Patents by Inventor Zhendong Liu

Zhendong 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: 20250248876
    Abstract: Some embodiments described herein are directed to a trunk supporting exoskeleton for reducing muscle forces in a wearer's back during forward lumbar flexion. The trunk supporting exoskeleton can include a supporting trunk frame, a first thigh link, a second thigh link, an actuator, a shaft pulley, a housing pulley, a shaft line, and a housing line. The actuator can include an actuator housing and an actuator shaft. When the wearer is bent forward relative to a vertical gravitational line in a sagittal plane, the actuator can generate an actuator resistive torque between the actuator housing and the actuator shaft. The actuator resistive torque between the actuator housing and the actuator shaft can generate tensile forces in the housing line and the shaft line, thereby generating extension torques between the respective first and second thigh links and the supporting trunk frame.
    Type: Application
    Filed: April 11, 2023
    Publication date: August 7, 2025
    Applicants: The Regents of the University of California, suitX, Inc.
    Inventors: Wayne TUNG, Homayoon KAZEROONI, Jing-Song HUANG, YI ZENG, Zhendong LIU
  • Publication number: 20250228729
    Abstract: An actuator for an exoskeleton can include a motor and a spring. The motor can include a housing and shaft. A first end of the spring can be coupled to one of the shaft or housing. A second end of the spring can be free when the shaft is in a first range of rotation of the shaft relative to the housing. The second end of the spring can be constrained by the other one of the shaft or housing when the shaft is in a second range of rotation of the shaft relative to the housing. When the shaft is in the first range of rotation, the motor can provide a motor resistive torque between the shaft and the housing, and when the shaft is in the second range of rotation, the spring can provide a spring resistive torque between the shaft and the housing.
    Type: Application
    Filed: April 11, 2023
    Publication date: July 17, 2025
    Applicants: The Regents of the University of California, suitX, Inc.
    Inventors: Wayne TUNG, Homayoon KAZEROONI, Jing-Song HUANG, Yi ZENG, Zhendong LIU
  • Patent number: 12291668
    Abstract: Disclosed is a coated rubber particle, preparation thereof and its application as a plugging material in drilling fluids. The coated rubber particle comprises a rubber core and a coating layer, wherein the core has a fluorine content (at %) of 0-15%, the coating layer has a fluorine content (at %) of 30-80%, and the coated rubber particle has a 24-hour oil absorption rate of 4% or less. The coated rubber particle has good oil resistance, and is particularly suitable for use as a plugging material in drilling fluids, particularly oil-based drilling fluids.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: May 6, 2025
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SINOPEC OILFIELD SERVICE CORPORATION, SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD, DRILLING TECHNOLOGY RESEARCH INSTITUTE OF SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD
    Inventors: Gongrang Li, Wenbo Li, Bingxiang Sun, Hui Tian, Xizhou Wang, Ke Li, Jianghong Jia, Lei Yu, Jie Sun, Xudong Wang, Chengjun Wang, Bingtai Li, Haibin Li, Zhendong Liu, Kai Gao, Chunguang Li, Hui Li
  • Patent number: 12281066
    Abstract: The present disclosure relates to a device and process for preparing sebacic acid through electromagnetic induction heating coupled with dry constant-temperature alkaline hydrolysis. The device includes an electromagnetic heating cylinder and a reaction kettle arranged in the electromagnetic heating cylinder, heat storage pellets fill space between the reaction kettle and the electromagnetic heating cylinder, and the heat storage pellets adhere to an inner wall of the electromagnetic heating cylinder and an outer wall of the reaction kettle. The upper end of the reaction kettle is provided with a feeding port, a gas outlet and a temperature measuring port, the reaction kettle is also provided with a stirring device, a lower portion of the reaction kettle is provided with a discharging port, and the feeding port, the gas outlet, the temperature measuring port and the discharging port all extend out of the thermal insulation cotton.
    Type: Grant
    Filed: September 25, 2024
    Date of Patent: April 22, 2025
    Assignee: ZHEJIANG UNIVERSITY OF TECHNOLOGY
    Inventors: Yong Nie, Shangzhi Yu, Qianhui Weng, Hua Zhang, Zhendong Liu
  • Publication number: 20250073891
    Abstract: A trunk-supporting exoskeleton for reducing muscle forces in a wearer's back during forward lumbar flexion comprises a supporting trunk, a first thigh link, a second thigh link, and an actuator, which includes an actuator first element and an actuator second element. When the wearer is in a forward-bent position, the actuator generates a first torque on the actuator first element and a second actuator torque on the actuator second element to generate extension torques between the first and second thigh links and the supporting trunk, thereby resisting bending motion of the supporting trunk in the forward-bent position. When the wearer is not in the forward-bent position, the actuator generates a substantially small first torque and second torque, resulting in small resistance to the movement of the thigh links relative to the supporting trunk during walking.
    Type: Application
    Filed: October 11, 2024
    Publication date: March 6, 2025
    Applicants: The Regents of the University of California, suitX, Inc.
    Inventors: Wayne TUNG, Homayoon KAZEROONI, Jing-Song HUANG, Yi ZENG, Zhendong LIU
  • Publication number: 20240217033
    Abstract: An ultra-long steel strip grating manufacturing system using femtosecond laser with spatiotemporal parameters cooperative control, the manufacturing system comprising an unwinding roller, a traction roller and a winding roller, a linear femtosecond laser unit and an electronic shutter being disposed between the unwinding roller and the traction roller and directly above the electronic shutter, a cleaning unit being disposed between the traction roller and the winding roller, a first inspection unit being disposed between the cleaning unit and the winding roller, a second inspection unit being disposed directly above the winding roller, and a plurality of auxiliary roller systems which are driven rollers being disposed along a conveying direction of the steel strip, which achieves a horizontal movement of the steel strip under the electronic shutter, and also achieves a smooth entry of the steel strip into the cleaning unit for cleaning.
    Type: Application
    Filed: April 21, 2023
    Publication date: July 4, 2024
    Inventors: Guoyong Ye, Zhendong Liu, Shaobo Jin, Haifeng Xiao, Xiaoyu Wen, Xuling Liu, Yalin Zhang
  • Publication number: 20230386605
    Abstract: The present discloses a predicting method of transcription factor binding sites based on weighted multi-granularity scanning, which belongs to the field of site prediction. The method comprises: using an inverse sequence, a complementary sequence and a complementary inverse sequence to augment an initial data set; carrying out feature representation on the DNA sequence by combining one-hot coding and multi-base feature coding; dividing a training set and a test set; calculating weight vectors of the features; carrying out weighted multi-granularity scanning; performing model training through a cascade forest to obtain a classification prediction model of transcription factor binding sites; inputting the test set into the classification prediction model to obtain a classification prediction result; and constructing an evaluation index to evaluate the performance of the method.
    Type: Application
    Filed: April 23, 2023
    Publication date: November 30, 2023
    Applicant: Shanghai Institute of Technology
    Inventors: Zhendong Liu, Xiangdong Mao, Yunxiang Liu, Dongyan Li, Yu Zhang, Tao Lin
  • Publication number: 20230307093
    Abstract: The present invention provides a method for preparing a transparent free-standing titanium dioxide nanotube array film. In the method, with the titanium foil as a substrate, the titanium dioxide nanotube array film is obtained by anode oxidation on the surface of the titanium foil. Upon high temperature annealing, the titanium dioxide nanotube array film naturally falls off to obtain the transparent free-standing titanium dioxide nanotube array film. The method according to the present invention features simple operations, saves time and cost. With the method, a completely strippable titanium dioxide nanotube array film may be prepared, and in addition, morphology of the titanium dioxide nanotube is not damaged. The free-standing and complete titanium dioxide nanotube array film facilitates transfer and post-treatment, has the feature of transparency and may be in favor of the applications to the studies such as photocatalysis and the like.
    Type: Application
    Filed: January 9, 2023
    Publication date: September 28, 2023
    Applicant: Shanghai Institute of Technology
    Inventors: Zhendong Liu, Yunxiang Liu, Xi Chen, Ying Chen
  • Publication number: 20230242804
    Abstract: Disclosed is a coated rubber particle, preparation thereof and its application as a plugging material in drilling fluids. The coated rubber particle comprises a rubber core and a coating layer, wherein the core has a fluorine content (at %) of 0-15%, the coating layer has a fluorine content (at %) of 30-80%, and the coated rubber particle has a 24-hour oil absorption rate of 4% or less. The coated rubber particle has good oil resistance, and is particularly suitable for use as a plugging material in drilling fluids, particularly oil-based drilling fluids.
    Type: Application
    Filed: February 4, 2021
    Publication date: August 3, 2023
    Inventors: Gongrang LI, Wenbo LI, Bingxiang SUN, Hui TIAN, Xizhou WANG, Ke LI, Jianghong JIA, Lei YU, Jie SUN, Xudong WANG, Chengjun WANG, Bingtai LI, Haibin LI, Zhendong LIU, Kai GAO, Chunguang LI, Hui LI
  • Publication number: 20230223099
    Abstract: A predicting method of cell deconvolution based on a convolutional neural network is provided. The convolutional neural network technology is used to speculate the cell type composition proportion of a tissue from single-cell RNA sequencing data. Compared with a traditional cell deconvolution algorithm, the predicting method of cell deconvolution based on a convolutional neural network overcomes the defects that the traditional cell deconvolution algorithm needs to carry out complex data preprocessing and needs to design a mathematical algorithm to standardize the single-cell sequencing data. According to the convolutional neural network designed by the present disclosure, hidden features can be extracted from the single-cell RNA sequencing data, network nodes have very high robustness to noise and errors of the data, and internal relations among various genes are fully mined, so that the cell deconvolution performance is improved.
    Type: Application
    Filed: January 5, 2023
    Publication date: July 13, 2023
    Applicant: Shanghai Institute of Technology
    Inventors: Zhendong Liu, Xinrong Lv, Yunxiang Liu, Ying Chen
  • Publication number: 20230091539
    Abstract: Embodiments of this application provide an information processing method, a device, a system, a storage medium, and a computer program product, and relate to a web conferencing technology. In the method, when a plurality of users join a web conference by using a plurality of participating terminal devices, at least two users may use their own participating terminal devices. In addition, screen sharing is performed by using a web conferencing system. Therefore, the plurality of participating terminal devices in the conference may display, on screens of the plurality of participating terminal devices, information shared by the at least two sharing terminal devices. In this manner, the web conferencing system supports screen sharing performed by a plurality of sharing terminal devices at a same moment, and each sharing terminal device can control the screen sharing. This facilitates information sharing between the pluralities of users, and improves communication efficiency between the users.
    Type: Application
    Filed: November 29, 2022
    Publication date: March 23, 2023
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Huicai LAN, Hua YIN, Shuiping QIU, Yong SHI, Sining WEI, Zhendong LIU, Hao CHEN
  • Publication number: 20210387422
    Abstract: The present disclosure relates generally to a support material for three-dimensional printing comprising a blend of at least two cellulose ethers or a blend of at least one cellulose ether and at least one vinyl pyrrolidone polymer. Additionally, the present disclosure relates to a shaped material and a three-dimensionally printed object comprising the support material. Furthermore, a process for producing a three-dimensional object using the support material is also disclosed.
    Type: Application
    Filed: October 7, 2019
    Publication date: December 16, 2021
    Applicant: HERCULES LLC
    Inventor: Zhendong LIU
  • Publication number: 20200357616
    Abstract: Embodiments of the invention generally provide a processing chamber used to perform a physical vapor deposition (PVD) process and methods of depositing multi-compositional films. The processing chamber may include: an improved RF feed configuration to reduce any standing wave effects; an improved magnetron design to enhance RF plasma uniformity, deposited film composition and thickness uniformity; an improved substrate biasing configuration to improve process control; and an improved process kit design to improve RF field uniformity near the critical surfaces of the substrate. The method includes forming a plasma in a processing region of a chamber using an RF supply coupled to a multi-compositional target, translating a magnetron relative to the multi-compositional target, wherein the magnetron is positioned in a first position relative to a center point of the multi-compositional target while the magnetron is translating and the plasma is formed, and depositing a multi-compositional film on a substrate.
    Type: Application
    Filed: July 24, 2020
    Publication date: November 12, 2020
    Inventors: Adolph Miller ALLEN, Lara HAWRYLCHAK, Zhigang XIE, Muhammad M. RASHEED, Rongjun WANG, Xianmin TANG, Zhendong LIU, Tza-Jing GUNG, Srinivas GANDIKOTA, Mei CHANG, Michael S. COX, Donny YOUNG, Kirankumar SAVANDAIAH, Zhenbin GE
  • Patent number: 10763090
    Abstract: Embodiments of the invention generally provide a processing chamber used to perform a physical vapor deposition (PVD) process and methods of depositing multi-compositional films. The processing chamber may include: an improved RF feed configuration to reduce any standing wave effects; an improved magnetron design to enhance RF plasma uniformity, deposited film composition and thickness uniformity; an improved substrate biasing configuration to improve process control; and an improved process kit design to improve RF field uniformity near the critical surfaces of the substrate.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: September 1, 2020
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Adolph Miller Allen, Lara Hawrylchak, Zhigang Xie, Muhammad M. Rasheed, Rongjun Wang, Xianmin Tang, Zhendong Liu, Tza-Jing Gung, Srinivas Gandikota, Mei Chang, Michael S. Cox, Donny Young, Kirankumar Savandaiah, Zhenbin Ge
  • Patent number: 10718049
    Abstract: Apparatus for improved particle reduction are provided herein. In some embodiments, an apparatus may include a process kit shield comprising a one-piece metal body having an upper portion and a lower portion and having an opening disposed through the one-piece metal body, wherein the upper portion includes an opening-facing surface configured to be disposed about and spaced apart from a target of a physical vapor deposition chamber and wherein the opening-facing surface is configured to limit particle deposition on an upper surface of the upper portion of the one-piece metal body during sputtering of a target material from the target of the physical vapor deposition chamber.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: July 21, 2020
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Muhammad Rasheed, Rongjun Wang, Zhendong Liu, Xinyu Fu, Xianmin Tang
  • Patent number: 10308516
    Abstract: Provided is a method for continuous production of zeolite in which a starting material is continuously supplied to a tubular reactor to produce an aluminophosphate zeolite that contains, in the framework structure, at least aluminum atoms and phosphorus atoms or an aluminosilicate zeolite having 5?SiO2/Al2O3?2000. The tubular reactor is heated using a heat medium; a ratio (volume)/(lateral surface area) of the volume (inner capacity) to the lateral surface area of the tubular reactor is 0.75 cm or smaller; and seed crystals are added to the starting material. Through using a small-diameter tubular reactor and heating with a heat medium, it becomes possible to heat sufficiently the entirety of a starting material (zeolite precursor gel) in a short time, and to allow reaction to proceed at a high rate. The occurrence of irregular pressure fluctuations during continuous production of the zeolite can be prevented by adding seed crystals.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: June 4, 2019
    Assignees: MITSUBISHI CHEMICAL CORPORATION, THE UNIVERSITY OF TOKYO
    Inventors: Tatsuya Okubo, Toru Wakihara, Zhendong Liu, Takahiko Takewaki, Kazunori Oshima, Daisuke Nishioka
  • Patent number: 10060024
    Abstract: Target assemblies and PVD chambers including target assemblies are disclosed. The target assembly includes a target that has a concave shaped target. When used in a PVD chamber, the concave target provides more radially uniform deposition on a substrate disposed in the sputtering chamber.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: August 28, 2018
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Zhendong Liu, Rongjun Wang, Xianmin Tang, Srinivas Gandikota, Tza-Jing Gung, Muhammad M. Rasheed
  • Publication number: 20180087147
    Abstract: Apparatus for improved particle reduction are provided herein. In some embodiments, an apparatus may include a process kit shield comprising a one-piece metal body having an upper portion and a lower portion and having an opening disposed through the one-piece metal body, wherein the upper portion includes an opening-facing surface configured to be disposed about and spaced apart from a target of a physical vapor deposition chamber and wherein the opening-facing surface is configured to limit particle deposition on an upper surface of the upper portion of the one-piece metal body during sputtering of a target material from the target of the physical vapor deposition chamber.
    Type: Application
    Filed: December 4, 2017
    Publication date: March 29, 2018
    Inventors: MUHAMMAD RASHEED, RONGJUN WANG, ZHENDONG LIU, XINYU FU, XIANMIN TANG
  • Patent number: 9873535
    Abstract: The present invention concerns a composition and method of using non-molybdate corrosion inhibitors in sterilizing and pasteurizing applications. The composition is a blend of one or more components including corrosion inhibitors, surfactants, hydrotropes, polymer dispersants, pH adjusting agents and water. The composition may include two or more of a) alkyl-dicarboxylic acid; b) phosphono-carboxylic acid; c) tri(amino-carboxylic acid); d) anionic polymer dispersant; e) non-ionic surfactant; f) inorganic phosphate; g) phosphonotricarboxylic acid; and h) hydrotrope. Specifically, the composition may comprise sebacic acid, hydroxyphosphonoacetic acid, and 6,6?,6?-(1,3,5-triazine-2,4,6-triyltriimino)tris-hexanoic acid. Optionally, the composition can further comprise a co-polymer of acrylic acid and allyl-2-hydroxy-propyl-sulfonate ether (AA/AHPSE), 2-phosphono-1,2,4-butane-tricarboxylic acid, sodium phosphate monobasic or phosphoric acid, ?-decyl-?-hydroxy-poly(oxy-1,2ethanediyl), and sodium cumenesulfonate.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: January 23, 2018
    Assignee: Genral Electric Company
    Inventors: Zhendong Liu, Donald A. Meskers, Jr., Peter Scheidel
  • Patent number: D1037599
    Type: Grant
    Filed: February 2, 2024
    Date of Patent: July 30, 2024
    Inventor: Zhendong Liu