Patents by Inventor Gen Liu

Gen Liu 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: 20250107137
    Abstract: A lateral power semiconductor device layout and a device structure belong to the technical field of power semiconductor devices. A method for designing a lateral power semiconductor device layout with high integrity and high cell density has the following advantages of reducing a specific on-resistance of the device, increasing a width of a channel per unit area, improving the current capability of the device, optimizing the static characteristic of the device, reducing the area of a drain region and the parasitic capacitance of the device, reducing the delay time of a cell switch caused by an excessively long gate electrode of a traditional finger cell, optimizing the dynamic characteristic of the device, optimizing the cell edge of the device and the curvature effect of a terminal, and reducing the pre-breakdown risk of the device.
    Type: Application
    Filed: December 28, 2023
    Publication date: March 27, 2025
    Applicant: University of Electronic Science and Technology of China
    Inventors: Ming QIAO, Jiawei WANG, Dingxiang MA, Yue GAO, Gen LIU, Shengduo WANG, Yuanqing YE, Bo ZHANG
  • Publication number: 20250100123
    Abstract: An oscillating power tool includes an outer housing having a head portion and a handle portion extending therefrom, an inner housing within the outer housing, a first annular gap between the inner housing and the head portion of the outer housing, and a motor and a drive mechanism having an output shaft that oscillates and defines an output axis. The output shaft extends through an opening in the head portion and defines a second annular gap between the output shaft and the outer housing. The oscillating power tool also includes an over-travel limit member in the first annular gap. In response to relative movement between the inner housing and the outer housing, the over-travel limit member prevents contact between them. The over-travel limit member limits lateral movement of the inner housing relative to the outer housing in a direction transverse to the output axis.
    Type: Application
    Filed: December 10, 2024
    Publication date: March 27, 2025
    Inventors: Jeffrey S. HOLLY, Jacob N. ZIMMERMAN, James C. SITTER, David A. BIERDEMAN, Andrew R. SCHAUER, You Gen LIU
  • Patent number: 12260540
    Abstract: A material completeness detection method configured to detect whether materials of a target object in a physical production line are complete, includes: inputting an image of the target object in the physical production line into a material completeness detection algorithm to acquire a first detection result; inputting a virtual model of the target object in a virtual production line into the material completeness detection algorithm to acquire a second detection result, where the virtual production line is a DT of the physical production line; and acquiring a material completeness detection result of the target object based on the first detection result and the second detection result. The embodiments of the present disclosure can realize efficient and accurate material completeness detection.
    Type: Grant
    Filed: May 20, 2022
    Date of Patent: March 25, 2025
    Assignee: ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
    Inventors: Hao Li, Xinyu Yan, Gen Liu, Haoqi Wang, Zhongshang Zhai, Bing Li, Yuyan Zhang, Yan Liu
  • Patent number: 12186880
    Abstract: An oscillating power tool includes an outer housing, and an inner housing positioned within the outer housing. A motor and a drive mechanism are supported by the inner housing. The drive mechanism includes an output shaft that is rotational in an oscillating manner and that defines an output axis. A damping element is positioned between the inner housing and the outer housing through which the inner housing is mounted to the outer housing, thereby attenuating vibration transmitted to the outer housing from the inner housing. An over-travel limit member is positioned between the inner housing and the outer housing. In response to relative movement between the inner housing and the outer housing while the power tool is in use, the limit member is configured to prevent direct contact between the inner housing and the outer housing, inhibiting vibration produced by the motor and/or drive mechanism from bypassing the damping element.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: January 7, 2025
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: Jeffrey S. Holly, Jacob N. Zimmerman, James C. Sitter, David A Bierdeman, Andrew R. Schauer, You Gen Liu
  • Publication number: 20240375260
    Abstract: An oscillating power tool has a housing including a handle portion defining a handle axis and a head portion defining an output axis that is perpendicular to the handle axis. The head portion includes a front face intersected by the handle axis. A drive mechanism includes an output shaft configured to oscillate about the output axis in a rotational manner in response receiving torque from a motor. A lighting assembly is configured to illuminate a workpiece in front of the head portion of the housing. The lighting assembly includes a lens arranged on the front face of the housing, a holder coupled to the lens, a plurality of printed circuit boards supported by the holder, and an LED arranged on each of the printed circuit boards. In response to being activated, the LEDs are configured to project a wide-angle beam of light through the lens.
    Type: Application
    Filed: July 22, 2024
    Publication date: November 14, 2024
    Inventors: Jeffrey S. Holly, Jacob N. Zimmerman, James C. Sitter, David A. Bierdeman, Andrew R. Schauer, Michael J. Panetta, You Gen Liu
  • Publication number: 20240351199
    Abstract: A method for intelligently controlling a mechanical arm includes building a twin model of a mechanical arm, and extracting a state parameter and an action parameter corresponding to task characteristics from the twin model; determining a reward function corresponding to the task characteristics; training a twin delayed deep deterministic policy gradient (TD3) reinforcement learning model; simulating in the twin model based on a physical state parameter of the mechanical arm by using the TD3 reinforcement learning model, to obtain a controllable parameter; and controlling the mechanical arm to execute a corresponding task by using the controllable parameter. The TD3 reinforcement learning model is built based on the state parameter and the action parameter corresponding to the task characteristics and the reward function corresponding to the task characteristics, which can adapt to a dynamically changing environment and requirements for multiple tasks.
    Type: Application
    Filed: June 11, 2024
    Publication date: October 24, 2024
    Applicant: ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
    Inventors: Hao LI, Gen LIU, Yonglei WU, Haoqi WANG, Linli LI, Xiaoyu WEN, Shizhong WEI, Yuyan ZHANG, Like ZHANG, Weifei GUO
  • Publication number: 20240354657
    Abstract: A method for digital twin virtual-reality synchronization mapping of a mechanical arm comprises acquiring a virtual mechanical arm model built based on an actual mechanical arm in a virtual environment, where the virtual mechanical arm model is configured to map the actual mechanical arm; acquiring real motion information collected when the actual mechanical arm moves; constructing a training set and a test set based on the real motion information; training a target multilayer perceptron model based on the training set, and testing the target multilayer perceptron model based on the test set, where the target multilayer perceptron model is configured to predict a motion of the virtual mechanical arm model in the virtual environment; and deploying the target multilayer perceptron model on the actual mechanical arm when the target multilayer perceptron model meets a preset condition. According to this method, operation accuracy and efficiency of the mechanical arm are improved.
    Type: Application
    Filed: June 11, 2024
    Publication date: October 24, 2024
    Applicant: ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
    Inventors: Hao LI, Gen LIU, Xingyou HE, Haoqi WANG, Linli LI, Xiaoyu WEN, Shizhong WEI, Yuyan ZHANG, Weifei GUO, Wenchao YANG
  • Patent number: 12097603
    Abstract: An oscillating power tool has a housing including a handle portion defining a handle axis and a head portion defining an output axis that is perpendicular to the handle axis. The head portion includes a front face intersected by the handle axis. A drive mechanism includes an output shaft configured to oscillate about the output axis in a rotational manner in response receiving torque from a motor. A lighting assembly is configured to illuminate a workpiece in front of the head portion of the housing. The lighting assembly includes a lens arranged on the front face of the housing, a holder coupled to the lens, a plurality of printed circuit boards supported by the holder, and an LED arranged on each of the printed circuit boards. In response to being activated, the LEDs are configured to project a wide-angle beam of light through the lens.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: September 24, 2024
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: Jeffrey S. Holly, Jacob N. Zimmerman, James C. Sitter, David A. Bierdeman, Andrew R. Schauer, Michael J. Panetta, You Gen Liu
  • Patent number: 12039757
    Abstract: Methods and systems for associating labels between multiple sensors. One of the methods includes generating user interface presentation data that, when presented on a user device, causes the user device to display a user interface that: displays the images in the sequence of images and data identifying the first and second object tracks, and is configured to receive user inputs that associate first object tracks with second object tracks; and providing the user interface presentation data for presentation on the user device.
    Type: Grant
    Filed: December 30, 2021
    Date of Patent: July 16, 2024
    Assignee: Waymo LLC
    Inventors: Jeffrey Sham, Yulai Shen, Sandro Alighiero Young, Gen Liu
  • Patent number: 11829116
    Abstract: An intelligent identification and warning method for an uncertain object of a production line in a digital twin environment, includes: establishing a model library for uncertain physical objects from a non-production line system; adding attribute data to the uncertain physical objects from the non-production line system; importing an established model library and added attribute data for the uncertain physical objects from the non-production line system into a model library of an existing DT production line system; performing auto-detection on an uncertain physical object entering a production line system; performing auto-detection on an actual size of the uncertain physical object entering the production line system; warning a danger for an unsafe object by means of voice prompting, system alarming and information pushing; matching a corresponding three-dimensional (3D) model in the established model library for a safe object; and loading a matched 3D model to the DT production line system.
    Type: Grant
    Filed: May 2, 2022
    Date of Patent: November 28, 2023
    Assignee: ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
    Inventors: Haoqi Wang, Hao Li, Rongjie Huang, Gen Liu, Hongyu Du, Bing Li, Xiaoyu Wen, Yuyan Zhang, Chunya Sun
  • Publication number: 20230377123
    Abstract: A material completeness detection method configured to detect whether materials of a target object in a physical production line are complete, includes: inputting an image of the target object in the physical production line into a material completeness detection algorithm to acquire a first detection result; inputting a virtual model of the target object in a virtual production line into the material completeness detection algorithm to acquire a second detection result, where the virtual production line is a DT of the physical production line; and acquiring a material completeness detection result of the target object based on the first detection result and the second detection result. The embodiments of the present disclosure can realize efficient and accurate material completeness detection.
    Type: Application
    Filed: May 20, 2022
    Publication date: November 23, 2023
    Applicant: ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
    Inventors: Hao LI, Xinyu YAN, Gen LIU, Haoqi WANG, Zhongshang ZHAI, Bing LI, Yuyan ZHANG, Yan LIU
  • Publication number: 20230211490
    Abstract: An oscillating power tool includes an outer housing, and an inner housing positioned within the outer housing. A motor and a drive mechanism are supported by the inner housing. The drive mechanism includes an output shaft that is rotational in an oscillating manner and that defines an output axis. A damping element is positioned between the inner housing and the outer housing through which the inner housing is mounted to the outer housing, thereby attenuating vibration transmitted to the outer housing from the inner housing. An over-travel limit member is positioned between the inner housing and the outer housing. In response to relative movement between the inner housing and the outer housing while the power tool is in use, the limit member is configured to prevent direct contact between the inner housing and the outer housing, inhibiting vibration produced by the motor and/or drive mechanism from bypassing the damping element.
    Type: Application
    Filed: June 10, 2021
    Publication date: July 6, 2023
    Inventors: Jeffrey S. HOLLY, Jacob N. ZIMMERMAN, James C. SITTER, David A. BIERDEMAN, Andrew R. SCHAUER, You Gen LIU
  • Publication number: 20230215044
    Abstract: Methods and systems for associating labels between multiple sensors. One of the methods includes generating user interface presentation data that, when presented on a user device, causes the user device to display a user interface that: displays the images in the sequence of images and data identifying the first and second object tracks, and is configured to receive user inputs that associate first object tracks with second object tracks; and providing the user interface presentation data for presentation on the user device.
    Type: Application
    Filed: December 30, 2021
    Publication date: July 6, 2023
    Inventors: Jeffrey Sham, Yulai Shen, Sandro Alighiero Young, Gen Liu
  • Publication number: 20230053646
    Abstract: The disclosure provides a photodegradant for carbamazepine, a method and an apparatus for degrading carbamazepine, and relates to the technical filed of degradation of organic pollutants. The photodegradant provided by the disclosure includes a composite solution of a persulfate and a sulfite. In the disclosure, ultraviolet (UV), the persulfate (PS) and the sulfite (S(IV)) are combined to degrade carbamazepine, during which hydrogen sulfate (HSO3?) generated by the hydrolysis of sulfite in water participates in the reaction to produce a large amount of SO4?? and HO?, thus improving the degradation rate and degradation efficiency of carbamazepine. The composite advanced oxidation system, i.e., the ultraviolet/persulfate/sulfite (UV/PS/S(IV)) system, provided by the disclosure has stronger oxidizability than the ultraviolet/persulfate (UV/PS) system and the ultraviolet/sulfite (UV/S(IV)) system, and results in high degradation rate and high degradation efficiency of carbamazepine.
    Type: Application
    Filed: November 5, 2021
    Publication date: February 23, 2023
    Inventors: Yingzi LIN, Hao YANG, Siwen LI, Gen LIU, Hao LI, Mingliang ZHOU, Yuhang WEI
  • Publication number: 20230039454
    Abstract: An intelligent identification and warning method for an uncertain object of a production line in a digital twin environment, includes: establishing a model library for uncertain physical objects from a non-production line system; adding attribute data to the uncertain physical objects from the non-production line system; importing an established model library and added attribute data for the uncertain physical objects from the non-production line system into a model library of an existing DT production line system; performing auto-detection on an uncertain physical object entering a production line system; performing auto-detection on an actual size of the uncertain physical object entering the production line system; warning a danger for an unsafe object by means of voice prompting, system alarming and information pushing; matching a corresponding three-dimensional (3D) model in the established model library for a safe object; and loading a matched 3D model to the DT production line system.
    Type: Application
    Filed: May 2, 2022
    Publication date: February 9, 2023
    Applicant: ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
    Inventors: Haoqi WANG, Hao LI, Rongjie HUANG, Gen LIU, Hongyu DU, Bing LI, Xiaoyu WEN, Yuyan ZHANG, Chunya SUN
  • Publication number: 20220347829
    Abstract: An oscillating power tool has a housing including a handle portion defining a handle axis and a head portion defining an output axis that is perpendicular to the handle axis. The head portion includes a front face intersected by the handle axis. A drive mechanism includes an output shaft configured to oscillate about the output axis in a rotational manner in response receiving torque from a motor. A lighting assembly is configured to illuminate a workpiece in front of the head portion of the housing. The lighting assembly includes a lens arranged on the front face of the housing, a holder coupled to the lens, a plurality of printed circuit boards supported by the holder, and an LED arranged on each of the printed circuit boards. In response to being activated, the LEDs are configured to project a wide-angle beam of light through the lens.
    Type: Application
    Filed: June 10, 2021
    Publication date: November 3, 2022
    Inventors: Jeffrey S. Holly, Jacob N. Zimmerman, James C. Sitter, David A. Bierdeman, Andrew R. Schauer, Michael J. Panetta, You Gen Liu
  • Patent number: 11455767
    Abstract: An intelligent material completeness detection and configuration method based on digital twin and augmented reality (AR) includes: constructing a digital twin model base and knowledge base of an incomplete material; importing the digital twin model base and knowledge base of the incomplete material respectively into a model database and a knowledge database in a digital twin system database; sending materials to be detected into a vision-based material completeness detection platform, sorting out an incomplete material, acquiring corresponding data, and importing the data into an incomplete material information database; performing, based on an AR device, perception and reconstruction of incomplete material configuration; matching a configuration plan of the incomplete material in a digital twin relational database, and performing a virtual-real fusion in the AR device; and allowing, a worker to rapidly and accurately find a location and problem type of the incomplete material and configuration the incomplete
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: September 27, 2022
    Assignee: ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
    Inventors: Hao Li, Bing Li, Haoqi Wang, Gen Liu, Guizhong Xie, Chunya Sun, Rongjie Huang, Xiaoyu Wen, Yuyan Zhang, Zhongshang Zhai, Fuquan Nie
  • Publication number: 20220026409
    Abstract: The disclosure provides a method and a system for predicting disinfection by-products in drinking water. The method includes: acquiring water age prediction data of the drinking water to be predicted and water quality data of the drinking water to be predicted; inputting the water age prediction data and the water quality data into an adaptive genetic BP neural network model for predicting the disinfection by-products in the drinking water to obtain prediction values of the disinfection by-products in the drinking water. The disinfection by-products in a water supply pipe network can be predicted efficiently and economically by using the method and the system for predicting the disinfection by-products in the drinking water provided by the disclosure.
    Type: Application
    Filed: October 21, 2020
    Publication date: January 27, 2022
    Applicant: Jilin Jianzhu University
    Inventors: Yingzi LIN, Gen LIU, Gaoqi WANG, Daihua ZHANG, Hao YANG, Yuhang WEI, Wanqing LIU
  • Publication number: 20210125200
    Abstract: A method and a system for predicting a medium-long term water demand of a water supply network including: building a gray model; acquiring an urban historical water demand data set; processing the historical water demand data set to obtain a processed water demand data set; inputting the processed water demand data set into the gray model to obtain a medium-long term water demand prediction value; acquiring a medium-long term water demand actual value; obtaining a first prediction error according to the medium-long term water demand prediction value and the medium-long term water demand actual value; inputting the first prediction error into an artificial neutral network model to repeatedly conduct a prediction so as to obtain a second prediction error; predicting a medium-long term water demand of the water supply network according to the medium-long term water demand prediction value and the second prediction error.
    Type: Application
    Filed: December 9, 2019
    Publication date: April 29, 2021
    Applicant: JILIN JIANZHU UNIVERSITY
    Inventors: Yingzi Lin, Gen Liu, Lan Liu, Zeming Zhao, Ang Li, Huan Lin, Ruijun Ren, Yang Zhu
  • Publication number: 20210113992
    Abstract: The present invention provides a biological morph-genetic WO3 photocatalyst and a preparation method and application thereof, and belongs to the technical field of photocatalysis The preparation method of the present invention includes the following steps: impregnating a rice husk into a tungsten source solution, and roasting an obtained solid material after solid-liquid separation to obtain the biological morph-genetic WO3 photocatalyst.
    Type: Application
    Filed: December 23, 2019
    Publication date: April 22, 2021
    Inventors: Yingzi Lin, Yang Zhu, Ang Li, Huan Lin, Zeming Zhao, Gen Liu