Patents by Inventor Xiaofan Zhang
Xiaofan 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).
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Patent number: 11840508Abstract: A catalyst system for olefin polymerization contains a main catalyst and a cocatalyst. The cocatalyst contains a twelve-membered ring compound represented by formula (M). The catalyst system is suitable for preparing polypropylene products having high stereoregularity and low ash, and can regulate the melt index of the products within a wide range by adjusting the amount of hydrogenation. It is also suitable for copolymerization systems to improve the copolymerization yield.Type: GrantFiled: July 24, 2020Date of Patent: December 12, 2023Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATIONInventors: Jie Lin, Xiaofan Zhang, Ting Huang, Junhui Zhang, Junling Zhou, Zhufang Sun, Xianzhi Xia, Hui Zhao, Zifang Guo, Jin Zhao, Haitao Liu, Meiyan Fu, Jigui Zhang, Lin Qi, Lian Yan, Wei Cen, Yu Wang
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Publication number: 20230391902Abstract: A magnesium-based solid, by means of determination based on a nitrogen adsorption method, has a multimodal pore distribution and a specific surface area of not less than 50 m2/g, and the pore size distribution of the solid is in a range of 1 nm to 300 nm. There is at least one peak within a pore size range of less than 10 nm, and there is at least another peak within a pore size range of not less than 10 nm. A catalyst is formed using the solid catalyst component is used for propylene polymerization.Type: ApplicationFiled: October 15, 2021Publication date: December 7, 2023Inventors: Wei CEN, Junling ZHOU, Meiyan FU, Lian YAN, Zhan SHI, Xiaofan ZHANG, Xianzhi XIA, Zhengyang GUO, Jigui ZHANG, Jie LIN, Lin QI, Tianyi ZHANG, Junhui ZHANG, Hui ZHAO, Yu WANG, Ying WANG
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Publication number: 20230384925Abstract: In one aspect of the present disclosure, a method of acquiring gesture data is provided. The method may include acquiring a gesture signal. The method may include acquiring a feature value corresponding to the gesture signal. The method may include acquiring a signal state corresponding to a feature point based on the feature value, adding the feature value and the signal state to a gesture signal set. The method may include acquiring all feature values and all signal states between a gesture start point and a gesture end point in the phase of acquiring the gesture data from the gesture signal set. The method may include generating signal change information based on the all feature values and the all signal states. The method may include identifying the signal change information as a signal data segment of a target gesture in response to the signal change information meeting signal verification information.Type: ApplicationFiled: August 9, 2023Publication date: November 30, 2023Inventors: Ming CHEN, Li ZENG, Xiaofan ZHANG, Weidong ZHONG
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Publication number: 20230002432Abstract: An amino-imine metal complex represented by Formula I, its preparation method and an application thereof are provided. The complex is used as a main catalyst in catalysts for olefin polymerization, and can catalyze the polymerization of ethylene at a relatively high temperature to prepare branched polyethylene having high molecular weight.Type: ApplicationFiled: October 30, 2020Publication date: January 5, 2023Inventors: Rong GAO, Jingjing LAI, Zifang GUO, Qingqiang GOU, Junling ZHOU, Xiaofan ZHANG, Dongbing LIU, Jie LIN, Xinyang LI, Junhui ZHANG, Yuanning GU, Yan LI, Jingyan AN, Hui ZHAO
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Publication number: 20220396646Abstract: A method for preparing an olefin-olefinic alcohol copolymer and an olefin-olefinic alcohol copolymer prepared by the method are provided. The catalyst used in the method for preparing the olefin-olefinic alcohol copolymer has a diimine metal complex as shown in Formula I.Type: ApplicationFiled: October 30, 2020Publication date: December 15, 2022Inventors: Rong GAO, Jingjing LAI, Zifang GUO, Qingqiang GOU, Junling ZHOU, Wenbo SONG, Xinyang LI, Xiaofan ZHANG, Jie LIN, Dongbing LIU, Junhui ZHANG, Hongtao WANG, Shijun ZHANG, Yuanning GU, Jingyan AN, Hui ZHAO, Tingjie HUANG, Dong MA, Ruen WANG, Shiyuan XU, Jie FU
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Patent number: 11475500Abstract: A method, a device, and a non-transitory computer readable medium for item recommendation based on visual elements. The method includes: determining, by one or more processors, visual elements from an item image of an item; generating, by the one or more processors, an element descriptor for the item based on at least a part of the visual elements; and calculating, by the one or more processors, a compatibility value between the element descriptor and one or more other element descriptors for one or more other items.Type: GrantFiled: August 4, 2019Date of Patent: October 18, 2022Assignees: BEIJING JINGDONG SHANGKE INFORMATION TECHNOLOGY CO., LTD., JD.COM AMERICAN TECHNOLOGIES CORPORATIONInventors: Guanghan Ning, Xiaofan Zhang, Jui-Hsin Lai, Chi Zhang
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Publication number: 20220282005Abstract: A diimine metal complex represented by Formula I, a preparation method therefor, and application thereof are provided. The complex is used as a main catalyst in catalysts for olefin polymerization, and can achieve catalytic ethylene polymerization at a high temperature to prepare high molecular weight branched polyethylene.Type: ApplicationFiled: October 30, 2020Publication date: September 8, 2022Inventors: Rong GAO, Jingjing LAI, Zifang GUO, Qingqiang GOU, Junling ZHOU, Dongbing LIU, Xiaofan ZHANG, Jie LIN, Xinyang LI, Junhui ZHANG, Yuanning GU, Yan LI, Jingyan AN, Jie FU, Yanhong WAN
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Publication number: 20220251016Abstract: A catalyst system for olefin polymerization contains a main catalyst and a cocatalyst. The cocatalyst contains a twelve-membered ring compound represented by formula (M). The catalyst system is suitable for preparing polypropylene products having high stereoregularity and low ash, and can regulate the melt index of the products within a wide range by adjusting the amount of hydrogenation. It is also suitable for copolymerization systems to improve the copolymerization yield.Type: ApplicationFiled: July 24, 2020Publication date: August 11, 2022Inventors: Jie LIN, Xiaofan ZHANG, Ting HUANG, Junhui ZHANG, Junling ZHOU, Zhufang SUN, Xianzhi XIA, Hui ZHAO, Zifang GUO, Jin ZHAO, Haitao LIU, Meiyan FU, Jigui ZHANG, Lin QI, Lian YAN, Wei CEN, Yu WANG
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Patent number: 11401356Abstract: The present invention discloses a Ziegler-Natta catalyst system for olefin polymerization, comprising at least one compound represented by formula (I) as (i) an internal electron donor, (ii) an external electron donor, or (iii) the both, wherein M1, M2, M3, M4, M5, M6, M1?, M2?, M3?, M4?, M5? and M6? are each independently selected from the group consisting of hydrogen, hydroxy, amino, aldehyde group, carboxy, acyl, halogen atoms, —R1 and —OR2, wherein R1 and R2 are each independently a C1-C10 hydrocarbyl, which is unsubstituted or substituted by a substituent selected from the group consisting of hydroxy, amino, aldehyde group, carboxy, acyl, halogen atoms, C1-C10 alkoxy and heteroatoms; and wherein, when among M1-M6 and M1?-M6?, any two adjacent groups on the same phenyl ring are each independently selected from the group consisting of R1 and —OR2, the two adjacent groups may optionally be linked to form a ring, with a proviso that M1, M2, M3, M4, M5, M6, M1?, M2?, M3?, M4?, M5? and M6? are not simultaneousType: GrantFiled: July 19, 2018Date of Patent: August 2, 2022Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATIONInventors: Ting Huang, Zifang Guo, Zhufang Sun, Junling Zhou, Lunjia Xie, Hongxu Yang, Bingyi Li, Qingqiang Gou, Tingjie Huang, Peng Kou, Xiaofan Zhang, Meiyan Fu, Jie Lin, Yonghua Ma
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Method and apparatus for performing block retrieval on block to be processed of urine sediment image
Patent number: 11386340Abstract: The inventive concepts herein relate to performing block retrieval on a block to be processed of a urine sediment image. The method comprises: using a plurality of decision trees to perform block retrieval on the block to be processed, wherein each of the plurality of decision trees comprises a judgment node and a leaf node, and the judgment node judges the block to be processed to make it reach the leaf node by using a block retrieval feature in a block retrieval feature set to form a block retrieval result at the leaf node, and at least two decision trees in the plurality of decision trees are different in structures thereof and/or judgments performed by the judgment nodes thereof by using the block retrieval feature; and integrating the block retrieval results of the plurality of decision trees so as to form a final block retrieval result.Type: GrantFiled: August 7, 2020Date of Patent: July 12, 2022Assignee: SIEMENS HEALTHCARE DIAGNOSTIC INC.Inventors: Tian Shen, Juan Xu, XiaoFan Zhang -
Publication number: 20210035187Abstract: A method, a device, and a non-transitory computer readable medium for item recommendation based on visual elements. The method includes: determining, by one or more processors, visual elements from an item image of an item; generating, by the one or more processors, an element descriptor for the item based on at least a part of the visual elements; and calculating, by the one or more processors, a compatibility value between the element descriptor and one or more other element descriptors for one or more other items.Type: ApplicationFiled: August 4, 2019Publication date: February 4, 2021Inventors: Guanghan Ning, Xiaofan Zhang, Jui-Hsin Lai, Chi Zhang
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Method and apparatus for performing block retrieval on block to be processed of urine sediment image
Patent number: 10748069Abstract: The inventive concepts herein relate to performing block retrieval on a block to be processed of a urine sediment image. The method comprises: using a plurality of decision trees to perform block retrieval on the block to be processed, wherein each of the plurality of decision trees comprises a judgment node and a leaf node, and the judgment node judges the block to be processed to make it reach the leaf node by using a block retrieval feature in a block retrieval feature set to form a block retrieval result at the leaf node, and at least two decision trees in the plurality of decision trees are different in structures thereof and/or judgments performed by the judgment nodes thereof by using the block retrieval feature; and integrating the block retrieval results of the plurality of decision trees so as to form a final block retrieval result.Type: GrantFiled: April 30, 2015Date of Patent: August 18, 2020Assignee: Siemens Healthcare Diagnostics Inc.Inventors: Tian Shen, Juan Xu, XiaoFan Zhang -
Publication number: 20200181296Abstract: The present invention discloses a Ziegler-Natta catalyst system for olefin polymerization, comprising at least one compound represented by formula (I) as (i) an internal electron donor, (ii) an external electron donor, or (iii) the both, wherein M1, M2, M3, M4, M5, M6, M1?, M2?, M3?, M4?, M5? and M6? are each independently selected from the group consisting of hydrogen, hydroxy, amino, aldehyde group, carboxy, acyl, halogen atoms, —R1 and —OR2, wherein R1 and R2 are each independently a C1-C10 hydrocarbyl, which is unsubstituted or substituted by a substituent selected from the group consisting of hydroxy, amino, aldehyde group, carboxy, acyl, halogen atoms, C1-C10 alkoxy and heteroatoms; and wherein, when among M1-M6 and M1?-M6?, any two adjacent groups on the same phenyl ring are each independently selected from the group consisting of R1 and —OR2, the two adjacent groups may optionally be linked to form a ring, with a proviso that M1, M2, M3, M4, M5, M6, M1?, M2?, M3?, M4?, M5? and M6? are not simultaneousType: ApplicationFiled: July 19, 2018Publication date: June 11, 2020Inventors: Ting HUANG, Zifang GUO, Zhufang SUN, Junling ZHOU, Lunjia XIE, Hongxu YANG, Bingyi LI, Qingqiang GOU, Tingjie HUANG, Peng KOU, Xiaofan ZHANG, Meiyan FU, Jie LIN, Yonghua MA
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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: 9751960Abstract: The present disclosure provides a solid catalyst component for olefin polymerization, comprising magnesium, titanium, a halogen, and an electron donor, wherein the electron donor is at least one selected from the group consisting of diol diester compounds as shown in Formula (I). The catalyst according to the present disclosure has significantly improved polymerization activity, hydrogen response, and stereoselectivity. According to the present disclosure, when the catalyst system containing a diol diester compound as shown in Formula (I) of the present disclosure is used in olefin polymerization, the catalyst shows good comprehensive performance, including high catalytic activity. In particular, in the presence of highly concentrated hydrogen, the catalyst has an improved hydrogen response and/or isotacticity of the polymers obtained can be significantly improved.Type: GrantFiled: May 21, 2014Date of Patent: September 5, 2017Assignees: China Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry, China Petroleum & Chemical CorporationInventors: Changxiu Li, Mingzhi Gao, Haitao Liu, Jianhua Chen, Jing Ma, Jixing Ma, Xiaoxia Cai, Jun Wang, Xiaofan Zhang, Jianjun Hu
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Patent number: 9715729Abstract: Concepts herein relate to processing urine sediment images. An example method comprises: approximating the color of a pixel in a block to be processed to one of the kc colors in a code book, wherein the code book is a set of the kc colors generated in a set of urine sample blocks; obtaining a distribution histogram of the number of pixels the color approximation results of which fall on each color of the kc colors; using an occurrence frequency correction factor to correct the number of pixels the color approximation results; standardizing the corrected number of pixels the color approximation results; and processing the block to be processed.Type: GrantFiled: April 30, 2015Date of Patent: July 25, 2017Assignee: Siemens Healthcare Diagnostics Inc.Inventors: Tian Shen, Juan Xu, XiaoFan Zhang
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Patent number: 9700778Abstract: The present invention provides a golf swing practice method, wherein a swing plane for guiding swing of a club is established, and a member for monitoring the condition whether an included angle is formed between a club body of the club and the swing plane is established outside the swing plane, which are taken as a basis for judging whether a swing action is right or wrong. The present invention also provides a golf swing practice device, which comprises a bracket (1) and a swing guiding frame (2) arranged on the bracket (1), wherein the swing guiding frame (2) forms a certain included angle with the ground; a guiding plane (2-3) for supporting the club is arranged on the surface of the swing guiding frame (2), and concave-convex parts (2-4) or an inductive device (5) are/is arranged outside the guiding plane (2-3), so as to prompt a wrong swing action that an included angle is formed between the club body of the club and the guiding plane during swing to a practicer.Type: GrantFiled: December 28, 2015Date of Patent: July 11, 2017Inventor: Xiaofan Zhang
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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: 20170053400Abstract: Concepts herein relate to processing urine sediment images. An example method comprises: approximating the color of a pixel in a block to be processed to one of the kc colors in a code book, wherein the code book is a set of the kc colors generated in a set of urine sample blocks; obtaining a distribution histogram of the number of pixels the color approximation results of which fall on each color of the kc colors; using an occurrence frequency correction factor to correct the number of pixels the color approximation results; standardizing the corrected number of pixels the color approximation results; and processing the block to be processed.Type: ApplicationFiled: April 30, 2015Publication date: February 23, 2017Applicant: SIEMENS HEALTHCARE DIAGNOSTICS INC.Inventors: Tian SHEN, Juan XU, XiaoFan ZHANG