Patents by Inventor Zheng Lu

Zheng Lu 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: 20230323564
    Abstract: Nitrogen-doped CZ silicon crystal ingots and wafers sliced therefrom are disclosed that provide for post epitaxial thermally treated wafers having oxygen precipitate density and size that are substantially uniformly distributed radially and exhibit the lack of a significant edge effect. Methods for producing such CZ silicon crystal ingots are also provided by controlling the pull rate from molten silicon, the temperature gradient and the nitrogen concentration. Methods for simulating the radial bulk micro defect size distribution, radial bulk micro defect density distribution and oxygen precipitation density distribution of post epitaxial thermally treated wafers sliced from nitrogen-doped CZ silicon crystals are also provided.
    Type: Application
    Filed: June 14, 2023
    Publication date: October 12, 2023
    Inventors: Zheng Lu, Gaurab Samanta, Tse-Wei Lu, Feng-Chien Tsai
  • Publication number: 20230304893
    Abstract: A detection system includes a loadcell connected to a gear and motor of a crystal puller apparatus to measure force applied to the gear in a time domain. The data is analyzed though a Fourier transform to obtain data in the frequency domain. The frequency domain data includes an amplitude which corresponds to mechanical wear of the gear. The time domain data is compared against a threshold amplitude to determine if the gears have mechanical wear such that preventative maintenance can be performed on the motor.
    Type: Application
    Filed: March 16, 2023
    Publication date: September 28, 2023
    Inventors: Zheng Lu, William L. Luter, Bashar Ahmed Barghouti, Wei-Ru Li
  • Patent number: 11753741
    Abstract: Nitrogen-doped CZ silicon crystal ingots and wafers sliced therefrom are disclosed that provide for post epitaxial thermally treated wafers having oxygen precipitate density and size that are substantially uniformly distributed radially and exhibit the lack of a significant edge effect. Methods for producing such CZ silicon crystal ingots are also provided by controlling the pull rate from molten silicon, the temperature gradient and the nitrogen concentration. Methods for simulating the radial bulk micro defect size distribution, radial bulk micro defect density distribution and oxygen precipitation density distribution of post epitaxial thermally treated wafers sliced from nitrogen-doped CZ silicon crystals are also provided.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: September 12, 2023
    Assignee: GlobalWafers Co., Ltd.
    Inventors: Zheng Lu, Gaurab Samanta, Tse-Wei Lu, Feng-Chien Tsai
  • Publication number: 20230272552
    Abstract: Ingot puller apparatus that include a silicon feed tube for adding solid silicon to a crucible assembly are disclosed. The silicon feed tubes include a conduit portion having an inner diameter and a kick plate disposed below the conduit portion. The kick plate extends across at least 60% of the inner diameter of the conduit portion.
    Type: Application
    Filed: February 2, 2023
    Publication date: August 31, 2023
    Inventors: Chun-Sheng Wu, Hong-Huei Huang, Wei-Chen Chou, Chen-Yi Lin, Feng-Chien Tsai, Zheng Lu
  • Publication number: 20230248316
    Abstract: Various methods and systems are provided for a table support for a mobile imaging system. In one example, a table support for a mobile imaging system includes a fixture comprising a frame and a plurality of posts coupled to the frame, a table interface comprising a set of table flanges configured to be attached to a patient table of the mobile imaging system and a set of complementary table flange acceptors coupled to a top surface of the frame of the fixture, and a floor interface including a set of floor brackets removably coupleable to a set of floor panels configured to be attached to a floor of a unit configured to house the mobile imaging system, each floor bracket coupled to two respective posts of the plurality of posts.
    Type: Application
    Filed: February 10, 2022
    Publication date: August 10, 2023
    Inventors: Weiji Yan, Jiaqi Li, Zheng Lu
  • Publication number: 20230202950
    Abstract: Provided herein is an alkane dehydrogenation catalyst, a method of manufacturing an alkane dehydrogenation catalyst, and a method of converting alkanes to alkenes.
    Type: Application
    Filed: March 3, 2023
    Publication date: June 29, 2023
    Inventors: Christopher L. Marshall, Zheng Lu, Jeffrey W. Elam, Christopher Nicholas, Paul T. Barger, Martha Leigh Abrams, Arrelaine Dameron, Ryon W. Tracy
  • Publication number: 20230195953
    Abstract: A method for determining a performance of a subgrade of an expressway section and a processing device thereof are used to accurately calculate a stress, a displacement, a velocity and an acceleration at any position inside the subgrade while analyzing the performance of the subgrade of the target expressway section, in full consideration of the moving speed and vibration characteristics of the vehicle load, the layered characteristics of the expressway and the unsaturated characteristics of the subgrade soil.
    Type: Application
    Filed: November 12, 2022
    Publication date: June 22, 2023
    Applicant: INSTITUTE OF ROCK AND SOIL MECHANICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Zheng LU, Chuxuan TANG, Hailin YAO, Yang ZHAO, Jie LIU
  • Publication number: 20230131570
    Abstract: A method for determining mechanical performance of the road includes the following: acquiring an initial subgrade reaction modulus ks of a subgrade of a target road section by using a field plate-bearing test process; acquiring a preset load p of the subgrade and geocell parameters of a preset geocell of the subgrade; calculating a composite subgrade reaction modulus kr of the subgrade on condition that the roadbed is under a reinforced working condition by a composite modulus calculation formula; calculating an equivalent thickness RP of the roadbed under the reinforced working condition by a depth adjustment calculation formula; and outputting the composite subgrade reaction modulus kr and the equivalent thickness RP.
    Type: Application
    Filed: June 26, 2022
    Publication date: April 27, 2023
    Applicant: INSTITUTE OF ROCK AND SOIL MECHANICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Zheng LU, Yang ZHAO, Hailin YAO, Chuxuan TANG, Jie LIU
  • Patent number: 11623903
    Abstract: Provided herein is an alkane dehydrogenation catalyst, a method of manufacturing an alkane dehydrogenation catalyst, and a method of converting alkanes to alkenes.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: April 11, 2023
    Assignees: UCHICAGO ARGONNE, LLC, FORGE NANO
    Inventors: Christopher L. Marshall, Zheng Lu, Jeffrey W. Elam, Christopher Nicholas, Paul T. Barger, Martha Leigh Abrams, Arrelaine Dameron, Ryon W. Tracy
  • Patent number: 11564633
    Abstract: A state assessment system, a diagnosis and treatment system and a method for operating the diagnosis and treatment system are disclosed. An oscillator model converts a physiological signal of a subject into a defined feature image. A classification model analyzes state information of the subject based on the feature image. An analysis model outputs a treatment suggestion for the subject based on the state information of the subject. An AR projection device projects acupoint positions of a human body onto the subject, for the subject to be treated based on the treatment suggestion.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: January 31, 2023
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chii-Wann Lin, Kuo-Chun Lee, Jung-Chuan Pan, Heng-Jie Wang, Wei-Zheng Lu, Po-An Hsu, Kun-Ta Wu
  • Publication number: 20220403548
    Abstract: Methods for determining suitability of a silicon substrate for epitaxy and/or for determining slip resistance during epitaxy and post-epitaxy thermal treatment are disclosed. The methods involve evaluating different substrates of the epitaxial wafers by imaging the wafer by infrared depolarization. An infrared depolarization parameter is generated for each epitaxial wafer. The parameters may be compared to determine which substrates are well-suited for epitaxial and/or post-epi heat treatments.
    Type: Application
    Filed: June 7, 2022
    Publication date: December 22, 2022
    Inventors: Shan-Hui Lin, Chun-Chin Tu, Zheng Lu
  • Publication number: 20220403549
    Abstract: Methods for determining suitability of Czochralski growth conditions to produce silicon substrates for epitaxy. The methods involve evaluating substrates sliced from ingots grown under different growth conditions (e.g., impurity profiles) by imaging the wafer by infrared depolarization. An infrared depolarization parameter is generated for each epitaxial wafer. The parameters may be compared to determine which growth conditions are well-suited to produce substrates for epitaxial and/or post-epi heat treatments.
    Type: Application
    Filed: June 7, 2022
    Publication date: December 22, 2022
    Inventors: Zheng Lu, Shan-Hui Lin, Chun-Chin Tu, Chi-Yung Chen, Feng-Chien Tsai, Hong-Huei Huang
  • Publication number: 20220337970
    Abstract: A device and method for a user equipment (UE) to implement power savings mechanisms when operating within a significant location. The UE identifies that the UE is at a significant location. The significant location is a location relative to a currently camped cell of a network. At a first time and at the significant location, the UE performs a type of operation related to the network connection. The UE stores information corresponding to the performance of the type of operation at the first time in a profile associated with the significant location. At a second time and at the significant location, the UE performs the type of operation related to the network connection. The performance of the type of operation at the second time is modified based on the information stored in the profile associated with the significant location.
    Type: Application
    Filed: May 12, 2022
    Publication date: October 20, 2022
    Inventors: Srirang A. LOVLEKAR, Murtaza A. SHIKARI, Zheng LU, Pankaj Subhash VASANDANI, Srinivasan NIMMALA, Sethuraman GURUMOORTHY, Viswanath NAGARAJAN, Lakshmi N. KAVURI, Sridhar PRAKASAM, Robert K. KITCHENS, Vijay VENKATARAMAN, Muthukumaran DHANAPAL, Xiangpeng JING
  • Publication number: 20220259763
    Abstract: A system for producing a silicon ingot, the system includes a crystal puller, a pyrometer, an infrared (IR) camera, and a controller. The crystal puller includes a hot zone having one or more components therein, and in which a silicon ingot may be pulled. The pyrometer is positioned to view a region of interest within the hot zone. The IR camera is positioned to view one or more additional regions of interest within the hot zone. The controller is connected to the crystal puller, the pyrometer, and the IR camera. The controller is programmed to control the crystal puller to produce a silicon ingot, receive temperature data of the region of interest within the hot zone from the pyrometer while producing the silicon ingot, and receive IR images of the one or more additional regions of interest from the IR camera while producing the silicon ingot.
    Type: Application
    Filed: February 15, 2022
    Publication date: August 18, 2022
    Inventors: Zheng Lu, Chi-Yung Chen, Hsien-Ta Tseng, Sumeet S. Bhagavat, Vahid Khalajzadeh
  • Publication number: 20220220631
    Abstract: A method for growing a single crystal silicon ingot by the Czochralski method having reduced deviation in diameter is disclosed.
    Type: Application
    Filed: April 3, 2020
    Publication date: July 14, 2022
    Inventors: Tapas Jain, Sumeet S. Bhagavat, Zheng Lu, Feng-Chien Tsai, Hong-Huei Huang
  • Publication number: 20220202442
    Abstract: A computer-assisted needle insertion system and a computer-assisted needle insertion method are provided. The computer-assisted needle insertion method includes: obtaining a first machine learning (ML) model and a second ML model; obtaining a computed tomography (CT) image and a needle insertion path, generating a suggested needle insertion path according to the first ML model, the CT image, and the needle insertion path, and instructing a needle to approach a needle insertion point on a skin of a target, wherein the needle insertion point is located on the suggested needle insertion path; obtaining a breath signal of the target, and estimating whether a future breath state of the target is normal according to the second ML model and the breath signal; and outputting a suggested needle insertion period according to the breath signal in response to determining that the future breath state is normal.
    Type: Application
    Filed: November 23, 2021
    Publication date: June 30, 2022
    Applicant: Industrial Technology Research Institute
    Inventors: Po-An Hsu, Chih-Chi Chang, Chih-Wei Chien, Chia-Pin Li, Kun-Ta Wu, Wei-Zheng Lu
  • Patent number: 11343640
    Abstract: A device and method for a user equipment (UE) to implement power savings mechanisms when operating within a significant location. The UE identifies that the UE is at a significant location. The significant location is a location relative to a currently camped cell of a network. At a first time and at the significant location, the UE performs a type of operation related to the network connection. The UE stores information corresponding to the performance of the type of operation at the first time in a profile associated with the significant location. At a second time and at the significant location, the UE performs the type of operation related to the network connection. The performance of the type of operation at the second time is modified based on the information stored in the profile associated with the significant location.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: May 24, 2022
    Assignee: Apple Inc.
    Inventors: Srirang A. Lovlekar, Murtaza A. Shikari, Zheng Lu, Pankaj Subhash Vasandani, Srinivasan Nimmala, Sethuraman Gurumoorthy, Viswanath Nagarajan, Lakshmi N. Kavuri, Sridhar Prakasam, Robert K. Kitchens, Vijay Venkataraman, Muthukumaran Dhanapal, Xiangpeng Jing
  • Publication number: 20210334114
    Abstract: A method for realizing interaction between a business system and at least one component. Steps include configuring at least one component in a frame system; displaying the frame system configured with the components on the front page of the main business system; by clicking on components displayed on the front page of the main business system, a user jumping from the main business system and logging to a front page of another business system defined by each of the clicked components.
    Type: Application
    Filed: February 27, 2018
    Publication date: October 28, 2021
    Inventor: Zheng Lu
  • Publication number: 20210292258
    Abstract: Provided herein is an alkane dehydrogenation catalyst, a method of manufacturing an alkane dehydrogenation catalyst, and a method of converting alkanes to alkenes.
    Type: Application
    Filed: March 10, 2021
    Publication date: September 23, 2021
    Inventors: Christopher L. Marshall, Zheng Lu, Jeffrey W. Elam, Christopher Nicholas, Paul T. Barger, Leigh Abrams, Arrelaine Dameron, Ryon W. Tracy
  • Patent number: 11111602
    Abstract: Nitrogen-doped CZ silicon crystal ingots and wafers sliced therefrom are disclosed that provide for post epitaxial thermally treated wafers having oxygen precipitate density and size that are substantially uniformly distributed radially and exhibit the lack of a significant edge effect. Methods for producing such CZ silicon crystal ingots are also provided by controlling the pull rate from molten silicon, the temperature gradient and the nitrogen concentration. Methods for simulating the radial bulk micro defect size distribution, radial bulk micro defect density distribution and oxygen precipitation density distribution of post epitaxial thermally treated wafers sliced from nitrogen-doped CZ silicon crystals are also provided.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: September 7, 2021
    Assignee: GlobalWafers Co., Ltd.
    Inventors: Zheng Lu, Gaurab Samanta, Tse-Wei Lu, Feng-Chien Tsai