of the promotion program to present to the consumer includes determining a probability that the consumer will accept the promotion program. The probability of acceptance may be determined based on past performance data of similar promotion programs, and also past performance data on the promotion program itself when it is available.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: March 1, 2022
    Assignee: GROUPON, INC.
    Inventors: Kevin Chang, David Thacker, Paul Gauthier, Amit Aggarwal
  • Publication number: 20220051647
    Abstract: A musical device between one or more Musical Instrument Digital Interface (MIDI) controllers and one or more musical instruments comprises a housing and a plurality of potentiometers on a surface of the housing. A method of mapping music messages using a musical device is provided. The method includes defining a preset value corresponding to a frequency to be received within a MIDI message. Once a MIDI message having the frequency is received by the device, the device uses the data of the MIDI message and the preset value to create a new output MIDI message. The new output message is then transmitted to a sound module for producing a sound that differs from the sound that would have been produced from the MIDI message, had it been received.
    Type: Application
    Filed: October 28, 2021
    Publication date: February 17, 2022
    Applicant: Sonoclast, LLC
    Inventor: Kevin Chang
  • Patent number: 11243054
    Abstract: Implementations of conductive energy weapons (CEWs) may include a shock generating circuit configured to couple to a power source, two electrodes operatively coupled to the shock generating circuit, and a safety circuit operatively coupled to the shock generating circuit. The shock generating circuit may be configured to generate a first pulse train and deliver the first pulse train to a target, and may be configured to generate at least a second pulse train and deliver the at least second pulse train to a target. The safety circuit may be configured to prevent the CEW from applying pulse trains to the target after a predetermined number of pulse trains. The first pulse train may include two or more pulses having waveforms substantially identical with each other, each of the waveforms of the two or more pulses having both a positive voltage segment and a negative voltage segment.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: February 8, 2022
    Assignee: Leonidas IP, LLC
    Inventors: Steven Abboud, Kevin Chang, Ivo Foldyna
  • Patent number: 11170649
    Abstract: A collision avoidance and road safety system is applied to a road network comprised of a plurality of road segments for a location to produce real time or dynamic forecasting of collision risk and root causes of the potential collision.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: November 9, 2021
    Assignee: International Business Machines Corporation
    Inventors: Ambhighainath Ganesan, Sherif A. Goma, Chelsea Grindle, Dakota Fried, Kevin Chang, Raphael Ezry
  • Publication number: 20210342881
    Abstract: In a promotion offering system, a promotion offering may be presented to a consumer on more than one occasion. The previous presentation of the promotion to the consumer may affect a subsequent presentation of the same promotion to the same consumer. The present invention provides an apparatus and method for analyzing the effect a previous presentation of a promotion may have on a consumer when the promotion is presented to the consumer at a subsequent time.
    Type: Application
    Filed: May 20, 2021
    Publication date: November 4, 2021
    Inventors: Michalis Potamias, Amit Aggarwal, Xiaolei Li, David Thacker, Kevin Chang
  • Publication number: 20210326921
    Abstract: A promotion system for determining a deficiency in promotion data and correcting for the deficiency is disclosed. Issuing offers from a promotion program results in promotion data being generated. The promotion data may be analyzed to determine an acceptance rate of the offers. The promotion system may compare whether the acceptance rate is above a predetermined threshold, but has a confidence level that is less than a confidence rate threshold. In that event, the promotion system may issue additional offers in order to increase the confidence level associated with the acceptance rate by a predetermined amount.
    Type: Application
    Filed: May 5, 2021
    Publication date: October 21, 2021
    Inventors: Kevin Chang, Amit Aggarwal
  • Publication number: 20210264790
    Abstract: A collision avoidance and road safety system is applied to a road network comprised of a plurality of road segments for a location to produce real time or dynamic forecasting of collision risk and root causes of the potential collision.
    Type: Application
    Filed: February 26, 2020
    Publication date: August 26, 2021
    Inventors: Ambhighainath Ganesan, Sherif A. Goma, Chelsea Grindle, Dakota Fried, Kevin Chang, Raphael Ezry
  • Patent number: 11068930
    Abstract: In a promotion offering system, a promotion offering may be presented to a consumer on more than one occasion. The previous presentation of the promotion to the consumer may affect a subsequent presentation of the same promotion to the same consumer. The present invention provides an apparatus and method for analyzing the effect a previous presentation of a promotion may have on a consumer when the promotion is presented to the consumer at a subsequent time.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: July 20, 2021
    Assignee: GROUPON, INC.
    Inventors: Michalis Potamias, Amit Aggarwal, Xiaolei Li, David Thacker, Kevin Chang
  • Publication number: 20210209642
    Abstract: A promotion offering system and method is disclosed. The promotion offering system and method selects consumers for a test promotion that has one or more attributes, and is configured to generate test data for multiple consumer groupings. The promotion offering system and method may use the test data in analyzing whether to send a promotion to a consumer. For example, the promotion offering system and method may use one algorithm to generate a list of ranked promotions, and may use the test data in order to adjust the list of ranked promotions (such as replacing a highest ranked promotion with another promotion).
    Type: Application
    Filed: January 21, 2021
    Publication date: July 8, 2021
    Inventors: David THACKER, Amit AGGARWAL, Kevin CHANG