Patents by Inventor Qingfeng Li

Qingfeng 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: 20210086257
    Abstract: A semi-continuous casting equipment for thin-walled alloy castings with equal outer diameter, optimized by synergistic action of traveling magnetic fields and ultrasonic wave, includes: a melting and insulation device, a heat insulation panel, a traveling magnetic field generator and a water-cooled crystallizer sequentially positioned on a working platform; an outer mold positioned on the water-cooled crystallizer and sleeved the traveling magnetic field generator; a mold core inside the outer mold defining a casting cavity; a bottom plate below the mold core capable of sliding against and along an inner side of the outer mold; two position control units supported by the working platform; an ultrasonic limit baffle moveably engaged with the position control units; an ultrasonic wave generator affixed on the ultrasonic limit baffle and extended to the casting cavity; a motion system controlling up and down movement of the bottom plate and the position control units through a gear transmission mechanism.
    Type: Application
    Filed: September 20, 2020
    Publication date: March 25, 2021
    Inventors: Yanqing SU, Lei LUO, Liangshun LUO, Liang WANG, Ruirun CHEN, Jingjie GUO, Jingsong HOU, Qingfeng YUAN, Chunhui LI
  • Publication number: 20200407561
    Abstract: The invention relates to a wood-based biomimetic artificial muscle and preparation method and application thereof. The biomimetic artificial muscle comprises a wood-based cellulose skeleton, and polyvinyl alcohol and at least one ionic polymer filled in the wood-based cellulose skeleton. The preparation method includes S1: slicing wood, and subjecting the obtained wood slices to ammonia treatment and delignification in sequence; S2: soaking in the solution of citric acid and/or citrate; S3: preparing water solution of an ionic polymer and DMSO water solution of polyvinyl alcohol separately, and mixing to obtain polymer solution; S4: subjecting the treated wood slices to vacuum treatment, filling the polymer solution into the container, releasing vacuum, and pressurizing to infiltrate the polymer into the wood slices until saturation; S5: freezing the wood slices in a refrigerator and thawing; and S6: repeating S5 for 5-10 times, washing the wood slices, and drying.
    Type: Application
    Filed: April 20, 2020
    Publication date: December 31, 2020
    Inventors: Qingfeng Sun, Baokang Dang, Chao Wang, Zhe Wang, Caicai Li
  • Publication number: 20200402055
    Abstract: Providing data processing methods is disclosed, including: receiving a request to provide a plurality of data processing methods to a user; obtaining historical data associated with a plurality of historical user selections associated with the plurality of data processing methods, wherein the plurality of historical user selections is associated with the user; determining a plurality of data processing fingerprint aggregate scores corresponding to respective ones of the plurality of data processing methods based at least in part on the historical data; and providing the plurality of data processing methods based at least in part on the plurality of data processing fingerprint aggregate scores.
    Type: Application
    Filed: July 1, 2020
    Publication date: December 24, 2020
    Inventor: Qingfeng Li
  • Publication number: 20200392507
    Abstract: The current invention provides a method of activating fibroblast and myofibroblast apoptosis in a tissue of a mammal, comprising administering to the tissue a therapeutically effective amount of a composition comprising an siRNA molecule that binds to an mRNA that codes for TGFB1 protein in a mammalian cell, an siRNA molecule that binds to an mRNA that codes for COX-2 protein in a mammalian cell, and a pharmaceutically acceptable carrier comprising a pharmaceutically acceptable histidine-lysine polymer. The invention also provides additional methods for using this composition.
    Type: Application
    Filed: October 30, 2017
    Publication date: December 17, 2020
    Applicant: Sirnaomics, Inc.
    Inventors: John Xu, Patrick Y. Lu, Jia Zhou, Qingfeng Li, Vera Simonenko
  • Publication number: 20200378257
    Abstract: The disclosure provides a liquid taking device and a liquid taking method. The liquid taking device comprises a liquid taking bottle, a heavy ball and liquid taking ropes. The liquid taking bottle has a first mouth and a bottom opposite to the first mouth. The heavy ball is arranged in the liquid taking bottle. The liquid taking device can be controlled to reach different depths under the ground by the action of two liquid ropes. When the first mouth of the bottle is placed facing downward, the heavy ball blocks the first mouth of the bottle under its own gravity to prevent liquid leakage; when the first mouth of the bottle is turned upwards under the action of the liquid taking rope, the heavy ball falls onto the bottom of the bottle, such that an external liquid can flow into the liquid taking device, which has a good practical utility.
    Type: Application
    Filed: March 6, 2020
    Publication date: December 3, 2020
    Inventors: Hongling MA, Yuhao ZHANG, Xilin SHI, Chunhe YANG, Yinping LI, Hongwu YIN, Shuanglong DING, Qingfeng LU, Kai LIU
  • Publication number: 20200336074
    Abstract: A switch mode power supply includes a flyback power converter and a control circuit. The flyback power converter includes an input, an output, a transformer coupled between the input and the output, a power switch coupled between the input and the transformer, and a clamp circuit coupled between the input and the transformer. The clamp circuit includes a capacitor and a clamp switch coupled in series with the capacitor. The control circuit is configured to control the power switch and the clamp switch. The switch mode power supply further includes at least one additional capacitor coupled in parallel with the capacitor of the clamp circuit to facilitate selection of a combination of capacitors to adjust a resonant frequency of the clamp switch for optimizing efficiency of the power supply. Other examples switch mode power supplies and/or methods for adjusting a resonant frequency of flyback power converters are also disclosed.
    Type: Application
    Filed: July 6, 2020
    Publication date: October 22, 2020
    Inventors: Chunyu DING, Jun LIU, Qingfeng LIU, Zhe LI
  • Patent number: 10748152
    Abstract: Providing data processing methods is disclosed, including: receiving a request to provide a plurality of data processing methods to a user; obtaining historical data associated with a plurality of historical user selections associated with the plurality of data processing methods, wherein the plurality of historical user selections is associated with the user; determining a plurality of data processing fingerprint aggregate scores corresponding to respective ones of the plurality of data processing methods based at least in part on the historical data; and providing the plurality of data processing methods based at least in part on the plurality of data processing fingerprint aggregate scores.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: August 18, 2020
    Assignee: Alibaba Group Holding Limited
    Inventor: Qingfeng Li
  • Patent number: 10683459
    Abstract: Provided are a liquid-phase hydroisomerization system and a process therefor and use thereof. The system comprises a gas-liquid mixer (3), a hydroisomerization reactor (4) and a fractionating column (6). An oil product and hydrogen are mixed as a liquid hydrogen-oil mixture, and are introduced into the hydroisomerization reactor for a hydroisomerization reaction, and after being fractionated, a target product is led out. A supplemental hydrogen-dissolving inner member is provided at least between a group of two adjacent catalyst bed layers in order to supplement hydrogen to the reactants. The process cancels a circulating hydrogen compressor, has a simple process flow, and can be applied to the production of a lubricant base oil by the hydroisomerization of a lubricant raw material or the production of a low freezing point diesel by the hydroisomerization of and the reduction in the freezing point of a diesel raw material.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: June 16, 2020
    Assignee: PetroChina Company Limited
    Inventors: Shoutao Ma, Xiaoqiao Huang, Famin Sun, Qingfeng Ma, Fangming Xie, Yongsheng Duan, Xianjun Wu, Fengxuan Li, Dongmei Ge, Endong Xia, Ruifeng Li, Ronglei Ji, Liying Liu, Lihong Qin, Xiangbin Meng, Chunming Dong, Xuefeng Lu, Rui Wang, Tiegang Xu, Shurong Ni
  • Patent number: 10643469
    Abstract: The present invention provides a traffic intersection driving assistance method and system, wherein the method comprises: acquiring driving information about vehicles within a current intersection area by way of vehicle interconnection; obtaining vehicle flows in various driving directions according to the driving information; determining whether a difference in between vehicle flows in various driving directions exceeds a pre-set threshold, and if so, changing a driving direction of a variable lane; and sending information about the distribution of driving directions of current lanes to the vehicles within the current intersection area. The object of the present invention is to avoid traffic congestion by adjusting a variable lane in time.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: May 5, 2020
    Assignees: ZHEJIANG GEELY AUTOMOBILE RESEARCH INSTITUTE CO., LTD, ZHEJIANG GEELY HOLDING GROUP CO., LTD.
    Inventors: Xuefeng Li, Ke Huo, Bo Li, Dayong Zhou, Weiguo Liu, Chengming Wu, Qingfeng Feng
  • Publication number: 20200098108
    Abstract: A method for assessing a condition of an organ or tissue of a target object is provided. The method may include: obtaining a target image of the target object; segmenting a target region from the target image, the target region of the target image corresponding to a sub-region of the organ or tissue; determining a morphological characteristic value of the target region in the target image; obtaining a reference standard associated with a sample organ or tissue of a plurality of sample objects, the sample organ or tissue being of a same type as the organ or tissue of the target object; and assessing the condition of the organ or tissue of the target object by comparing the morphological characteristic value of the target region in the target image with the reference standard.
    Type: Application
    Filed: September 19, 2019
    Publication date: March 26, 2020
    Applicant: SHANGHAI UNITED IMAGING INTELLIGENCE CO., LTD.
    Inventors: Quan HUO, Feng SHI, Qingfeng LI, Bokai LI, Yiqiang ZHAN
  • Publication number: 20190329757
    Abstract: The present disclosure provides a method and a device for controlling a motion of a vehicle, and a vehicle. A power system of the vehicle includes an engine, a first motor and a second motor, the method includes: receiving a cruise speed, a speed fluctuation quantity and a preset traveling mileage of the vehicle, and obtaining an upper speed bound and a lower speed bound of the vehicle based on the cruise speed and the speed fluctuation quantity; adjusting a current speed of the vehicle to the lower speed bound, and controlling the vehicle to enter a first cruise phase of a two-phase cruise mode; and controlling the vehicle to enter a second cruise phase of the two-phase cruise mode when the current speed of the vehicle is greater than or equal to the upper speed bound and a current traveling mileage is less than the preset traveling mileage.
    Type: Application
    Filed: July 11, 2019
    Publication date: October 31, 2019
    Inventors: Shengbo LI, Bo CHENG, Keqiang LI, Hongbo GAO, Qingfeng LIN, Xuedong LIU, Zhitao WANG, Ziyu LIN, Jianqiang WANG, Yugong LUO, Diange YANG
  • Patent number: 10355601
    Abstract: According to some aspects of the present disclosure, switched-mode power converters and control methods are disclosed. Example power converters include an input terminal, an output terminal, and a transformer coupled between the input terminal and the output terminal. The transformer includes a primary winding and a secondary winding. The power supply also includes at least one switch coupled to the primary winding, and a primary controller coupled to the at least one switch to control switching operation of the at least one switch. The primary controller includes a voltage reference. The power supply further includes a secondary controller configured to detect a no load condition at the output terminal, and operate the primary controller in a burst mode by adjusting the voltage reference of the primary controller when the secondary controller detects the no load condition at the output terminal.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: July 16, 2019
    Assignee: Astec International Limited
    Inventors: Jun Liu, QingFeng Liu, Xun Gong, Zhe Li
  • Patent number: 10340787
    Abstract: A power factor correction (PFC) stage of a power supply unit has a PFC circuit including a rectifier circuit, a PFC controller circuit with a PFC switch, a current sensor connected to the PFC switch, a high frequency bypass capacitor connected between the PFC controller circuit and the rectifier circuit, and a bulk storage capacitor connected between the PFC controller circuit and an output of the PFC stage. The PFC stage also has a negative temperature coefficient thermistor connected in series with the PFC switch and the current sensor. During a start-up of the power supply unit, the PFC controller circuit causes the PFC switch to turn-on until the PFC controller circuit causes the PFC switch to turn-off after a current through the current sensor is sensed as being equal to or greater than a preset value.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: July 2, 2019
    Assignee: Astec International Limited
    Inventors: Jun Liu, Qingfeng Liu, Zhaotu Fan, Zhe Li
  • Patent number: 9883917
    Abstract: Disclosed is a skin dilator, comprising an expander (11), a pipe network provided on the skin-side surface wall (111) of the expander (11) composed of longitudinal tube (22) and horizontal tube (21) having a reticular structure and communicating with each other, and a guide tube (24) communicating with the pipe network. The skin dilator further comprises several burrs (25) distributed on the skin-side surface wall (111) of the expander (11), and several small apertures (23) communicating the inner cavity of the tube with the outside are provided on both of the longitudinal tube (22) and horizontal tube(21). The tissue expander can be infused biological agents by the filling port to the skin expanding site through the small apertures (23), which may accelerate the expansion growth of skin, prevent skin complications, such as necrosis.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: February 6, 2018
    Assignee: SHANGHAI NINTH PEOPLE'S HOSPITAL AFFILIATED, SHANGHAI JIAOTONG, UNIVERSITY SCHOOL OF MEDICINE
    Inventors: Yaokai Gan, Kerong Dai, Qingfeng Li
  • Patent number: D864367
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: October 22, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Xusheng Chen, Sha Li, Nanfei Chen, Jijian Zhang, Jianfeng Lin, Min Zhang, Qingfeng Zhang, Jiabao Feng, Wenbo Lu, Yao Li, Huijie Wang, Siling Xu, Guangyu Chen
  • Patent number: D864368
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: October 22, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Xusheng Chen, Sha Li, Nanfei Chen, Jijian Zhang, Jianfeng Lin, Min Zhang, Qingfeng Zhang, Jiabao Feng, Wenbo Lu, Yao Li, Huijie Wang, Siling Xu, Guangyu Chen
  • Patent number: D870873
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: December 24, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Xusheng Chen, Sha Li, Nanfei Chen, Jijian Zhang, Jianfeng Lin, Min Zhang, Qingfeng Zhang, Jiabao Feng, Wenbo Lu, Yao Li, Huijie Wang, Siling Xu, Guangyu Chen
  • Patent number: D888913
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: June 30, 2020
    Inventors: Wenbing Ling, Chunqing Hu, Xue Zhang, Chunyue Xu, Jingjing Wang, Luan Qin, Huanlong Wu, Xuxiang He, Sha Li, Jijian Zhang, Nanfei Chen, Jinmei Feng, Qinhong Chen, Binglei Niu, Yang Guo, Weirui Liu, Linjun Yu, Zhaigu Fu, Zhaoyang Wu, Jiaying Tan, Junyi Zhou, Huihui Wang, Jianming Guan, Jianfeng Lin, Qingfeng Zhang, Xusheng Chen, Min Zhang, Ningning Han, Jiahua Liu, Kangquan Xu, Qingqing Cai
  • Patent number: D891309
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: July 28, 2020
    Inventor: Qingfeng Li
  • Patent number: D907184
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: January 5, 2021
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Xusheng Chen, Sha Li, Nanfei Chen, Jijian Zhang, Jianfeng Lin, Min Zhang, Qingfeng Zhang, Jiabao Feng, Wenbo Lu, Yao Li, Huijie Wang, Siling Xu, Guangyu Chen