Patents by Inventor Fei Liu

Fei 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).

  • Patent number: 11107755
    Abstract: Packaging methods and structures for lateral high voltage gallium nitride (GaN) devices achieve electrical isolation while also maintaining thermal dissipation. The electrical isolation reduces or eliminates vertical leakage current, improving high voltage performance. The packages may use or be compatible standards such as JEDEC, which reduces packaging cost and facilitates implementation of the packaged devices in conventional circuit design approaches.
    Type: Grant
    Filed: May 10, 2020
    Date of Patent: August 31, 2021
    Inventors: Zhanming Li, Yue Fu, Yan-Fei Liu
  • Patent number: 11108330
    Abstract: In an AC-DC converter having a primary side control circuit, auxiliary power for the control circuit is derived from the converter secondary side through an isolated DC-DC converter. The circuits and methods solve the problem of supplying primary side auxiliary power during light load or no load operation of the AC-DC power converter. Since the output voltage of the AC-DC converter is normally regulated at a fixed level, the auxiliary voltage that is generated by the isolated DC converter is regulated. In some cases the isolated DC-DC converter may not need to be regulated, which simplifies the design and reduces overall cost.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: August 31, 2021
    Assignee: Queen's University at Kingston
    Inventors: Yang Chen, Yan-Fei Liu
  • Patent number: 11098060
    Abstract: The present application relates to a macrocycle containing aminopyrazole and pyrimidine, which is represented by formula (I), a pharmaceutical composition thereof, and a use thereof in inhibiting tropomyosin receptor kinase (Trk) activity and in treating diseases in mammals that are mediated by Trk.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: August 24, 2021
    Assignees: CHIA TAI TIANQING PHARMACEUTICAL GROUP CO., LTD., CENTAURUS BIOPHARMA CO., LTD., LIANYUNGANG RUNZHONG PHARMACEUTICAL CO., LTD.
    Inventors: Liguang Dai, Xiaowei Duan, Yanqing Yang, Xijie Liu, Hongjuan Li, Na Zhao, Yinghui Sun, Fansheng Kong, Jiuqing Zhang, Yizhong Zhu, Ling Yang, Fei Liu
  • Patent number: 11093571
    Abstract: Described are systems and methods that solve localization problems using Machine Learning models to compute country vectors for each linked content item and present content items in response to requests based on the country vectors. For example, a request from a user in Country A may be processed to determine candidate content items responsive to the request and to determine Country A as the country corresponding to the request. The candidate content items may then be processed to determine, for each candidate content item, a country vector corresponding to Country A as indicative of the relevance of the content item to Country A. Content items that are more likely than not to be relevant to the country of the request (e.g., Country A), as indicated by the respective country vector, may be considered as responsive and all other candidate content items discarded.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: August 17, 2021
    Assignee: Pinterest, Inc.
    Inventors: Fei Liu, Jun Liu, Siyang Xie, Yang Xiao
  • Publication number: 20210246119
    Abstract: The invention discloses a crystal of 4-(tert-butoxyamino)-6-(6-(trifluoromethyl)pyridin-2-yl)-N-(2-(trifluoromethyl)pyridin-4-yl)-1,3,5-triazin-2-amine compound, a mesylate salt and crystal thereof, a preparation method thereof, a composition containing thereof, and a use thereof for inhibiting activity of mutant IDH2 and treating cancer.
    Type: Application
    Filed: April 27, 2021
    Publication date: August 12, 2021
    Inventors: Ticong Huang, Huifeng Xiao, Rui Zhao, Fei Liu, Wei Wei, Hongjiang Xu, Xiaojin Wang, Jingli Wu
  • Patent number: 11088260
    Abstract: A field effect transistor includes an exposed channel region disposed between a source region and a drain region. A gate electrode is disposed over the exposed channel region. An electrolyte gel is disposed between the gate electrode and the exposed channel region, wherein ions are immobilized in the electrolyte gel below a transition temperature and mobilized above the transition temperature to increase device resistance.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: August 10, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Qing Cao, Kangguo Cheng, Zhengwen Li, Fei Liu
  • Patent number: 11073511
    Abstract: A device (“the ExoTIC device”) for the isolation of extracellular vesicles from an extracellular vesicle-containing sample in which the sample is flowed through a membrane in a flow chamber to capture and purify the extracellular vesicles on the membrane. The extracellular vesicles may be washed and collected and utilized in any one of a number of ways including, but not limited to, identifying biomarkers of a disease, identifying the presence of a biomarker in a patient to determine whether a patient has a disease, and therapeutically treating existing diseases by re-introducing the extracellular vesicles, potentially modified, back into a body.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: July 27, 2021
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Fei Liu, Utkan Demirci, Sanjiv Sam Gambhir, Viswam S. Nair
  • Patent number: 11075265
    Abstract: After forming a laterally contacting pair of a semiconductor fin and a conductive strap structure overlying a deep trench capacitor embedded in a substrate and forming a gate stack straddling a body region of the semiconductor fin, source/drain regions are formed in portions the semiconductor fin located on opposite sides of the gate stack by ion implantation. Next, a metal layer is applied over the source/drain region and subsequent annealing consumes entire source/drain regions to provide fully alloyed source/drain regions. A post alloyzation ion implantation is then performed to introduce dopants into the fully alloyed source/drain regions followed by an anneal to segregate the implanted dopants at interfaces between the fully alloyed source/drain regions and the body region of the semiconductor fin.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: July 27, 2021
    Assignee: International Business Machines Corporation
    Inventors: Michael A. Guillorn, Fei Liu, Zhen Zhang
  • Publication number: 20210215479
    Abstract: The invention relates to a method and device for predicting a volume median diameter (VIVID) in an overlapped spray area of twin nozzles. Placing a single nozzle at different heights to determine a spray area; measuring all VMDs in the spray area to obtain first true measured values; dividing the first true measured values to construct a first calibration set and a first prediction set; establishing a polynomial fitting formula by a REGRESS function; placing twin nozzles at different heights and different nozzle spacing, and measuring VMDs in the overlapped spray area to obtain second true measured values; determining simulated values of the VMDs of first and second nozzles; dividing the simulated values of the VMDs and the second true measured values to construct a second calibration set and a second prediction set; quantitatively calibrating by using a radial basis function neural network (RBFNN) to obtain a prediction model; determining a VIVID in the overlapped spray area of twin nozzles.
    Type: Application
    Filed: July 17, 2020
    Publication date: July 15, 2021
    Inventors: Fei Liu, Wenwen Kong, Yufei Liu, Lei Feng, Hui Fang, Han Guo, Jun Zhou, Jiangang Shen
  • Patent number: 11063520
    Abstract: A converter includes input voltage terminals, a series circuit connected to the input voltage terminals and including first and second switches connected in series, a transformer including a primary winding and a secondary winding, a resonant tank connected to the series circuit and including the primary winding, an auxiliary switch connected to the series circuit and the resonant tank, output voltage terminals connected to the secondary winding, and a controller that, based on a single control loop and a single control parameter, controls the auxiliary switch with pulse-width modulation and controls the first and second switches with pulse-frequency modulation.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: July 13, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Yang Chen, Hongliang Wang, Yan-Fei Liu, Jahangir Afsharian, Bing Gong
  • Publication number: 20210210639
    Abstract: A metal-oxide-semiconductor field-effect transistor (MOSFET) device is provided. The device comprising: a substrate; an oxide layer on the substrate; a gate on the oxide layer; a source and a drain on the substrate, wherein the source and the drain are doped with a dopant of a first type; and a cold source coupled to the source, wherein the cold source comprises a junction between a semiconductor doped with a dopant of a second type, and a material selected from the group consisting of metal and semimetal.
    Type: Application
    Filed: June 6, 2019
    Publication date: July 8, 2021
    Inventors: Fei Liu, Jian Wang, Hong Guo
  • Publication number: 20210187603
    Abstract: A casting device of a large non-ferrous metal thin-walled structural component. A liquid outlet of the casting device is communicated with a casting sand box. The casting device comprises an L-shaped liquid storage cylinder, a pressure supplying cylinder, and a crystallization treater. Protective gas with the first gas pressure can be inflated into the top of the L-shaped liquid storage cylinder. The pressure supplying cylinder and the L-shaped liquid storage cylinder are integrally connected to form a U-shaped tube connector. Protective gas with the second gas pressure can be inflated into the top of the pressure supplying cylinder. A liquid inlet of the crystallization treater is communicated with the pressure supplying cylinder while a liquid outlet is communicated with the pouring system and the mold cavity. The crystallization treater is provided with a grain refining mechanism.
    Type: Application
    Filed: November 11, 2020
    Publication date: June 24, 2021
    Inventors: Pucun Bai, Xiaoming Cui, Fei Liu, Xiaohu Hou, Fukui Liu, Wenshu Zhao
  • Patent number: 11043899
    Abstract: A multi-stage, multi-level DC-DC step-down converter includes a first stage and a second stage having two identical cells connected in parallel. The first stage includes an input capacitor, four switches, and one flying capacitor. The two cells of the second stage each include four switches and one flying capacitor, and an output filter. The cells of the second stage are driven at half the switching frequency of the input stage, and provides a step-down ratio of 4:1. A third stage having four cells may be added to achieve a step-down ratio of 8:1, a fourth stage having eight cells may be added to achieve a step-down ration of 16:1, etc., each additional stage including a doubling of the number of cells connected in parallel, with all cells being substantially identical, and each stage operating at a further reduced fraction of the switching frequency. Embodiments are particularly suitable for applications such as a 48V intermediate bus architecture for servers and datacenters.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: June 22, 2021
    Inventors: Samuel Dylan Webb, Yan-Fei Liu
  • Patent number: 11021464
    Abstract: The invention discloses a crystal of 4-(tert-butoxyamino)-6-(6-(trifluoromethyl)pyridin-2-yl)-N-(2-(trifluoromethyl)pyridin-4-yl)-1,3,5-triazin-2-amine compound, a mesylate salt and crystal thereof, a preparation method thereof, a composition containing thereof, and a use thereof for inhibiting activity of mutant IDH2 and treating cancer.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: June 1, 2021
    Assignees: Chia Tai Tianqing Pharmaceutical Group Co., Ltd., Lianyungang Runzhong Pharmaceutical Co., Ltd, Centaurus Biopharma Co., Ltd
    Inventors: Ticong Huang, Huifeng Xiao, Rui Zhao, Fei Liu, Wei Wei, Hongjiang Xu, Xiaojin Wang, Jingli Wu
  • Patent number: 11016932
    Abstract: Systems and methods for providing key-value based filesystem operations are disclosed. In one embodiment, the method comprises receiving at least one file operation from an application, the file operation including a file path and a requested operation; generating a key-value operation based on the file operation, the key-value operation including a key including the file path; executing the key-value operation at a key-value storage engine; receiving, from the key-value storage engine, a result of the key-value operation; generating a result value based on the result of the key-value operation; and returning the result value to the application.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: May 25, 2021
    Assignee: ALIBABA GROUP HOLDING LIMITED
    Inventors: Sheng Qiu, Fei Liu, Shu Li
  • Publication number: 20210123853
    Abstract: The disclosure discloses an apparatus and a method for microbial cell counting, and belongs to the field of cell counting. In the present application, by converting a traditional automated intermittent counting process into a continuous counting process, the cell sap fixed in a blood cell plate in a traditional counter becomes the cell sap flowing in a microchannel, so as to prolong the cell detection time and distance. The size of the microchannel is slightly greater than the diameter of microbial cells, so as to ensure that the cells flow through the cross section of the microchannel one by one. At the same time, since the diameter of the counterbores communicated by the microchannel is slightly greater than the width of the microchannel, the flow rate of the cell sap slows down when the cell sap flows to the counterbores.
    Type: Application
    Filed: December 31, 2020
    Publication date: April 29, 2021
    Inventors: Gongxin LI, Fei LIU, Xiaoli LUAN, Zhiguo WANG, Jun CHEN
  • Publication number: 20210117983
    Abstract: A method for anti-counterfeit inspection of a QR code of an agricultural product based on a watermark library. The method includes step 1. establishing a watermark-containing QR code library; step 2. tracing a QR code watermark image; and step 3. verifying the QR code watermark image. Watermark-containing QR codes are generated by a QR code generation module and a watermark library, and the watermark-containing QR codes are constructed as the watermark-containing QR code library. The watermark-containing QR code library is used to verify the QR code watermark image, and the QR code watermark image is obtained by tracing the watermark-containing QR codes. In the method for anti-counterfeit inspection of a QR code of an agricultural product based on a watermark library, an image watermark library is designed, so that the embedding of a watermark is no longer single.
    Type: Application
    Filed: June 16, 2020
    Publication date: April 22, 2021
    Inventors: Fei Liu, Hao Li, Wenhao Ding, Qi Wu, Mengting Zeng, Yiqiong Chen, Youhua Zhang, Yunzhi Wu
  • Patent number: 10986683
    Abstract: Provided are a data communication method and system, an electronic device, a chip and a storage medium. The data communication method includes: establishing a wireless communication connection with a preset first receiving terminal, and notifying the connection information to a second receiving terminal. The connection information includes information of a communication channel for performing wireless communication between the transmitting terminal and the first receiving terminal. The connection information is used to instruct the second receiving terminal to monitor communication data in the communication channel. When the second receiving terminal knows after monitoring the communication data, data required to be transmitted to the first receiving terminal is transmitted to the communication channel.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: April 20, 2021
    Inventors: Fei Liu, Dekun Chen, Guochao Yin, Jun Zhou, Long Xie, Fahai Chen, Qingbin Li
  • Patent number: 10985630
    Abstract: A cooling fan module includes a fan and a PMDC motor. The PMDC motor includes a stator and a rotor. The stator has 2P magnetic poles. The rotor includes a rotary shaft, a rotary core, a commutator, and a winding. The rotor core includes m×P pole teeth. The commutator includes k×m×P commutator segments. Adjacent pole teeth define therebetween winding slots for receiving the winding. The winding includes winding units each having P coils. Each of two ends of each winding unit includes a lead-out line connected to the commutator segment. Any two lead-out lines extending out of different winding slots are spaced from each other at locations outside the commutator segments.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: April 20, 2021
    Assignee: Johnson Electric International AG
    Inventors: Rui Feng Qin, Fei Liu
  • Publication number: 20210107064
    Abstract: A efficient large-scale selective laser melting forming device comprises a rack (1), a forming workbench (2) arranged on the rack, a forming bin (3) sleeved on the forming workbench and a galvanometer scanning device (7) arranged outside the forming bin and moving reciprocally along the powder spreading direction to form a multi-station working state, and a smoke blowing and sucking mechanism (8) arranged in the forming bin in a mode of synchronously moving to the same station with the galvanometer scanning device. The galvanometer scanning device can move reciprocally along the powder spreading direction to form a multi-station working state. The galvanometer scanning device is entirely arranged outside the forming bin. The smoke blowing and sucking mechanism arranged in the forming bin can synchronously move with the galvanometer scanning device to the same station.
    Type: Application
    Filed: October 27, 2017
    Publication date: April 15, 2021
    Inventors: Zhengwen ZHANG, Peng ZHANG, Fei LIU, Jingwei DAI, Zhibo MA, Zhonghua LI, Donghua WEI, Tao ZHANG, Zhihao REN