Patents by Inventor Xianzhong Li
Xianzhong 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).
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Publication number: 20240116960Abstract: Disclosed is a method of preparing glufosinate, and specifically a method of preparing glufosinate represented by formula (1) or its salt or enantiomer, or a mixture of its enantiomers in any ratio, comprising a step of hydrolyzing a compound of formula (III) to generate a compound of formula (1). Due to a distinctive reaction mechanism adopted in the method of the present disclosure, a halogenated hydrocarbon by-product in the Michaelis-Arbuzov reaction can be avoided and thus the destructive impact of the halogenated hydrocarbon by-product on ozone in the aerosphere can be prevented. Accordingly, the equipment and engineering investments required for the separation, purification, and collection of the foregoing by-product are eliminated, and the potential environmental and safety hazards brought by the foregoing by-product are also avoided.Type: ApplicationFiled: April 27, 2023Publication date: April 11, 2024Inventors: Wenjie TANG, Chengjun WU, Nan LI, Jianjie XU, Xianzhong TANG, Chunhui MAO
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Patent number: 10289634Abstract: A data-clustering method generates data clusters for a set of data points. A region of interest containing the data points and a center matrix for the region of interest are defined, where the center matrix includes an array of center points defining centers of overlapping circles. The data points are mapped to corresponding circles based on near center points. Pairs of overlapping circles are merged based on relative numbers of data points lying in overlap regions of the pairs of overlapping circles compared to total numbers of data points within the corresponding circles. Circles belonging to the one or more data clusters are identified based on merged pairs of overlapping circles, and data points belonging to the one or more data clusters are identified based on the corresponding circles. The method may be performed by a computer having a heterogeneous architecture with parallel processors.Type: GrantFiled: September 5, 2016Date of Patent: May 14, 2019Assignee: NXP USA, INC.Inventors: Xiong Xiao, Zhenyong Chen, Xianzhong Li
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Patent number: 10208145Abstract: The present invention provides a catalyst component for olefin polymerization, obtained by a reaction of magnesium, titanium, halogen and an internal electron donor, the internal electron donor comprising an imine compound as shown in Formula Z. The present invention also provides a preparation method of the catalyst component, and a catalyst for olefin polymerization containing the same. When the catalyst of the present invention is used for olefin polymerization reaction, the catalyst has a high activity, and a slow rate of activity decay, and the obtained polymer has a high isotacticity index, and a wide molecular weight distribution.Type: GrantFiled: April 24, 2015Date of Patent: February 19, 2019Assignees: China Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry, China Petroteum & Chemical CorporationInventors: Mingzhi Gao, Jun Wang, Haitao Liu, Jing Ma, Jianhua Chen, Jixing Ma, Xiaoxia Cai, Changxiu Li, Jianjun Hu, Xiaofan Zhang, Xianzhong Li, Zhihui Zhang, Ruilin Duan, Linna Yang, Changyou Ma
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Patent number: 10184017Abstract: The present invention discloses a catalyst component for propene polymerization, comprising titanium, magnesium, halogen, and internal electron donor A, wherein said internal electron donor A is selected from the compounds as shown in Formula I, in Formula I, R is selected from hydrogen, hydroxyl, and substituted or unsubstituted C1-C30 hydrocarbyl, preferably from hydrogen, hydroxyl, and substituted or unsubstituted C1-C20 alkyl, C6-C30 aryl, C6-C30 heteroaryl, C7-C30 alkylaryl and C7-C30 arylalkyl; R1 and R2 may be identical to or different from each other, and are selected from hydrogen and substituted or unsubstituted C1-C30 hydrocarbyl, preferably from hydrogen and substituted or unsubstituted C1-C20 alkyl, C6-C30 aryl, C7-C30 alkylaryl and C7-C30 arylalkyl. According to the present invention, by using the compound as shown in Formula I as internal electron donor compound for propene polymerization, the catalyst has a higher activity, and a slow rate of delay of activity.Type: GrantFiled: April 24, 2015Date of Patent: January 22, 2019Assignees: China Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry, China Petroleum & Chemical CorporationInventors: Jun Wang, Mingzhi Gao, Haitao Liu, Jing Ma, Jianhua Chen, Xiaoxia Cai, Jixing Ma, Changxiu Li, Jianjun Hu, Xiaofan Zhang, Xianzhong Li, Zhihui Zhang, Ruilin Duan, Linna Yang, Changyou Ma
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Patent number: 9822196Abstract: The present disclosure discloses a catalyst composition for olefin polymerization, comprising the following components: a): a solid catalyst component containing magnesium, titanium, halogens, and at least one internal electron donor having a lone pair of electrons; b): an aluminum alkyl compound; and c): an external electron donor containing a first external electron donor C1, which is a malonate compound. In the present disclosure, a catalyst composition having an external electron donor that contains a malonate compound is used in olefin polymerization, in particular propene polymerization, and can significantly improve catalytic activity and hydrogen response of the catalyst and expand molecular weight distribution of polymers, which facilitates development of different polymers.Type: GrantFiled: September 28, 2014Date of Patent: November 21, 2017Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATIONInventors: Changxiu Li, Mingzhi Gao, Haitao Liu, Jing Ma, Jianhua Chen, Xianzhong Li, Xiaoxia Cai, Jixing Ma, Jun Wang, Jianjun Hu
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Publication number: 20170132307Abstract: A data-clustering method generates data clusters for a set of data points. A region of interest containing the data points and a center matrix for the region of interest are defined, where the center matrix includes an array of center points defining centers of overlapping circles. The data points are mapped to corresponding circles based on near center points. Pairs of overlapping circles are merged based on relative numbers of data points lying in overlap regions of the pairs of overlapping circles compared to total numbers of data points within the corresponding circles. Circles belonging to the one or more data clusters are identified based on merged pairs of overlapping circles, and data points belonging to the one or more data clusters are identified based on the corresponding circles. The method may be performed by a computer having a heterogeneous architecture with parallel processors.Type: ApplicationFiled: September 5, 2016Publication date: May 11, 2017Inventors: XIONG XIAO, Zhenyong Chen, Xianzhong Li
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Publication number: 20170073441Abstract: The present invention provides a catalyst component for olefin polymerization, obtained by a reaction of magnesium, titanium, halogen and an internal electron donor, the internal electron donor comprising an imine compound as shown in Formula Z. The present invention also provides a preparation method of the catalyst component, and a catalyst for olefin polymerization containing the same. When the catalyst of the present invention is used for olefin polymerization reaction, the catalyst has a high activity, and a slow rate of activity decay, and the obtained polymer has a high isotacticity index, and a wide molecular weight distribution.Type: ApplicationFiled: April 24, 2015Publication date: March 16, 2017Applicants: China Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry, China Petroteum & Chemical CorporationInventors: Mingzhi GAO, Jun WANG, Haitao LIU, Jing MA, Jianhua CHEN, Jixing MA, Xiaoxia CAI, Changxiu LI, Jianjun HU, Xiaofan ZHANG, Xianzhong LI, Zhihui ZHANG, Ruilin DUAN, Linna YANG, Changyou MA
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Publication number: 20170044280Abstract: The present invention discloses a catalyst component for propene polymerization, comprising titanium, magnesium, halogen, and internal electron donor A, wherein said internal electron donor A is selected from the compounds as shown in Formula I, in Formula I, R is selected from hydrogen, hydroxyl, and substituted or unsubstituted C1-C30 hydrocarbyl, preferably from hydrogen, hydroxyl, and substituted or unsubstituted C1-C20 alkyl, C6-C30 aryl, C6-C30 heteroaryl, C7-C30 alkylaryl and C7-C30 arylalkyl; R1 and R2 may be identical to or different from each other, and are selected from hydrogen and substituted or unsubstituted C1-C30 hydrocarbyl, preferably from hydrogen and substituted or unsubstituted C1-C20 alkyl, C6-C30 aryl, C7-C30 alkylaryl and C7-C30 arylalkyl. According to the present invention, by using the compound as shown in Formula I as internal electron donor compound for propene polymerization, the catalyst has a higher activity, and a slow rate of delay of activity.Type: ApplicationFiled: April 24, 2015Publication date: February 16, 2017Applicants: China Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry China Petroleum & Chemical CorporationInventors: Jun WANG, Mingzhi GAO, Haitao LIU, Jing MA, Jianhua CHEN, Xiaoxia CAI, Jixing MA, Changxiu LI, Jianjun HU, Xiaofan ZHANG, Xianzhong LI, Zhihui ZHANG, Ruilin DUAN, Linna YANG, Changyou MA
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Publication number: 20160244538Abstract: The present disclosure discloses a catalyst composition for olefin polymerization, comprising the following components: a): a solid catalyst component containing magnesium, titanium, halogens, and at least one internal electron donor having a lone pair of electrons; b): an aluminum alkyl compound; and c): an external electron donor containing a first external electron donor C1, which is a malonate compound. In the present disclosure, a catalyst composition having an external electron donor that contains a malonate compound is used in olefin polymerization, in particular propene polymerization, and can significantly improve catalytic activity and hydrogen response of the catalyst and expand molecular weight distribution of polymers, which facilitates development of different polymers.Type: ApplicationFiled: September 28, 2014Publication date: August 25, 2016Inventors: Changxiu Liu, Mingzhi Gao, Haitao Liu, Jing Ma, Jianhua Chen, Xianzhong Li, Xiaoxia Cai, Jixing Ma, Jun Wang, Jianjun Hu
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Patent number: 9156927Abstract: A catalyst component for olefin polymerization comprising magnesium, titanium, halogen and electron donor, wherein the electron donor is selected from at least one of the diol diester compounds, when the diol diester comprised contains a certain amount of isomer with Fischer projection formula as shown in Formula (II), the activity and stereospecificity of the catalyst are greatly improved, especially in the production of polymers with high melt index, the isotactic index of the obtained polymers is improved substantially.Type: GrantFiled: April 22, 2011Date of Patent: October 13, 2015Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATIONInventors: Mingzhi Gao, Changxiu Li, Haitao Liu, Xiaofan Zhang, Jianhua Chen, Jing Ma, Xiaoxia Cai, Xianzhong Li, Jixing Ma
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Patent number: 8889619Abstract: Provided are a fusion protein of Exendin-4 and its analog, the preparation method and use thereof. The fusion protein is obtained by fusing of Exendin-4 or its analog to Fc region of human IgG2 via a linking peptide, which has the better stability and prolonged serum half-life, and can be used for treating diabetes and obesity.Type: GrantFiled: June 10, 2011Date of Patent: November 18, 2014Assignee: Beijing Dongfang Biotech Co., Ltd.Inventors: Xianhong Bai, Hua Tu, Xianzhong Li
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Patent number: 8743970Abstract: A system and method of decoding input video information is disclosed which includes performing error detection for each video block of a frame, determining whether a scene change occurs for the frame, and when an error is detected in a video block, performing spatial concealment by concealing error of the erroneous video block using neighboring video information within the frame when the erroneous video block is intraframe encoded or when a scene change is detected for the frame, or performing temporal concealment by replacing the erroneous video block with a reference video block from a reference frame when the erroneous video block is interframe encoded and when a scene change is not detected for the frame. The method may further include detecting false frames based on comparing current and new frame number and picture order count values of a new slice.Type: GrantFiled: April 13, 2009Date of Patent: June 3, 2014Assignee: Freescale Semiconductor, Inc.Inventors: Zhongli He, Xianzhong Li
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Publication number: 20130225773Abstract: A catalyst component for olefin polymerization which contains magnesium, titanium, halogen and electron donors is provided in the present invention. The electron donors are selected from at least one succinate compounds of following general formula (I), and the content of said succinate compounds with the structure as shown in Formula (II) in said succinate compounds (I) is less than 100%, but not less than 51.0 wt %. Compared with the mesomer whose content with the structure as shown in Formula (II) is 100%, the catalyst component provided by the present invention not only greatly decreases the manufacturing cost, but also improves certain properties of the catalyst, for example the molecular weight distribution of polymer obtained by catalytic reaction using said catalyst is wider, which is beneficial for improving processing properties of polymers. The corresponding catalyst is also provided.Type: ApplicationFiled: August 12, 2011Publication date: August 29, 2013Applicants: Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation, China Petroleum & Chemical CorporationInventors: Mingzhi Gao, Changxiu Li, Haitao Liu, Xianzhong Li, Xiaofan Zhang, Xiaoxia Cai, Jianhua Chen, Jing Ma, Jixing Ma
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Publication number: 20130142795Abstract: Provided are a fusion protein of Exendin-4 and its analog, the preparation method and use thereof. The fusion protein is obtained by fusing of Exendin-4 or its analog to Fc region of human IgG2 via a linking peptide, which has the better stability and prolonged serum half-life, and can be used for treating diabetes and obesity.Type: ApplicationFiled: June 10, 2011Publication date: June 6, 2013Applicant: Beijing Dongfang Biotech Co., Ltd.Inventors: Xianhong Bai, Hua Tu, Xianzhong Li
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Publication number: 20130041120Abstract: A catalyst component for olefin polymerization comprising magnesium, titanium, halogen and electron donor, wherein the electron donor is selected from at least one of the diol diester compounds, when the diol diester comprised contains a certain amount of isomer with Fischer projection formula as shown in Formula (II), the activity and stereospecificity of the catalyst are greatly improved, especially in the production of polymers with high melt index, the isotactic index of the obtained polymers is improved substantially.Type: ApplicationFiled: April 22, 2011Publication date: February 14, 2013Applicant: China Petroleum & Chemical CorporationInventors: Mingzhi Gao, Changxiu Li, Haitao Liu, Xiaofan Zhang, Jianhua Chen, Jing Ma, Xiaoxia Cai, Xianzhong Li, Jixing Ma
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Publication number: 20110116539Abstract: A method of reducing processing of fast inverse transform of an input transform block by a video decoder includes determining whether a block type is one of zero, DC, left, and top. If not, the inverse transform is performed and a residual video block is provided as residual information. When the block type is zero, inverse transform is bypassed. When the block type is DC, reduced complexity inverse transform of a DC coefficient is performing and a single residual coefficient is provided as residual information. When the block type is left, reduced complexity inverse transform of a left column of the input transform block is performed and a single column of residual coefficients is provided as residual information. When the block type is top, reduced complexity inverse transform of a top row is performed and a single row of residual coefficients is provided as residual information.Type: ApplicationFiled: November 13, 2009Publication date: May 19, 2011Applicant: Freescale Semiconductor, Inc.Inventors: Zhongli He, Xianzhong Li, Peng Zhou
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Publication number: 20100260269Abstract: A system and method of decoding input video information is disclosed which includes performing error detection for each video block of a frame, determining whether a scene change occurs for the frame, and when an error is detected in a video block, performing spatial concealment by concealing error of the erroneous video block using neighboring video information within the frame when the erroneous video block is intraframe encoded or when a scene change is detected for the frame, or performing temporal concealment by replacing the erroneous video block with a reference video block from a reference frame when the erroneous video block is interframe encoded and when a scene change is not detected for the frame. The method may further include detecting false frames based on comparing current and new frame number and picture order count values of a new slice.Type: ApplicationFiled: April 13, 2009Publication date: October 14, 2010Applicant: FREESCALE SEMICONDUCTOR, INC.Inventors: Zhongli He, Xianzhong Li
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Patent number: 7351778Abstract: The present invention provides a catalyst component for polymerization of olefin CH2?CHR, in which R is hydrogen or C1-C12 alkyl or aryl, comprising magnesium, titanium, a halogen and an electron donor compound (a) which is at least one selected from the group consisting of dibasic ester compounds of the formula (I), and said catalyst component optionally further comprising an electron donor compound (b) selected from the group consisting of aliphatic dicarboxylic esters and aromatic dicarboxylic esters, and/or an electron donor compound (c) selected from the group consisting of 1,3-diether compounds of formula (IV): wherein, R1, R? and A are as defined in the description, wherein RI-RVIII are as defined in the description, and a catalyst comprising the catalyst component.Type: GrantFiled: April 28, 2005Date of Patent: April 1, 2008Assignees: China Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry China Petroleum & Chemical CorporationInventors: Mingzhi Gao, Haitao Liu, Tianyi Li, Xianzhong Li, Changxiu Li, Jiyu Li, Lingyan Xing, Juxiu Yang, Jing Ma, Xiaodong Wang, Chunmin Ding
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Publication number: 20060287446Abstract: The present invention provides a catalyst component for polymerization of olefin CH2=CHR, in which R is hydrogen or C1-C12 alkyl or aryl, comprising magnesium, titanium, a halogen and an electron donor compound (a) which is at least one selected from the group consisting of dibasic ester compounds of the formula (I), and said catalyst component optionally further comprising an electron donor compound (b) selected from the group consisting of aliphatic dicarboxylic esters and aromatic dicarboxylic esters, and/or an electron donor compound (c) selected from the group consisting of 1,3-diether compounds of formula (IV): wherein, R1, R? and A are as defined in the description, wherein RI-RVIII are as defined in the description, and a catalyst comprising the catalyst component.Type: ApplicationFiled: April 28, 2005Publication date: December 21, 2006Inventors: Mingzhi Gao, Haitao Liu, Tianyi Li, Xianzhong Li, Changxiu Li, Jiyu Li, Lingyan Xing, Juxiu Yang, Jing Ma, Xiaodong Wang, Chunmin Ding
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Publication number: 20050096389Abstract: The present application relates to polyol ester compounds, having general formula (I): R1CO—O—CR3R4-A-CR5R6—O—CO—R2 (I) wherein, R, and R2 groups, which may be identical or different, can be substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms, R3-R6 groups, which may be identical or different, can be selected from the group consisting of hydrogen, halogen or substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms, R1-R6 groups optionally contain one or more hetero-atoms replacing carbon, hydrogen atom or the both, said hetero-atom is selected from the group consisting of nitrogen, oxygen, sulfur, silicon, phosphorus and halogen atom, two or more of R3-R6 groups can be linked to form saturated or unsaturated monocyclic or polycyclic ring; A is a single bond or bivalent linking group with chain length between two free radicals being 1-10 atoms, wherein said bivalent linking group is selected from the group consisting of aliphatic, alicyclic and aromatic bivalent radicals, and can cType: ApplicationFiled: January 30, 2003Publication date: May 5, 2005Applicant: CHINA PETROLEUM & CHEMICALInventors: Mingzhi Gao, Jun Wang, Changxiu Li, Jiyu Li, Tianyi Li, Xianzhong Li, Jing Ma, Lingyan Xing, Haitao Liu