Patents by Inventor Yuxiang Chen

Yuxiang Chen 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: 20210207292
    Abstract: The invention relates to the technical field of textile printing and dyeing, in particular to a method for preparing yarn with cloud dyeing effect; dyes with more than one color are mixed, and a small amount of dispersing agent is added, so that the pigment is not completely uniformly mixed, and the yarn obtained by extrusion molding of the pigment mixed spinning raw material has a randomly distributed multi-color cloud dyeing effect, and the cloud dyeing yarn with multi-color cloud dyeing effect is prepared, and compared with the cloth blank prepared by the traditional single-color yarn, the prepared cloth blank has a more three-dimensional pattern effect.
    Type: Application
    Filed: March 25, 2021
    Publication date: July 8, 2021
    Inventors: Huayu Fang, Daneshvar Kamran, Zhijian Fang, Yishu Lai, Yuxiang Chen
  • Publication number: 20210161131
    Abstract: The present invention discloses the preparation method of cis-p-menthane-1,8-di-secondary amine compounds and their application in weed control. The preparation method is as follows: cis-p-menthane-1,8-di-Schiff base compounds are used as the raw material, and the reducing agent is added in batches into the raw material in a polar organic solvent at ?10˜50° C. to react for 1˜24 h; after the reaction is complete, the reaction solution is quenched with distilled water and extracted with dichloromethane, and the extract phase is dried with anhydrous sodium sulfate, filtered with a filter and then distilled under reduced pressure to obtain crude cis-p-menthane-1,8-di-secondary amine compounds, which are purified into the pure product through recrystallization or silica gel column chromatography.
    Type: Application
    Filed: April 22, 2020
    Publication date: June 3, 2021
    Applicants: Research Institute of Forestry New Technology, Chinese Academy of Forestry, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry
    Inventors: Shichao XU, Zhendong ZHAO, Xiaojing ZENG, Jing WANG, Huanhuan DONG, Hongmei ZHANG, Yuxiang CHEN, Liangwu BI
  • Publication number: 20200346993
    Abstract: A catalyst containing LF-type B acid preparing ethylene using direct conversion of syngas is a composite catalyst and formed by compounding component A and component B in a mechanical mixing mode. The active ingredient of the component A is a metal oxide; the component B is a zeolite of MOR topology; and a weight ratio of the active ingredients in the component A to the component B is 0.1-20. The reaction process has an extremely high product yield and selectivity, with the selectivity for light olefin reaching 80-90%, wherein ethylene has high space time yield and can reach selectivity of 75-80%. Meanwhile, the selectivity for a methane side product is extremely low (<15%).
    Type: Application
    Filed: January 28, 2019
    Publication date: November 5, 2020
    Inventors: Xiulian PAN, Feng JIAO, Xinhe BAO, Yuxiang CHEN
  • Publication number: 20200283467
    Abstract: Nucleoside or nucleotide analog compounds having the structure shown below, a method for preparing them, and applications in nucleic acid sequencing are disclosed. The compounds have formula (I): wherein L1, L2, and L3 are each independently a covalent bond or a covalently linked group; B is a base or a base derivative selected from purines, pyrimidines, or analogs thereof; R1 is —OH, a phosphate group, or a nucleotide; R2 as H or a cleavable group; R3 is a detectable group or a targeting group; R5 is an inhibitory group; R4 is H, —NH2, or —OR6, wherein R6 is H or a cleavable group; and C is a cleavable group or a cleavable bond.
    Type: Application
    Filed: May 26, 2020
    Publication date: September 10, 2020
    Inventors: Bin LIU, Luyang ZHAO, Yuxiang CHEN, Bo YANG, Jie JIAN, Fang CHEN, Qin YAN
  • Patent number: 10674723
    Abstract: This invention discloses a type of 1,8-bis(Schiff base)-p-menthane derivatives as well as their preparation method and applications. The reaction of 1,8-diamino-p-menthane with a substituted benzaldehyde was carried out in a polar organic solvent at 0° C.-75° C. for 1-48 h. After the completion of the reaction, part of the solvent was distilled off to perform recrystallization to get a 1,8-bis(Schiff base)-p-menthane derivative, whose pre-emergence herbicidal activity against ryegrass was determined by using the Petri dish seed germination method. The 1,8-bis(Schiff base)-p-menthane derivatives, obtained with this method in high yield and mild reaction conditions, have a good inhibitory effect on the growth of annual ryegrass, and low toxicity.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: June 9, 2020
    Assignee: INSTITUTE OF CHEMICAL INDUSTRY OF FOREST PRODUCTS, CAF
    Inventors: Zhendong Zhao, Shichao Xu, Shouji Zhu, Jing Wang, Liangwu Bi, Yuxiang Chen, Yanju Lu, Yan Gu
  • Patent number: 10393811
    Abstract: A quantitative evaluation method for the reliability of a Markov model switched reluctance motor system. The method comprises: solving a probability matrix P?T(t) of a switched reluctance motor system being in any survival state at any time t via a state conversion diagram of the switched reluctance motor system; calculating the sum of various elements of the probability matrix P?T(t) of the survival state, so that a reliability function R(t) is obtained; and thus calculating the average working time of the switched reluctance motor system before failure, thereby realizing the quantitative evaluation of the switched reluctance motor system and satisfying the requirements for the reliability analysis of a switched reluctance motor drive system. This disclosure has a good engineering application value.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: August 27, 2019
    Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
    Inventors: Hao Chen, Xing Wang, Yuxiang Chen, Huan Yang
  • Patent number: 10171559
    Abstract: A network device stores a Virtual Extensible Local Area Network (VxLAN) Tunnel Endpoint (VTEP) membership information that associates VxLANs each with a corresponding set of VTEPs authorized to originate VxLAN packets on that VxLAN. The network device receives from a communication network a VxLAN packet that identifies a VxLAN and an originating VTEP. The VTEP compares the originating VTEP to the set of VTEPs associated with the VxLAN in the VTEP membership information that matches the identified VxLAN. If the comparison indicates that the originating VTEP is not included in the set of VTEPs authorized to originate VxLAN packets, the VTEP discards the received VxLAN packet. Otherwise the VTEP further processes the VxLAN packet.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: January 1, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Feng Cai, Yuxiang Chen, Danmu Wu, Zhiyong Fang
  • Publication number: 20180110219
    Abstract: This invention discloses a type of 1,8-bis(Schiffbase)-p-menthane derivatives as well as their preparation method and applications. The reaction of 1,8-diamino-p-menthane with a substituted benzaldehyde was carried out in a polar organic solvent at 0° C.-75° C. for 1-48 h. After the completion of the reaction, part of the solvent was distilled off to perform recrystallization to get a 1,8-bis(Schiff base)-p-menthane derivative, whose pre-emergence herbicidal activity against ryegrass was determined by using the Petri dish seed germination method. The 1,8-bis(Schiff base)-p-menthane derivatives, obtained with this method in high yield and mild reaction conditions, have a good inhibitory effect on the growth of annual ryegrass, and low toxicity.
    Type: Application
    Filed: October 26, 2017
    Publication date: April 26, 2018
    Applicant: INSTITUTE OF CHEMICAL INDUSTRY OF FOREST PRODUCTS, CAF
    Inventors: Zhendong ZHAO, Shichao XU, Shouji ZHU, Jing WANG, Liangwu BI, Yuxiang CHEN, Yanju LU, Yan GU
  • Publication number: 20160161561
    Abstract: A quantitative evaluation method for the reliability of a Markov model switch reluctance motor system. The method comprises: solving a probability matrix P?T(t) of a switch reluctance motor system being in any survival state at any time t via a state conversion diagram of the switch reluctance motor system; calculating the sum of various elements of the probability matrix P?T(t) of the survival state, so that a reliability function R(t) is obtained; and thus calculating the average working time of the switch reluctance motor system before failure, thereby realizing the quantitative evaluation of the switch reluctance motor system and satisfying the requirements for the reliability analysis of a switch reluctance motor drive system. This disclosure has a good engineering application value.
    Type: Application
    Filed: August 22, 2014
    Publication date: June 9, 2016
    Inventors: Hao Chen, Xing Wang, Yuxiang Chen, Huan Yang
  • Publication number: 20160149808
    Abstract: A network device stores a Virtual Extensible Local Area Network (VxLAN) Tunnel Endpoint (VTEP) membership information that associates VxLANs each with a corresponding set of VTEPs authorized to originate VxLAN packets on that VxLAN. The network device receives from a communication network a VxLAN packet that identifies a VxLAN and an originating VTEP. The VTEP compares the originating VTEP to the set of VTEPs associated with the VxLAN in the VTEP membership information that matches the identified VxLAN. If the comparison indicates that the originating VTEP is not included in the set of VTEPs authorized to originate VxLAN packets, the VTEP discards the received VxLAN packet. Otherwise the VTEP further processes the VxLAN packet.
    Type: Application
    Filed: November 21, 2014
    Publication date: May 26, 2016
    Inventors: Feng Cai, Yuxiang Chen, Danmu Wu, Zhiyong Fang
  • Patent number: 9249026
    Abstract: The present invention relates to a method for preparing graphene from a biomass-derived carbonaceous mesophase, which includes: soaking a base substance into an ethanol solution of a biomass-derived carbonaceous mesophase; after a certain period of time, taking out and drying the base substance, a layer of biomass-derived carbonaceous mesophase film being attached to the surface of the base substance; subjecting the base substance to a heat treatment under the protection of a hydrogen atmosphere, then a stacked graphene film was formed on the surface of the base substance; and further subjecting the base substance to ultrasonic dispersion in an alcohol solvent to separate the graphene film and the base substance, then a graphene alcohol was formed. The preparation process of the present invention is easy to implement. The raw material biomass-derived carbonaceous mesophase has abundant sources and is low in cost. The preparation process has low energy consumption, and is applicable to mass production.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: February 2, 2016
    Assignees: Shanghai Jiaotong University, SHANGHAI SWITCHDIY DIGITAL TECHNOLOGY CO., LTD.
    Inventors: Binyuan Zhao, Yuxiang Chen, Yijian Lai, Yuesheng Ning, Lei Wang, Jie Zhou, Tongxiang Fan
  • Publication number: 20150133568
    Abstract: The present invention relates to a method for preparing graphene from a biomass-derived carbonaceous mesophase, which includes: soaking a base substance into an ethanol solution of a biomass-derived carbonaceous mesophase; after a certain period of time, taking out and drying the base substance, a layer of biomass-derived carbonaceous mesophase film being attached to the surface of the base substance; subjecting the base substance to a heat treatment under the protection of a hydrogen atmosphere, then a stacked graphene film was formed on the surface of the base substance; and further subjecting the base substance to ultrasonic dispersion in an alcohol solvent to separate the graphene film and the base substance, then a graphene alcosol was formed. The preparation process of the present invention is easy to implement. The raw material biomass-derived carbonaceous mesophase has abundant sources and is low in cost. The preparation process has low energy consumption, and is applicable to mass production.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 14, 2015
    Applicants: Shanghai Switchdiy Digital Technology Co., Ltd., Shanghai Jiao Tong University
    Inventors: BINYUAN ZHAO, YUXIANG CHEN, YIJIAN LAI, YUESHENG NING, LEI WANG, JIE ZHOU, TONGXIANG FAN
  • Patent number: 8946469
    Abstract: Disclosed is a process for preparing isopimaric acid, comprising the following steps: First step: dissolving thermally isomerized rosin in acetone, adding in drops a solution of isobutanolamine in acetone to form a precipitate, standing, filtering, washing with ethanol, and drying to obtain crude ammonium salt of isopimaric acid; recrystallizing the crude ammonium salt of isopimaric acid according to multi-recrystallization, and drying to obtain purified crystal of ammonium salt of isopimaric acid; Second step: dissolving the purified crystal of ammonium salt of isopimaric acid obtained in the first step in ether, adding hydrochloric acid in portions until the crystal of ammonium salt of isopimaric acid disappears, removing a water layer and washing the ether layer with water to neutral, evaporating the ether, dissolving the residue in acetone, adding water slowly into the solution dropwise until crystals cease to grow, then filtering and drying to obtain purified isopimaric acid.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: February 3, 2015
    Assignee: Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry
    Inventors: Zhendong Zhao, Xingdi Li, Liangwu Bi, Yuxiang Chen, Yan Gu, Dongmei Li, Jing Wang
  • Publication number: 20140148572
    Abstract: A method for preparing pimaric acid type resin acids includes: step (1) adding refined resin acid, turpentine, or rosin along with maleic anhydride at a mass ratio of 1:0.3-1.5 into a reaction bottle, dissolving the ingredients into a C1-C10 lower fatty acid solvent, the mass ratio of the C1-C10 low fatty acid to refined resin acid is 0.05-30:1, then carrying out additional reaction by heating directly or with assistance of a microwave, subsequently cooling, crystallizing, filtering, and washing; and step (2) combining the filtrates collected in step (1), stripping the solvent by vacuum distillation to obtain pimaric acid type resin acid coarse product, dissolving the resulting coarse product in NaOH aqueous solution to prepare aqueous solution of pimaric acid type resin acid salt, adjusting the pH to 6-14 with a mineral acid or an organic acid, and either directly purifying or acidifying followed by purifying to obtain the final product.
    Type: Application
    Filed: January 31, 2014
    Publication date: May 29, 2014
    Applicant: INSTITUTE OF CHEMICAL INDUSTRY OF FOREST PRODUCTS, CAF
    Inventors: Zhendong Zhao, Yuxiang Chen, Liangwu Bi, Yan Gu, Dongmei Li, Jing Wang, Yanju Lu
  • Patent number: 8680232
    Abstract: A method for preparing pimaric acid type resin acids includes the following steps: step (1) adding refined resin acid, turpentine, or rosin along with maleic anhydride at a mass ratio of 1:0.3-1.5 into a reaction bottle, dissolving the ingredients into a C1-C10 lower fatty acid solvent, the mass ratio of the C1-C10 low fatty acid to refined resin acid is 0.05-30:1, then carrying out additional reaction by heating directly or with assistance of a microwave, subsequently cooling, crystallizing, filtering, and washing; and step (2) combining the filtrates collected in step (1), stripping the solvent by vacuum distillation to obtain pimaric acid type resin acid coarse product, dissolving the resulting coarse product in NaOH aqueous solution to prepare aqueous solution of pimaric acid type resin acid salt, adjusting the pH level to 6-14 with a mineral acid or an organic acid while stirring, and either directly purifying or acidifying followed by purifying, the resulting precipitation to obtain the final product.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: March 25, 2014
    Assignee: Institute of Chemical Industry of Forest Products, CAF
    Inventors: Zhendong Zhao, Yuxiang Chen, Liangwu Bi, Yan Gu, Dongmei Li, Jing Wang, Yanju Lu
  • Patent number: 8499948
    Abstract: A suction type bottle cap has a bottle cap and a suction device. The suction device comprises a vacuum draw bar, a liquid suction cavity, a piston and at least one suction pipe (5). The liquid suction cavity is connected with the bottle cap, the upper end of the suction pipe communicates with the liquid suction cavity, the lower end of the vacuum draw bar is placed in the liquid suction cavity, and the piston is arranged at the lower end of the vacuum draw bar. The suction type bottle cap can prevent liquid from polluting the bottle mouth so as to avoid unnecessary waste, is convenient for liquid suction and accurate in measurement, and is suitable for the suction of various liquids.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: August 6, 2013
    Inventor: Yuxiang Chen
  • Publication number: 20120004390
    Abstract: A method for preparing pimaric acid type resin acids includes the following steps: step (1) adding refined resin acid, turpentine, or rosin along with maleic anhydride at a mass ratio of 1:0.3-1.5 into a reaction bottle, dissolving the ingredients into a C1-C10 lower fatty acid solvent, the mass ratio of the C1-C10 low fatty acid to refined resin acid is 0.05-30:1, then carrying out additional reaction by heating directly or with assistance of a microwave, subsequently cooling, crystallizing, filtering, and washing; and step (2) combining the filtrates collected in step (1), stripping the solvent by vacuum distillation to obtain pimaric acid type resin acid coarse product, dissolving the resulting coarse product in NaOH aqueous solution to prepare aqueous solution of pimaric acid type resin acid salt, adjusting the pH level to 6-14 with a mineral acid or an organic acid while stirring, and either directly purifying or acidifying followed by purifying, the resulting precipitation to obtain the final product.
    Type: Application
    Filed: March 18, 2010
    Publication date: January 5, 2012
    Inventors: Zhendong Zhao, Yuxiang Chen, Liangwu Bi, Yan Gu, Dongmei Li, Jing Wang, Yanju Lu
  • Publication number: 20110253665
    Abstract: A suction type bottle cap has a bottle cap and a suction device. The suction device comprises a vacuum draw bar, a liquid suction cavity, a piston and at least one suction pipe (5). The liquid suction cavity is connected with the bottle cap, the upper end of the suction pipe communicates with the liquid suction cavity, the lower end of the vacuum draw bar is placed in the liquid suction cavity, and the piston is arranged at the lower end of the draw bar. The suction type bottle cap can prevent liquid from polluting the bottle mouth so as to avoid unnecessary waste, is convenient for liquid suction and accurate in measurement, and is suitable for the suction of various liquids.
    Type: Application
    Filed: December 24, 2009
    Publication date: October 20, 2011
    Inventor: Yuxiang Chen
  • Publication number: 20110060160
    Abstract: Disclosed is a process for preparing isopimaric acid, comprising the following steps: First step: dissolving thermally isomerized rosin in acetone, adding in drops a solution of isobutanolamine in acetone to form a precipitate, standing, filtering, washing with ethanol, and drying to obtain crude ammonium salt of isopimaric acid; recrystallizing the crude ammonium salt of isopimaric acid according to multi-recrystallization, and drying to obtain purified crystal of ammonium salt of isopimaric acid; Second step: dissolving the purified crystal of ammonium salt of isopimaric acid obtained in the first step in ether, adding hydrochloric acid in portions until the crystal of ammonium salt of isopimaric acid disappears, removing a water layer and washing the ether layer with water to neutral, evaporating the ether, dissolving the residue in acetone, adding water slowly into the solution dropwise until crystals cease to grow, then filtering and drying to obtain purified isopimaric acid.
    Type: Application
    Filed: November 4, 2010
    Publication date: March 10, 2011
    Inventors: Zhendong Zhao, Xingdi Li, Liangwu Bi, Yuxiang Chen, Yan Gu, Dongmei Li, Jing Wang