Patents by Inventor Weiping Li

Weiping Li 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: 20210048376
    Abstract: A sampling probe, an automatic sampling device, and a container detection system are provided. The sampling probe includes: a mounting base; a housing mounted on the mounting base, a first accommodation chamber having an opening being defined in the housing, and an exhaust hole in communication with the first accommodation chamber and outside of the housing being formed in the housing; a coupling portion formed on an outer edge of the opening of the first accommodation chamber and formed to be hermetically coupled with an air outlet of a container; and a suction device mounted on the housing and configured to suck gas in the container into the first accommodation chamber through the air outlet. The sampling probe may collect the odor of toxic and harmful gases/hazardous chemicals inside the container at the air outlet of the container, without destroying the overall structure of the container.
    Type: Application
    Filed: August 10, 2020
    Publication date: February 18, 2021
    Applicants: NUCTECH COMPANY LIMITED, Tsinghua University
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Jianmin LI, Shangmin SUN, Yaohong LIU, Weiping ZHU, Qiufeng MA, Ge LI, Biao CAO, Zheng LIANG, Ying LI, Yu HU
  • Patent number: 10902734
    Abstract: Systems, devices, and methods are provided for managing flight restriction regions. The flight restriction regions of the present disclosure may comprise a plurality of distinct levels and may comprise releasable flight restriction regions. The releasable flight restriction regions may be released based on authentication of an operator of a UAV.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: January 26, 2021
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Brendan Schulman, Bingzhen Yang, Xinan Xu, Shunnian Li, Weiping Huang, Jian Zhao, Pingfa Ai
  • Patent number: 10895593
    Abstract: The present disclosure provides a parameter selection method, apparatus, and computer readable storage medium for an insulation detection circuit. The parameter selection method includes determining an allowable injection frequency range of an AC signal to be injected, according to a predetermined resistance range of an insulation resistance of the power battery under test and a predetermined resistance calculation cycle of the insulation resistance; and selecting an output frequency of the signal generation module according to a lowest frequency to be generated by the signal generation module and the allowable injection frequency range.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: January 19, 2021
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Wei Zhang, Zhimin Dan, Yizhen Hou, Meng Li, Weiping Sun, Teng Yu
  • Publication number: 20210003385
    Abstract: Disclosed herein are self-mixing interferometry (SMI) sensors, such as may include vertical cavity surface emitting laser (VCSEL) diodes and resonance cavity photodetectors (RCPDs). Structures for the VCSEL diodes and RCPDs are disclosed. In some embodiments, a VCSEL diode and an RCPD are laterally adjacent and formed from a common set of semiconductor layers epitaxially formed on a common substrate. In some embodiments, a first and a second VCSEL diode are laterally adjacent and formed from a common set of semiconductor layers epitaxially formed on a common substrate, and an RCPD is formed on the second VCSEL diode. In some embodiments, a VCSEL diode may include two quantum well layers, with a tunnel junction layer between them. In some embodiments, an RCPD may be vertically integrated with a VCSEL diode.
    Type: Application
    Filed: June 26, 2020
    Publication date: January 7, 2021
    Inventors: Fei Tan, Arnaud Laflaquiere, Chin Han Lin, Keith Lyon, Marc A. Drader, Weiping Li
  • Patent number: 10845490
    Abstract: The present disclosure relates to systems and methods for heat transfer and cooling in PET. The system may include a gantry including a gantry forming a detection tunnel; a detector mounted to the gantry, and positioned in a circumference of the detection tunnel; a heat transfer device thermally coupled with the detector and configured to transfer heat generated by the detector; and a cooling device thermally coupled to the heat transfer device, and configured to cool the heat transfer device.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: November 24, 2020
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Hao Yan, Wei Zhang, Huawei Jiang, Shigang Su, Miao Li, Hongjun Zhang, Weiping Liu
  • Publication number: 20200355685
    Abstract: The present invention discloses a reagent set for detecting interactions between biomolecules and their regulatory factors and applications. One reagent set disclosed in the present invention consists of three reagents named A, B and C; the reagent A is formed by connecting a biomolecule R and a biomolecule X; the reagent B contains a biomolecule L; there is an interaction between the biomolecule R and the biomolecule L, and a phase transition occurs when the biomolecule R and the biomolecule L interact; the reagent C is formed by connecting a reporter group JIA with a biomolecule named XL.
    Type: Application
    Filed: November 1, 2018
    Publication date: November 12, 2020
    Inventors: Pilong LI, Min ZHOU, Jing WANG, Jian LI, Weiping LI, Liang WANG, Rongbo WU
  • Publication number: 20200313391
    Abstract: An optoelectronic device includes a semiconductor substrate. A first set of thin-film layers is disposed on the substrate and defines a lower distributed Bragg-reflector (DBR) stack. A second set of thin-film layers is disposed over the lower DBR stack and defines an optical emission region, which is contained in a mesa defined by multiple trenches, which are disposed around the optical emission region without fully surrounding the optical emission region. A third set of thin-film layers is disposed over the optical emission region and defines an upper DBR stack. Electrodes are disposed around the mesa in gaps between the trenches and are configured to apply an excitation current to the optical emission region.
    Type: Application
    Filed: March 9, 2020
    Publication date: October 1, 2020
    Inventors: Weiping Li, Arnaud Laflaquière, Xiaolong Fang
  • Publication number: 20200266608
    Abstract: An optoelectronic device includes a semiconductor substrate and an array of optoelectronic cells, formed on the semiconductor substrate. The cells include first epitaxial layers defining a lower distributed Bragg-reflector (DBR) stack; second epitaxial layers formed over the lower DBR stack, defining a quantum well structure; third epitaxial layers, formed over the quantum well structure, defining an upper DBR stack; and electrodes formed over the upper DBR stack, which are configurable to inject an excitation current into the quantum well structure of each optoelectronic cell. A first set of the optoelectronic cells are configured to emit laser radiation in response to the excitation current. In a second set of the optoelectronic cells, interleaved with the first set, at least one element of the optoelectronic cells, selected from among the epitaxial layers and the electrodes, is configured so that the optoelectronic cells in the second set do not emit the laser radiation.
    Type: Application
    Filed: May 6, 2020
    Publication date: August 20, 2020
    Inventors: Chin Han Lin, Weiping Li, Xiaofeng Fan
  • Patent number: 10730833
    Abstract: Described is a method to make diindolylmethanes and indolyl/pyrrolylmethanes, The method includes the steps of contacting an ether comprising an arylpropargyl moiety and an amine-protected, substituted or unsubstituted aniline moiety with a substituted or unsubstituted indol or a substituted or unsubstituted pyrrole, in the presence of a metal-containing catalyst, for a time and at a temperature to cause an annulation/arylation cascade reaction that yields a diindolylmethane or a indolyl/pyrrolylmethane. The resulting compounds are effective to modulate activity of arylhydrocarbon receptors, to inhibit activity of PCSK9, and to stimulate secretion of glucagon-like peptide 1 in mammals.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: August 4, 2020
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Weiping Tang, Xiaoxun Li, Dongxu Shu, Gabrielle N. Winston-McPherson
  • Publication number: 20200240961
    Abstract: The present disclosure discloses a gas chromatograph-ion mobility spectrometry combined equipment, including: a gas chromatograph device for pre-separating a to-be-detected sample to form a pre-separated sample; an ion mobility spectrometry device in fluid communication with an outlet of the gas chromatograph device for detecting the pre-separated sample; and a gas circulating device in fluid communication with a discharged gas interface of the ion mobility spectrometry device for processing a discharged gas from the ion mobility spectrometry device, wherein the gas circulating device is further in gas communication with the gas chromatograph device for conveying a part of the discharged gas to the gas chromatograph device to serve as a carrier gas, which drives the to-be-detected sample to enter the gas chromatograph device. The miniaturization and the portability of the gas chromatograph-ion mobility spectrometry combined equipment are improved.
    Type: Application
    Filed: December 16, 2019
    Publication date: July 30, 2020
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Weiping ZHU, Yaohong LIU, Qiufeng MA, Ge LI, Biao CAO, Lili YAN
  • Publication number: 20200228361
    Abstract: A multicast packet transmission method, apparatus, and system, where the method is applied to a multicast ring network and the method includes receiving, by a first network node in the multicast ring network through a first path in a clockwise direction of the multicast ring network, a first multicast packet from a second network node in the multicast ring network, receiving, by the first network node through a second path in an anticlockwise direction of the multicast ring network, a second multicast packet from the second network node, where a payload of the first multicast packet is the same as a payload of the second multicast packet, and forwarding, by the first network node, the first multicast packet or the second multicast packet to at least one multicast destination device connected to the first network node.
    Type: Application
    Filed: March 26, 2020
    Publication date: July 16, 2020
    Inventors: Yuanlong Jiang, Chunrong Li, Yongjian Hu, Weiping Xu
  • Patent number: 10705347
    Abstract: A light-emitting device includes a semiconductor substrate, a surface-emitting semiconductor light source on the semiconductor substrate, a monolithic first dielectric, and a second dielectric. The monolithic first dielectric is transparent to light emitted by the light source and includes first and second micro-lenses adjacent an aperture of the light source and having axes parallel to and offset from an axis of a beam of light emitted by the light source, and a saddle-shaped lens over the aperture of the light source. The saddle-shaped lens connects the first and second micro-lenses and reshapes the beam of light emitted by the light source to have a high aspect ratio. The second dielectric is transparent to light emitted by the light source and encapsulates a light emission surface of the saddle-shaped lens. The second dielectric has a higher refractive index than the monolithic first dielectric.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: July 7, 2020
    Assignee: Apple Inc.
    Inventors: Tong Chen, Wenrui Cai, Albert P. Heberle, Weiping Li
  • Publication number: 20200208238
    Abstract: A method for comprehensively processing noble lead provided and utilizes two instances of vacuum distillation to realize an open circuit of arsenic, lead, antimony and bismuth and the high-efficiency enrichment of precious metals of gold and silver, and can obtain elemental arsenic, a lead-bismuth-antimony alloy, a silver alloy and a copper alloy, respectively. The lead-bismuth-antimony alloy, the silver alloy and the copper alloy are processed by oxidation refining, electrorefining and chlorination refining to obtain refined lead, refined antimony, antimony trioxide, electrolytic silver and electrolytic copper, and to realize gold enrichment. The entire process has advantages of high metal direct yield, low energy consumption, short flow chart, simple equipment, etc., and vacuum distillation belongs to a physical process in which the alloy can be separated only by means of the difference in saturated vapor pressure between the metals, without generation of wastewater, waste gas and waste residue.
    Type: Application
    Filed: March 19, 2019
    Publication date: July 2, 2020
    Inventors: Bin Yang, Dachun Liu, Wenlong Jiang, Guozheng Zha, Baoqiang Xu, Weiping Dai, Yifu Li, Qingchun Yu, Xiumin Chen, Hongwei Yang, Yang Tian, Yong Deng, Fei Wang, Heng Xiong, Jia Yang, Tao Qu, Lingxin Kong
  • Publication number: 20200209192
    Abstract: Embodiments of the present disclosure provide an ion mobility spectrometer device. The ion mobility spectrometer device includes: an ion mobility tube, a sampling device, and a sampling and circulating gas path. The sampling device includes a solid sample desorption device and a gas sampling device. The solid sample desorption device is configured to process the solid sample into a first mixed gas containing the solid sample, and the gas sampling device is configured to process the gas sample into a second mixed gas containing the gas sample. The sampling and circulating gas path is configured to transfer the first mixed gas and/or the second mixed gas into the ion mobility tube for detection.
    Type: Application
    Filed: December 26, 2019
    Publication date: July 2, 2020
    Applicants: NUCTECH COMPANY LIMITED, Tsinghua University
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Jianmin LI, Yaohong LIU, Weiping ZHU, Qiufeng MA, Biao CAO, Ge LI, Wei WANG, Lili YAN, Guangqin LI
  • Patent number: 10699887
    Abstract: Embodiments of the present disclosure relate to a preparation and feed apparatus of a standard sample for calibration of a trace-analysis instrument, and especially to a preparation and feed apparatus of a standard sample for calibration of a gas chromatograph-ion mobility spectrometer. When the trace-analysis instrument is being calibrated by taking advantage of the preparation and feed apparatus according to embodiments of the disclosure, it is unnecessary to use an additional dedicated tool and steps to prepare the sample for testing and to use an organic solvent or a dedicated sample application/dispensing tool, resulting in that the trace-analysis instrument is simple and convenient to carry and use, and the substance for calibration is also convenient to store and exchange; moreover, the trace-analysis instrument is also safe, reliable and environmentally friendly.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: June 30, 2020
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Qingjun Zhang, Yuanjing Li, Ziran Zhao, Weiping Zhu, Nan Bai, Qiufeng Ma
  • Patent number: 10700493
    Abstract: An optoelectronic device includes a semiconductor substrate and an array of optoelectronic cells, formed on the semiconductor substrate. The cells include first epitaxial layers defining a lower distributed Bragg-reflector (DBR) stack; second epitaxial layers formed over the lower DBR stack, defining a quantum well structure; third epitaxial layers, formed over the quantum well structure, defining an upper DBR stack; and electrodes formed over the upper DBR stack, which are configurable to inject an excitation current into the quantum well structure of each optoelectronic cell. A first set of the optoelectronic cells are configured to emit laser radiation in response to the excitation current. In a second set of the optoelectronic cells, interleaved with the first set, at least one element of the optoelectronic cells, selected from among the epitaxial layers and the electrodes, is configured so that the optoelectronic cells in the second set do not emit the laser radiation.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: June 30, 2020
    Assignee: APPLE INC.
    Inventors: Chin Han Lin, Weiping Li, Xiaofeng Fan
  • Publication number: 20200067058
    Abstract: The present application discloses an electric connection assembly having a support and a connector, wherein the support comprises a support body; the support body is provided with a mounting groove; the connector is configured to be in contact electrical connection with a mating connector; the connector comprises a mounting part; part or all of the mounting part is detachably received within the mounting groove; the support and the connector are formed separately and connected to each other. Compared with the prior art, the electric connection assembly of the present disclosure implements the function of supporting, holding and assembling integrally the corresponding connectors by means of the support provided with a mounting groove. Correspondingly, the entire structure of the electric connection assembly is simplified and convenient to be assembled.
    Type: Application
    Filed: August 23, 2019
    Publication date: February 27, 2020
    Inventors: Litao DONG, Ziwei LI, Weiping ZHAO, Haifeng LIU
  • Publication number: 20200044439
    Abstract: A current limiting circuit for controlling current from a power supply to a load having a capacitance includes an inductor, a transistor coupled in a current path with the inductor, and a control circuit. The transistor includes a control terminal. The control circuit is coupled to sense a voltage across the inductor and coupled to the control terminal of the transistor. The control circuit is configured to turn off the transistor when the voltage across the inductor is greater than a threshold to restrict current from a power supply, and turn on the transistor when a defined parameter is met to allow current from the power supply to charge the load capacitance. Other example current limiting circuits are also disclosed.
    Type: Application
    Filed: December 26, 2017
    Publication date: February 6, 2020
    Applicants: Astec International Limited, Astec International Limited
    Inventors: Weiping LI, Weijia YAN, Wenjian LIAO, Xin ZHANG
  • Patent number: 10539294
    Abstract: A blind spot warning indication device for an exterior mirror of an automobile includes a light guide member. A plurality of wedge-shaped bosses are arranged side by side along an axis on the light guide member corresponding to a setting direction of the PCB. One side of each of the plurality of wedge-shaped bosses has a light incident end surface for aligning with a corresponding light source. An upper surface of each of the plurality of wedge-shaped bosses includes a light reflecting side having an optical pattern for reflecting and scattering. The reflecting side having the optical pattern is an upwardly convex arc surface. A lower surface of the wedge-shaped boss has a light emitting side. The outermost wedge-shaped boss has the largest curvature of the light-reflecting side compared to the other wedge-shaped bosses arranged side by side, and the outermost wedge-shaped boss has the longest length of the light-emitting side compared to the other wedge-shaped bosses arranged side by side.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: January 21, 2020
    Assignees: SMR Patents S.à.r.l., Ningbo SMR Huaxiang Automotive Mirrors Ltd.
    Inventors: Norbert Kürschner, Daniel Fritz, Yifei Feng, Yonggang Li, Weiping Lu
  • Patent number: 10539531
    Abstract: A detection apparatus and a detection method are disclosed. In one aspect, the detection apparatus includes a sampling device for collecting samples to be checked. It further includes a sample pre-processing device configured to pre-process the sample from the sampling device. It further includes a sample analyzing device for separating samples from the pre-processing device and for analyzing the separated samples. The detection apparatus is miniaturized and highly precise, and is capable of quickly and accurately detecting gaseous phase or particulate substances, and it has applications for safety inspections at airports, ports, and subway stations.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: January 21, 2020
    Assignee: Nuctech Company Limited
    Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Huishao He, Qiufeng Ma, Weiping Zhu, Xiang Zou, Jianping Chang, Song Liang