Patents by Inventor Yujun Liu
Yujun 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).
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Patent number: 11984244Abstract: The present disclosure discloses a sintered neodymium-iron-boron magnet and a preparation method thereof. The sintered neodymium-iron-boron magnet includes the following raw materials in mass percentage: 1%-40% of an iron powder or a steel powder with a magnetic induction intensity of more than 1.2 T, not more than 10% of a praseodymium-neodymium metal hydride powder, and a remainder of a neodymium-iron-boron fine powder, wherein the mass percentages of the above raw materials add up to 100%. The preparation method includes: weighing the raw materials in mass percentage; mixing the weighed raw materials uniformly, and then subjecting to magnetic-field press molding, isostatic pressing, sintering and tempering to obtain the sintered neodymium-iron-boron magnet.Type: GrantFiled: November 20, 2021Date of Patent: May 14, 2024Assignees: Baotou Jinmeng Magnetic Materials Co., Ltd.Inventors: Yujun Zeng, Minglei Han, Zhaoyong Liu, Xueliang Zhang, Zhigang Xue, Quanjin Zeng, Yuxiang Dong, Junxing Zhao, Lan Feng, Ze Liu, Xia Zhang, Jialiang Zhang, Xiangjun Chen
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Publication number: 20240150272Abstract: A processes for purifying glycol ethers, comprises (a) providing a glycol ether to a first vessel, the glycol ether, the glycol ether having the following formula: R1—O— (CHR2CHR3) O)nR4; wherein R1 is an alkyl group having 1 to 9 carbon atoms or a phenyl group; wherein R2 and R3 each individually is hydrogen, a methyl group or an ethyl group, provided that when R3 is a methyl group or an ethyl group, R2 is hydrogen and provided that when R2 is a methyl group or an ethyl group, R3 is hydrogen; wherein R4 is hydrogen, an alkyl group having 1 to 4 carbon atoms, an acetyl group, or a propionyl group; and wherein n is an integer of 1 to 3; (b) filling the first vessel with inert gas; (c) heating the glycol ether in the first vessel to a sub-boiling temperature, wherein the sub-boiling temperature is at least 15° C.Type: ApplicationFiled: May 19, 2021Publication date: May 9, 2024Inventors: Qi Jiang, Kaoru Ohba, Yujun Liu
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Publication number: 20240145987Abstract: The present disclosure relates to a push-pull coaxial connector comprising: an external conductor, where the external conductor is configured to internally receive the matching external conductor of a mating connector, with concave parts or through holes on the inner surface of the side wall of the external conductor that house retainers and corresponding matching concave parts on the outer surface of the side wall of the mating external conductor, of which, there are one or more protrusions on the outer surface of the side wall of the external conductor; a sleeve surrounding the external conductor, where the sleeve is able to slide between the front position and rear position along the external conductor and is able to rotate around the circumference of the external conductor, of which, there are one or more corresponding notches to receive one or more protrusions on the rear surface of the sleeve; wherein, when the sleeve is at the front position, one or more protrusions are staggered away from one or moreType: ApplicationFiled: August 8, 2023Publication date: May 2, 2024Inventors: Jin Liu, Hongjuan An, Jien Zheng, Yujun Zhang
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Patent number: 11968427Abstract: This application provides a video message generation method and apparatus, an electronic device, and a storage medium. The video message generation method includes: receiving a comment instruction for a video; determining a target frame corresponding to the comment instruction in the video; obtaining input comment content of the target frame; and generating a video message based on the video, the target frame, and the comment content of the target frame.Type: GrantFiled: March 29, 2022Date of Patent: April 23, 2024Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITEDInventors: Fen He, Xuejun Sun, Han Liu, Liqiang Liu, Yujun Liu
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Publication number: 20240083837Abstract: It is related to a process for purifying organic amines. The process comprises (a) providing an organic amine to a first vessel (5), the organic amine having a normal boiling point at one bar; (b) filling the first vessel (5) with inert gas; (c) heating the organic amine in the first vessel (5) to a sub-boiling temperature, wherein the sub-boiling temperature is at least 15° C. less than the normal boiling point; (d) cooling the vapor from the first vessel (5) in a second vessel (20) to provide a liquid; and (e) contacting the organic amine with a resin polymer matrix, wherein the resin polymer matrix is embedded with an amino compound selected from the group consisting of iminodiacetic acid, aminomethylphosphonic acid or a combination thereof.Type: ApplicationFiled: May 19, 2021Publication date: March 14, 2024Inventors: Qi Jiang, Kaoru Ohba, Yujun Liu, Jongcheol Kim, Xue Chen, Li Mu
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Publication number: 20240066499Abstract: The present invention describes a method to remove metals present in a mixture comprising one or more organic amines comprising the step of contacting the mixture with a silica-polyethyleneimine adsorbent.Type: ApplicationFiled: March 21, 2022Publication date: February 29, 2024Inventors: Yujun Liu, Xue Chen, Stephen W. King, Towhid Hasan, Jerrod Ruddick, James York, Amarnath Singh
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Publication number: 20230242819Abstract: The present disclosure provides a composition. In an embodiment, the composition includes a mixture of an alcohol (1) and an alcohol (2). Alcohol (1) has the Structure (1): alcohol (2) has the Structure (2): wherein a is an integer from 1 to 2, R1 and R2 each independently is selected from the group consisting of hydrogen and an alkyl group, with the proviso that the total number of carbon atoms of R1 and R2 is 7, and R3 is selected from the group consisting of a butyl group, an isobutyl group, a pentyl group, and an isopentyl group.Type: ApplicationFiled: May 26, 2021Publication date: August 3, 2023Inventors: Wanglin Yu, Michael A. Brammer, Sally Demaio-Turner, Sung-Yu Ku, Jin Yang, Haifeng Shi, Bruce D. Hook, Yujun Liu, Jeff Johnson
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Publication number: 20230227727Abstract: The present disclosure provides a composition. In an embodiment, the composition includes 2-heptylundecanol; a member selected from the group consisting of 2-ethyhexanol and 2-propylheptanol; and a mixture of an alcohol (1) and an alcohol (2), alcohol (1) having the Structure (1) wherein R1 is selected from the group consisting of an ethyl group and a propyl group, R2 and R3 each independently is selected from the group consisting of hydrogen and an alkyl group, with the proviso that the total number of carbon atoms of R1 and R2 is 7, and alcohol (2) having the Structure (2) wherein R4 is selected from the group consisting of an n-propyl group, an isopropyl group, an n-butyl group, and an isobutyl group.Type: ApplicationFiled: May 27, 2021Publication date: July 20, 2023Inventors: Wanglin Yu, Michael A. Brammer, Sally Demaio-Turner, Sung-Yu Ku, Bruce D. Hook, Haifeng Shi, Jin Yang, Yujun Liu, Jeff Johnson
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Publication number: 20230227388Abstract: The present disclosure provides a process. In an embodiment, the process includes providing a purge stream composed of octene isomers. The process includes subjecting the purge stream to hydroformylation conditions, and forming a reaction product composed of nonanals.Type: ApplicationFiled: May 27, 2021Publication date: July 20, 2023Inventors: Michael A. Brammer, Sean W. Ewart, Wanglin Yu, Bruce D. Hook, Sally Demaio-Turner, Sung-Yu Ku, Yujun Liu, Jin Liu, Jianping Zeng
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Patent number: 11674146Abstract: Provided are a gene combination used for controlling foreign gene expression in a specific plant tissue, and a method applying the gene combination to cultivate a transgenic plant. The method is used to cultivate, for example, an endosperm zero expression-type transgenic rice, i.e., rice grain endosperm produced by the rice does not contain any transgenic product protein synthesis and accumulation.Type: GrantFiled: October 31, 2016Date of Patent: June 13, 2023Assignees: Zhejiang University, China National Rice Research InstituteInventors: Jumin Tu, Hao Chen, Peisong Hu, Ju Luo, Xiaobo Zhang, Yujun Liu
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Publication number: 20230117989Abstract: A method for purification of organic amines, comprising introducing a resin polymer matrix to a liquid containing at least an organic amine bonded to at least one metallic element, wherein the resin polymer matrix is embedded with an amino compound selected from the group consisting of iminodiacetic acid, aminomethylphosphonic acid or a combination thereof, and wherein the embedded resin polymer matrix binds the at least one metallic element, and the at least one metallic element is removed from the organic amine.Type: ApplicationFiled: April 8, 2020Publication date: April 20, 2023Inventors: Qi Jiang, Yujun Liu, Kaoru Ohba, Jongcheol Kim, Xue Chen, Li Mu, Jianhai Mu, Stephen W. King
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Publication number: 20220224983Abstract: This application provides a video message generation method and apparatus, an electronic device, and a storage medium. The video message generation method includes: receiving a comment instruction for a video; determining a target frame corresponding to the comment instruction in the video; obtaining input comment content of the target frame; and generating a video message based on the video, the target frame, and the comment content of the target frame.Type: ApplicationFiled: March 29, 2022Publication date: July 14, 2022Inventors: Fen HE, Xuejun SUN, Han LIU, Liqiang LIU, Yujun LIU
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Patent number: 10329399Abstract: Disclosed herein is a system for recovering olefins from a vent stream comprising an absorber; and a stripper; where the absorber and the stripper are in a recycle loop; and where the absorber is operative to treat a vent stream with a solvent to remove more than 99 wt % of a halogenated by-product contained in the vent stream and to recover 90 to 95 wt % of olefin molecules present in the vent stream; and where the stripper is operative to remove more than 99 wt % of the halogenated by-products present in the solvent; and where the solvent is recycled to the absorber.Type: GrantFiled: November 9, 2015Date of Patent: June 25, 2019Assignee: DOW GLOBAL TECHNOLOGIES LLCInventors: John G. Pendergast, Jr., Johnny W. Masey, Robert D. Swindoll, Yujun Liu
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Publication number: 20190093118Abstract: Provided are a gene combination used for controlling foreign gene expression in a specific plant tissue, and a method applying the gene combination to cultivate a transgenic plant. The method is used to cultivate, for example, an endosperm zero expression-type transgenic rice. i.e., rice grain endosperm produced by the rice does not contain any transgenic product protein synthesis and accumulation.Type: ApplicationFiled: October 31, 2016Publication date: March 28, 2019Applicants: ZHEJIANG UNIVERSITY, CHINA NATIONAL RICE RESEARCH INSTITUTEInventors: Jumin TU, Hao CHEN, Peisong HU, Ju LUO, Xiaobo ZHANG, Yujun LIU
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Publication number: 20170335084Abstract: Disclosed herein is a system for recovering olefins from a vent stream comprising an absorber; and a stripper; where the absorber and the stripper are in a recycle loop; and where the absorber is operative to treat a vent stream with a solvent to remove more than 99 wt % of a halogenated by-product contained in the vent stream and to recover 90 to 95 wt % of olefin molecules present in the vent stream; and where the stripper is operative to remove more than 99 wt % of the halogenated by-products present in the solvent; and where the solvent is recycled to the absorber.Type: ApplicationFiled: November 9, 2015Publication date: November 23, 2017Inventors: John G. PENDERGAST, Jr., Johnny W. MASEY, Robert D. SWINDOLL, Yujun LIU
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Patent number: 9579627Abstract: A novel microporous carbon molecular sieve may be used as the basis for carbon adsorbent pellets that have discrete areas of carbonized binder and of carbonized precursor, macropores having an average pore diameter greater than or equal to 1 micrometer and a total macroporosity of at least 30 percent, both as measured by mercury porosimetry, and micropores that are capable of selectively admitting a C2-C3 alkene and excluding a C2-C3 alkane, and a total microporosity ranging from 10 percent to 30 percent. The pellets may be prepared by pyrolyzing a pellet structure comprising a carbon forming, non-melting binder and a non-porous gel type sulfonated polystyrene precursor at a temperature ranging from 500° C. to 1000° C., under an inert atmosphere and other conditions suitable to form the described pellets. The pellets are particularly useful in pressure swing and temperature swing adsorption processes to separate C2-C3 alkane/alkene mixtures.Type: GrantFiled: March 24, 2014Date of Patent: February 28, 2017Assignee: Dow Global Technologies LLCInventors: Junqiang Liu, Mark K. Brayden, Edward M. Calverley, Steven R. Lakso, Yujun Liu, Marcos V. Martinez
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Publication number: 20160279625Abstract: Effect ion-exchange of an alpha-alumina supported zeolite (e.g. a MFI zeolite, an LTA zeolite or a FAU zeolite) membrane, which process comprises: a) placing the membrane, which has a first surface and a spaced apart second surface, the first and second surfaces defining therebetween the membrane, in an ion exchange apparatus such that the first surface is in contact with an ion exchange solution and the second surface is in contact with a vapor space that is connected to a source of reduced pressure; b) actuating the source of reduced pressure to create a pressure differential between the first and second membrane surfaces of at least 0.4 atmosphere (0.Type: ApplicationFiled: April 22, 2014Publication date: September 29, 2016Inventors: Sankar Nair, Seok Jhin Kim, Yujun Liu, John G. Pendergast, Ravindra S. Dixit, Jason S. Moore
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Publication number: 20160008787Abstract: A novel microporous carbon molecular sieve may be used as the basis for carbon adsorbent pellets that have discrete areas of carbonized binder and of carbonized precursor, macropores having an average pore diameter greater than or equal to 1 micrometer and a total macroporosity of at least 30 percent, both as measured by mercury porosimetry, and micropores that are capable of selectively admitting a C2-C3 alkene and excluding a C2-C3 alkane, and a total microporosity ranging from 10 percent to 30 percent. The pellets may be prepared by pyrolyzing a pellet structure comprising a carbon forming, non-melting binder and a non-porous gel type sulfonated polystyrene precursor at a temperature ranging from 500° C. to 1000° C., under an inert atmosphere and other conditions suitable to form the described pellets. The pellets are particularly useful in pressure swing and temperature swing adsorption processes to separate C2-C3 alkane/alkene mixtures.Type: ApplicationFiled: March 24, 2014Publication date: January 14, 2016Inventors: Junqiang Liu, Mark K. Brayden, Edward M. Calverley, Steven R. Lakso, Yujun Liu, Marcos V. Martinez
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Patent number: 8845975Abstract: A plant and process for producing alkylene oxides to control the production of silver chloride on a high efficiency silver catalyst is disclosed and described. The process involves reacting an alkylene and an organic chloride gas phase promoter with oxygen over the high efficiency silver catalyst. The sulfur concentration in the alkylene oxide reactor feed is controlled to reduce the production of silver chloride which acts as a catalyst poison.Type: GrantFiled: December 21, 2010Date of Patent: September 30, 2014Assignee: Dow Technology Investments LLCInventors: William H. Henstock, Juliana G. Serafin, Albert C. Liu, Hwaili Soo, Yujun Liu, Manuk Colakyan, Sagar Petkar
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Publication number: 20110160470Abstract: A plant and process for producing alkylene oxides to control the production of silver chloride on a high efficiency silver catalyst is disclosed and described. The process involves reacting an alkylene and an organic chloride gas phase promoter with oxygen over the high efficiency silver catalyst. The sulfur concentration in the alkylene oxide reactor feed is controlled to reduce the production of silver chloride which acts as a catalyst poison.Type: ApplicationFiled: December 21, 2010Publication date: June 30, 2011Applicant: DOW TECHNOLOGY INVESTMENTS LLCInventors: William H. Henstock, Juliana G. Serafin, Albert C. Liu, Hwaili Soo, Yujun Liu, Manuk Colakyan, Sagar Petkar