Patents by Inventor Xuan Zhang

Xuan Zhang 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).

  • Preparation of cationic surfactants
    Patent number: 11286232
    Abstract: Compositions that include cationic surfactants and methods of synthesizing compositions that include cationic surfactants. The surfactants include a quaternary amine and a saturated or unsaturated alkyl chain with 4 to 28 carbons. The surfactants can be generated by reacting a fatty acid modified with an amino alkyl group and an epihalohydrin in the presence of a base. The cationic surfactants can be generated by reacting a fatty acid modified with an amino alkyl group, an epihalohydrin, and a carboxylic acid. The cationic surfactants can be generated by reacting a carboxylic acid, an epihalohydrin, and a catalyst to afford a halo-substituted alkyl ester, followed by reacting the halo-substituted alky ester with a fatty acid modified with an amino alkyl group.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: March 29, 2022
    Assignee: Saudi Arabian Oil Company
    Inventors: Xuan Zhang, Ming Han, Jinxun Wang
  • Methods of synthesizing 4-valyloxybutyric acid
    Patent number: 11279669
    Abstract: The present disclosure is directed synthetic methods for the preparation of 4-valyloxybutyric acid. The synthetic methods described herein employ a diverse array of protecting group strategies and reaction conditions. Additionally, the present disclosure is directed to compounds useful as synthetic intermediates in the preparation of 4-valyloxybutyric acid.
    Type: Grant
    Filed: June 18, 2021
    Date of Patent: March 22, 2022
    Assignee: XWPHARMA LTD.
    Inventors: Jia-Ning Xiang, Hao-Wei Shih, Xiaoming Wu, Xuan Zhang, James Tien
  • SULFONATED POLYMER
    Publication number: 20220073662
    Abstract: Copolymer compositions and methods of making copolymer compositions with enhanced stability in high temperature and high salinity environments. The copolymers include hydrophobic monomers and sulfonated monomers. The sulfonated monomers can include 2-acrylamido-2-methylpropane sulfonic acid and allyl sulfonate. The sulfonated monomers increase the stability of the polymers in harsh conditions, and in high temperature, high salinity environments. The sulfonated monomers also reduce or prevent the hydrolysis of acrylamide groups, and therefore enhance the stability of the copolymer. The copolymer compositions can be made with free radical polymerization and an initiation complex.
    Type: Application
    Filed: September 9, 2020
    Publication date: March 10, 2022
    Inventors: Xuan Zhang, Ming Han, Jian Hou, Jinxun Wang
  • Liquid crystal composition, liquid crystal display element and liquid crystal display
    Patent number: 11268027
    Abstract: A liquid crystal composition, and a liquid crystal display element or liquid crystal display comprising the liquid crystal composition, and belongs to the field of liquid crystal display, wherein the liquid crystal composition comprises a compound represented by formula I, one or more compounds represented by formula II, one or more compounds represented by formula III, one or more compounds represented by formula IV, and at least one polymerizable compound, and has a large dielectric anisotropy (??) and a large optical anisotropy (?n), and has an obvious advantage in the development of a liquid crystal display having a high transmittance and a low cell thickness.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: March 8, 2022
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Sumin Kang, Zhian Liang, Guoliang Yun, Ruixiang Liang, Jiaming Li, Xuan Zhang
  • METHODS OF SYNTHESIZING 4-VALYLOXYBUTYRIC ACID
    Publication number: 20220055982
    Abstract: The present disclosure is directed synthetic methods for the preparation of 4-valyloxybutyric acid. The synthetic methods described herein employ a diverse array of protecting group strategies and reaction conditions. Additionally, the present disclosure is directed to compounds useful as synthetic intermediates in the preparation of 4-valyloxybutyric acid.
    Type: Application
    Filed: June 18, 2021
    Publication date: February 24, 2022
    Inventors: JIA-NING XIANG, HAO-WEI SHIH, XIAOMING WU, XUAN ZHANG, JAMES TIEN
  • Liquid crystal composition, liquid crystal display element and liquid crystal display
    Patent number: 11254873
    Abstract: A liquid crystal composition, and a liquid crystal display element or liquid crystal display including the liquid crystal composition and belonging to the field of liquid crystal display. The liquid crystal composition includes a compound represented by formula I, a compound represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound. The liquid crystal composition simultaneously has a low rotary viscosity, a large refractive index, and a fast response speed.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: February 22, 2022
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL, CO., LTD.
    Inventors: Sumin Kang, Zhian Liang, Ruixiang Liang, Jiaming Li, Guoliang Yun, Xuan Zhang
  • Liquid crystal composition, liquid crystal display element and liquid crystal display
    Patent number: 11242487
    Abstract: A liquid crystal composition, and a liquid crystal display element or liquid crystal display comprising the liquid crystal composition, and belongs to the field of liquid crystal display, the liquid crystal composition of the present disclosure comprising a compound represented by formula I, one or more compounds represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound. The liquid crystal composition simultaneously has a low rotary viscosity (?1), a larger dielectric anisotropy (??), and a fast response speed.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: February 8, 2022
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Sumin Kang, Zhian Liang, Guoliang Yun, Xuan Zhang, Jiaming Li, Ruixiang Liang
  • Liquid crystal composition, and liquid crystal display element and liquid crystal display
    Patent number: 11242486
    Abstract: A liquid crystal composition, and a liquid crystal display element or liquid crystal display comprising the liquid crystal composition, and belongs to the field of liquid crystal display. The liquid crystal composition comprises a compound represented by formula I, a compound represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound. The liquid crystal composition has a higher clearing point (CP), a large K value, a suitable optical anisotropy (?n), and a fast response speed.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: February 8, 2022
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Sumin Kang, Zhian Liang, Ruixiang Liang, Guoliang Yun, Jiaming Li, Xuan Zhang
  • STORAGE STRUCTURE OF DATA OBJECT, METHOD AND SYSTEM FOR STORING AND DYNAMICALLY MANAGING DATA OBJECT ON COMPUTER, AND STORAGE MEDIUM AND ELECTRONIC DEVICE
    Publication number: 20220035820
    Abstract: This application discloses a storage structure of a data object, a method and a system for storing and dynamically managing data objects on a computer, a storage medium and an electronic device. In the method, a data object template containing attribute tuples is constructed and stored, and then the data object template is read into the memory and the storage, update, query and deletion process of data objects is managed based on the data object template.
    Type: Application
    Filed: October 18, 2021
    Publication date: February 3, 2022
    Inventors: Xiaoyong CHEN, Songqiang TANG, Yexing ZHANG, Guoguang WANG, Danpeng GU, Shuankang HE, Lingheng ZHU, Yuanxiang WU, Xuan ZHANG
  • PREPARATION OF CATIONIC SURFACTANTS
    Publication number: 20220033348
    Abstract: Compositions that include cationic surfactants and methods of synthesizing compositions that include cationic surfactants. The surfactants include a quaternary amine and a saturated or unsaturated alkyl chain with 4 to 28 carbons. The surfactants can be generated by reacting a fatty acid modified with an amino alkyl group and an epihalohydrin in the presence of a base. The cationic surfactants can be generated by reacting a fatty acid modified with an amino alkyl group, an epihalohydrin, and a carboxylic acid. The cationic surfactants can be generated by reacting a carboxylic acid, an epihalohydrin, and a catalyst to afford a halo-substituted alkyl ester, followed by reacting the halo-substituted alky ester with a fatty acid modified with an amino alkyl group.
    Type: Application
    Filed: July 29, 2020
    Publication date: February 3, 2022
    Inventors: Xuan Zhang, Ming Han, Jinxun Wang
  • WOODY ROOTSTOCK FOR EFFICIENT GRAFTING OF SOLANACEOUS VEGETABLES AND EFFICIENT GRAFTING AND SEEDLING CULTURE METHOD THEREOF
    Publication number: 20220022378
    Abstract: The present application discloses a woody rootstock for efficient grafting of solanaceous vegetables and an efficient grafting and seedling culture method thereof. According to the present application, a woody rootstock clone with high consistency is provided through tissue culture, efficient grafting is completed through sleeve grafting technology, and the grafting survival rate is improved by regulating the healing environment. A new idea for efficient industrial grafting of solanaceous vegetables is provided, scions are imparted with new features through distant grafting, and the problems of low grafting efficiency and low survival rate are solved. The method has the advantages of strong operability, simplicity, high efficiency and low cost, and provides a technical support for the industrial production of grafted seedlings of solanaceous vegetables.
    Type: Application
    Filed: October 11, 2021
    Publication date: January 27, 2022
    Inventors: Liping CHEN, Tingjin WANG, Lu YUAN, Ke LIU, Aijun ZHANG, Yang YANG, Xuan ZHANG, Yuzhuo LI, Zhenyu QI
  • SYNTHESIS OF A CATIONIC SURFMER AND ITS COPOLYMERS FOR ENHANCED OIL RECOVERY
    Publication number: 20220025090
    Abstract: Provided is a quaternary ammonium surfmer, that may have the following general formula (I): N+—R1R2R3R4 (X?), where: R1 and R2 may independently be H or a C1-C3 alkyl, R3 may be a C19+ amidoalkyl group, R4 may be a C3-C6 alkyl having a terminal olefin double bond group, and X may be a halogen. Further provided is a method for synthesizing the quaternary ammonium surfmer and a method for recovering hydrocarbons from a subterranean formation that may include injecting a treatment fluid comprising the quaternary ammonium surfmer into the subterranean formation.
    Type: Application
    Filed: July 22, 2020
    Publication date: January 27, 2022
    Applicant: SAUDI ARABIAN OIL COMPANY
    Inventors: Xuan Zhang, Ming Han, Limin Xu
  • Enhanced pivot table creation and interaction
    Patent number: 11222171
    Abstract: Systems, methods, and software are disclosed herein for enhanced pivot table creation and interaction. In an implementation, a view including a formula bar is rendered in a user interface to a spreadsheet application. In response to receiving a user initialization input, the view is rendered to hide the formula bar and display a configuration bar configured to receive at least one pivot table parameter. A pivot table is generated based on the at least one pivot table parameter. The view is rendered to display the formula bar after generation of the pivot table.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: January 11, 2022
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Yi Zhang, Sangeeta Mudnal, Jingxia Xing, Xuan Zhang
  • FAST AND EFFICIENT SYSTEM AND METHOD FOR DETECTING AND PREDICTING ROWHAMMER ATTACKS
    Publication number: 20210406384
    Abstract: Embodiments provide for predicting rowhammer attack vulnerability of one or more memory cells of a direct random access memory (DRAM) chip, the DRAM chip including a plurality of memory cells. An example method, determines, for each memory cell of a subset of memory cells of the plurality of memory cells, a leakage time t, a resistance of intrinsic leakage RL based at least in part on the leakage time t, an activation time of an adjacent aggressor row to flip a bit in the memory cell, a resistance of coupling leaking RSW based at least in part on the activation time, and a toggling count. The method identifies, based at least in part on one or more of the RSW, RL, or toggling count, whether the direct random memory access (DRAM) chip is vulnerable to a rowhammer attack.
    Type: Application
    Filed: June 24, 2021
    Publication date: December 30, 2021
    Inventors: Yier Jin, Yichen Jiang, Xuan Zhang, Huifeng Zhu, Xiaolong Guo
  • MASK ASSEMBLY, MAIN MASK, AND MATING MASK
    Publication number: 20210359209
    Abstract: Embodiments of the present disclosure provide a main mask, a mating mask, and a mask assembly. The mask assembly includes a main mask having an evaporation area and a mating mask having a mating area. An effective evaporation area of the main mask corresponds to a display area of a display panel. A first mating area of the mating mask is provided with a first mating opening, and an orthographic projection of the first mating opening on the mating mask completely covers an orthographic projection of the effective evaporation opening on the mating mask. A second mating area of the mating mask shields an ineffective evaporation opening in an ineffective evaporation area of the main mask.
    Type: Application
    Filed: November 1, 2018
    Publication date: November 18, 2021
    Inventors: Bing HAN, Xuliang WANG, Xuan ZHANG, Shuaiyan GAN, Feng GAO
  • MASK, MASK ASSEMBLY, AND METHOD FOR MANUFACTURING THE MASK
    Publication number: 20210324530
    Abstract: The present disclosure relates to masks, mask assemblies, and methods for manufacturing masks. The mask is configured to be tensioned and soldered on a support frame. The mask is an electroformed mask. The mask includes an evaporation area, a non-evaporation area, and a soldering area used to be soldered to the support frame. At least the soldering area is doped with magnetic metal ions, thereby improving soldering performance of the soldering area.
    Type: Application
    Filed: November 1, 2018
    Publication date: October 21, 2021
    Inventors: Mingxing LIU, Xuliang WANG, Feng GAO, Xuan ZHANG, Shuaiyan GAN
  • Liquid crystal display device
    Patent number: 11150518
    Abstract: Provided is a liquid crystal display device comprising a first substrate, a second substrate, and a liquid crystal composition disposed between said first substrate and said second substrate, wherein a surface of said first substrate in contact with said liquid crystal composition is provided with an alignment layer, while said second substrate has no alignment layer; and said liquid crystal composition comprises a liquid crystal compound, a self-aligning agent, and a polymerizable compound represented by Formula I,
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: October 19, 2021
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Zhian Liang, Jiaming Li, Sumin Kang, Xuan Zhang, Dongmei Wang
  • Profile clustering for homogenous instance analysis
    Patent number: 11115494
    Abstract: Techniques for profile clustering for homogenous instance analysis are described herein. An aspect includes collecting for each of a plurality of homogenous instances in a cloud computing environment, respective profiling information, the profiling information comprising counter data. Another aspect includes identifying a code unit for analysis. Another aspect includes aggregating counters corresponding to the code unit for each of the plurality of homogenous instances from the respective profiling information. Another aspect includes determining a cluster comprising a subset of the plurality of homogenous instances based on the aggregated counters.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: September 7, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Yi Xuan Zhang, Qi Liang, Gui Yu Jiang, Chao Jun Wei, Yu Zhuo Sun
  • INSULATION BOARD WITH IMPROVED PERFORMANCE
    Publication number: 20210270038
    Abstract: A roof assembly, having: a roof deck; an insulation board assembly mounted onto the roof deck; and a roofing membrane adhered onto the insulation board assembly, wherein the insulation board assembly comprises: a foam insulation board, a woven top facer on a top side of the foam insulation board, and a woven bottom facer on a bottom side of the foam insulation board.
    Type: Application
    Filed: May 17, 2021
    Publication date: September 2, 2021
    Applicant: CARLISLE CONSTRUCTION MATERIALS, LLC
    Inventors: Matthew LEATHERMAN, Xuan ZHANG, Cody TURNOW
  • PROFILE CLUSTERING FOR HOMOGENOUS INSTANCE ANALYSIS
    Publication number: 20210266375
    Abstract: Techniques for profile clustering for homogenous instance analysis are described herein. An aspect includes collecting for each of a plurality of homogenous instances in a cloud computing environment, respective profiling information, the profiling information comprising counter data. Another aspect includes identifying a code unit for analysis. Another aspect includes aggregating counters corresponding to the code unit for each of the plurality of homogenous instances from the respective profiling information. Another aspect includes determining a cluster comprising a subset of the plurality of homogenous instances based on the aggregated counters.
    Type: Application
    Filed: February 26, 2020
    Publication date: August 26, 2021
    Inventors: Yi Xuan Zhang, QI LIANG, Gui Yu Jiang, Chao Jun Wei, Yu Zhuo Sun