Patents by Inventor Hongfei Wu
Hongfei Wu 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: 11952355Abstract: Provided are a method of preparing a malononitrile oxime ether compound and an intermediate compound. The malononitrile oxime ether compound has a structure as shown in formula (VII), wherein W is selected from aryl or heteroaryl. The preparation method comprises: reacting a first raw material with a second raw material in the presence of a first solvent and a catalyst to obtain the intermediate compound, wherein the first raw material has a structure as shown in formula (IV), and the second raw material has a structure as shown in formula (V); and subjecting the intermediate compound, and a dehydrant to a dehydration reaction in the present of a second solvent to obtain the malononitrile oxime ether compound. Furthermore, the malononitrile oxime ether compound is obtained through one-step dehydration reaction. using the preparation method, is advantageous for improving the yield of malononitrile oxime ethers and reducing the cost.Type: GrantFiled: June 17, 2019Date of Patent: April 9, 2024Assignee: Shenyang Sinochem Agrochemicals R&D Co., Ltd.Inventors: Hongfei Wu, Xueming Cheng, Libao Xu, Chunxiao Guo, Jingbo Xu, Ningning Sun, Haibo Yu
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Patent number: 11891371Abstract: The present invention belongs to the fields of insecticides, acaricides and fungicides, and particularly relates to a piperonylic acid derivative, and preparation and application thereof. The structure is shown in a general formula I, and the definition of each substituent in the formula is described in the description. The compound of the general formula I exhibits excellent insecticidal, acaricidal and fungicidal activity and can be used for controlling various harmful insects, mites or fungus.Type: GrantFiled: June 22, 2018Date of Patent: February 6, 2024Assignees: SHENYANG SINOCHEM AGROCHEMICALS R&D CO., LTD, JIANGSU YANGNONG CHEMICAL CO., LTD.Inventors: Hongfei Wu, Jingbo Xu, Shaowu Liu, Haibo Yu, Xiuhui Chang, Qin Sun, Libao Xu, Xueming Cheng, Hao Yang, Ningning Sun
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Patent number: 11826743Abstract: A halogen-containing compound represented by a formula I and a use thereof as a ligand of an ethylene oligomerization catalyst composition, an ethylene oligomerization catalyst composition comprising the halogen-containing compound, and an ethylene oligomerization method, ethylene trimerization method and ethylene tetramerization method using the catalyst composition are provided. Serving as the ligand of the ethylene oligomerization catalyst, the halogen-containing polymer may effectively improve the catalytic performance of a catalyst system, especially by displaying a significantly improved catalytic performance in an ethylene oligomerization reaction. The maximum catalyst activity may exceed 4×108 g·mol(Cr)?1·h?1, and the total selectivity of 1-hexene and 1-octene exceeds 92 wt %. In a C6 product, the content of 1-hexene may reach about 97%, and in a C8 product, the content of 1-octene may reach more than 98%.Type: GrantFiled: October 30, 2019Date of Patent: November 28, 2023Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATIONInventors: Hongfei Wu, Mingfang Zheng, Songshuang Hu, Tonglin Li, Jun Liu, Ke Xu, Xiaoqing Wang, Feng Pan
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Patent number: 11799849Abstract: A platform for delivering secure web applications to a client browser. A software plug-in is provided configured for integration into a web browser. The plug-in includes: a request hook that intercepts web browser requests associated with a secure web application; a request processing system that redirects an request to access the secure web application to a network service, and then redirects subsequent HTTP requests to interact with the secure web application to the network service; and a package manager that receives a text-based data package from a customer domain server in response to the initial request and renders the secure web application in the web browser, and receives an updated text-based data package from the customer domain server in response to the subsequent HTTP request and renders updates to secure web application in the web browser.Type: GrantFiled: December 30, 2021Date of Patent: October 24, 2023Inventors: Zhen Zeng, Hongfei Wu
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Patent number: 11799850Abstract: A network service, program product and method that manages secure web application delivery. A service is disclosed that includes an interface configured to receive a request for a secure web application from a plug-in integrated into a web browser on a client computing device, wherein the request further includes a user credential token. Also included is a token processor that evaluates the user credential token and determines an associated customer domain server provided by a back-end service and a transport service that establishes a secure channel with the customer domain server, and forwards the request to the associated customer domain server and receives back a text-based data package. Once generated, the text-based data package is forwarded to the plug-in in response to the request.Type: GrantFiled: December 30, 2021Date of Patent: October 24, 2023Inventors: Zhen Zeng, Hongfei Wu
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Publication number: 20230271919Abstract: The present invention belongs to the field of agricultural acaricides, and particularly relates to a substituted phenyl sulfide compound and an application thereof. The substituted phenyl sulfide compound is as represented in general formula I. Definitions of substituted groups in the formula are given in the description. The compound of the general formula I has excellent acaricidal activity and can be used for preventing and controlling various mites.Type: ApplicationFiled: July 13, 2021Publication date: August 31, 2023Inventors: Libao XU, Hongfei WU, Xiuhui CHANG, Haibo YU, Yuquan SONG, Jingbo XU, Chunxiao GUO, Xueming CHENG, Ningning SUN
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Publication number: 20220400678Abstract: The present invention discloses an oxime ether compound with novel structure. The structure is shown in general formula I. The definition of each substituent in the formula is provided in the description. The compound of general formula I has excellent microbicidal 1 activity, and has good control effects on plant bacterial diseases and fungal diseases. The present invention comprises an application of the compound of the general formula I as a microbicide in agriculture and other fields.Type: ApplicationFiled: November 2, 2020Publication date: December 22, 2022Inventors: Xueming CHENG, Haibo YU, Liang CHEN, Hongfei WU, Geng SUN, Chunxiao GUO, Libao XU, Jingbo XU, Ningning SUN
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Publication number: 20220372578Abstract: Provided is an application of a miRNA fingerprint in the diagnosis and treatment of human bladder and urothelial carcinoma (comprising bladder cancer, renal pelvic carcinoma, ureter cancer, urinary outflow tract cancer, and the like). A plurality of fingerprints consisting of miRNAs can effectively distinguish a urine sample of bladder and urothelial carcinoma from a urine sample of non-bladder and urothelial carcinoma, and has high sensitivity and strong specificity. The fingerprints can be effectively used for the detection and the early diagnosis and screening of bladder and urothelial carcinoma and the screening of drugs for bladder and urothelial carcinoma.Type: ApplicationFiled: August 18, 2020Publication date: November 24, 2022Inventors: Ruoying TAN, Hongfei WU, Fengwu ZHANG, Hailong WANG
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Publication number: 20220202011Abstract: The present invention belongs to the fields of insecticides and acaricides, and particularly relates to a piperonylic acid derivative and application thereof. The structure is shown in a general formula I, and the definition of each substituent in the formula is described in the description. The compound of the general formula I has excellent insecticidal and acaricidal activity and can be used for controlling various pests and mites.Type: ApplicationFiled: March 4, 2022Publication date: June 30, 2022Inventors: Hongfei WU, Jingbo XU, Shaowu LIU, Haibo YU, Lanfeng BAN, Libao XU, Xueming CHENG, Chunxiao GUO, Ningning SUN
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Patent number: 11320981Abstract: Described embodiments provide systems and methods for controlling loading of web content with scrolling. A scroll manager of a web browser may determine a ratio of a first dimension of a portion of a webpage visible within a viewport of the web browser to a second dimension of an entirety of the webpage. Prior or to loading any other portion of the webpage, the scroll manager may set a scroll thumb dimension within a scroll bar of the web browser based on the ratio. The scroll manager may receive an interaction on the scroll bar of the web browser to arrive at a position within the webpage relative to the second dimension to be displayed within the viewport. Responsive to the interaction, the scroll manager may select a requested portion of the webpage corresponding to the first dimension about the position to render in the viewport.Type: GrantFiled: January 16, 2018Date of Patent: May 3, 2022Assignee: Citrix Systems, IncInventors: Hongfei Wu, Yuanyuan Zhang
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Publication number: 20220124088Abstract: A network service, program product and method that manages secure web application delivery. A service is disclosed that includes an interface configured to receive a request for a secure web application from a plug-in integrated into a web browser on a client computing device, wherein the request further includes a user credential token. Also included is a token processor that evaluates the user credential token and determines an associated customer domain server provided by a back-end service and a transport service that establishes a secure channel with the customer domain server, and forwards the request to the associated customer domain server and receives back a text-based data package. Once generated, the text-based data package is forwarded to the plug-in in response to the request.Type: ApplicationFiled: December 30, 2021Publication date: April 21, 2022Inventors: Zhen Zeng, Hongfei Wu
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Publication number: 20220124087Abstract: A platform for delivering secure web applications to a client browser. A software plug-in is provided configured for integration into a web browser. The plug-in includes: a request hook that intercepts web browser requests associated with a secure web application; a request processing system that redirects an request to access the secure web application to a network service, and then redirects subsequent HTTP requests to interact with the secure web application to the network service; and a package manager that receives a text-based data package from a customer domain server in response to the initial request and renders the secure web application in the web browser, and receives an updated text-based data package from the customer domain server in response to the subsequent HTTP request and renders updates to secure web application in the web browser.Type: ApplicationFiled: December 30, 2021Publication date: April 21, 2022Inventors: Zhen Zeng, Hongfei Wu
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Patent number: 11306040Abstract: A halogen-containing compound as shown in a formula I can be used as a ligand for an ethylene oligomerization catalyst composition. The ethylene oligomerization catalyst composition containing the halogen-containing compound can be used to catalyze ethylene oligomerization, trimerization and tetramerization reactions. As a ligand of a catalyst for ethylene oligomerization, a fluoropolymer can effectively improve the catalytic performance of a catalyst system, and particularly exhibits improved activity and selectivity in an ethylene oligomerization reaction.Type: GrantFiled: October 30, 2019Date of Patent: April 19, 2022Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATIONInventors: Hongfei Wu, Mingfang Zheng, Songshuang Hu, Tonglin Li, Jun Liu, Ke Xu, Xiaoqing Wang, Feng Pan
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Patent number: 11283260Abstract: A method and a system for controlling a distributed power generation system are disclosed. The distributed power generation system includes N sub isolated three-port converters and N independent distributed DC power sources in a one-to-one correspondence to the N sub isolated three-port converters, N is a natural number greater than 1; an input-port of each of the sub isolated three-port converters is connected to the corresponding distributed DC power source, bidirectional-ports of the sub isolated three-port converters are connected in parallel to build a low voltage DC bus, and output-ports of the sub isolated three-port converters are connected in series and connected to a medium voltage DC distribution network.Type: GrantFiled: November 29, 2017Date of Patent: March 22, 2022Assignee: Tsinghua UniversityInventors: Kai Sun, Yangjun Lu, Hongfei Wu
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Publication number: 20220072523Abstract: A halogen-containing compound represented by a formula I and a use thereof as a ligand of an ethylene oligomerization catalyst composition, an ethylene oligomerization catalyst composition comprising the halogen-containing compound, and an ethylene oligomerization method, ethylene trimerization method and ethylene tetramerization method using the catalyst composition. Serving as the ligand of the ethylene oligomerization catalyst, the halogen-containing polymer may effectively improve the catalytic performance of a catalyst system, especially by displaying a significantly improved catalytic performance in an ethylene oligomerization reaction. The maximum catalyst activity may exceed 4×108 g·mol(Cr)?1·h?1, and the total selectivity of 1-hexene and 1-octene exceeds 92 wt %. In a C6 product, the content of 1-hexene may reach about 97%, and in a C8 product, the content of 1-octene may reach more than 98%. The present catalyst composition has good industrial application prospects and economic value.Type: ApplicationFiled: October 30, 2019Publication date: March 10, 2022Inventors: Hongfei WU, Mingfang ZHENG, Songshuang HU, Tonglin LI, Jun LIU, Ke XU, Xiaoqing WANG, Feng PAN
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Publication number: 20220064080Abstract: A halogen-containing compound as shown in a formula I can be used as a ligand for an ethylene oligomerization catalyst composition. The ethylene oligomerization catalyst composition containing the halogen-containing compound can be used to catalyze ethylene oligomerization, trimerization, and tetramerization reactions. As a ligand of a catalyst for ethylene oligomerization, a fluoropolymer can effectively improve the catalytic performance of a catalyst system, and particularly exhibits improved activity and selectivity in an ethylene oligomerization reaction.Type: ApplicationFiled: October 30, 2019Publication date: March 3, 2022Inventors: Hongfei WU, Mingfang ZHENG, Songshuang HU, Tonglin LI, Jun LIU, Ke XU, Xiaoqing WANG, Feng PAN
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Publication number: 20220055996Abstract: Provided are a method of preparing a malononitrile oxime ether compound and an intermediate compound. The malononitrile oxime ether compound has a structure as shown in formula (VII), wherein W is selected from aryl or heteroaryl. The preparation method comprises steps: reacting a first raw material with a second raw material in the presence of a first solvent and a catalyst to obtain the intermediate compound, wherein the first raw material has a structure as shown in formula (IV), and the second raw material has a structure as shown in formula (V); and subjecting the intermediate compound as shown in formula (VI), and, a dehyclrant to a dehydrantion reaction in the presence of a second solvent to obtain the malononitrile oxime ether compound. In the preparation process for the intermediate, a cheaper cyanoacetamide is used as a raw material, the reaction conditions are mild. Moreover, the yield of the intermediate compound is high and the cost of the process is low.Type: ApplicationFiled: June 17, 2019Publication date: February 24, 2022Inventors: Hongfei WU, Xueming CHENG, Libao XU, Chunxiao GUO, Jingbo XU, Ningning SUN, Haibo YU
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Patent number: 11252148Abstract: A network service, program product and method that manages secure web application delivery. A service is disclosed that includes an interface configured to receive a request for a secure web application from a plug-in integrated into a web browser on a client computing device, wherein the request further includes a user credential token. Also included is a token processor that evaluates the user credential token and determines an associated customer domain server provided by a back-end service and a transport service that establishes a secure channel with the customer domain server, and forwards the request to the associated customer domain server and receives back a text-based data package. Once generated, the text-based data package is forwarded to the plug-in in response to the request.Type: GrantFiled: June 7, 2019Date of Patent: February 15, 2022Assignee: CITRIX SYSTEMS, INC.Inventors: Zhen Zeng, Hongfei Wu
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Patent number: 11252147Abstract: A platform for delivering secure web applications to a client browser. A software plug-in is provided configured for integration into a web browser. The plug-in includes: a request hook that intercepts web browser requests associated with a secure web application; a request processing system that redirects an request to access the secure web application to a network service, and then redirects subsequent HTTP requests to interact with the secure web application to the network service; and a package manager that receives a text-based data package from a customer domain server in response to the initial request and renders the secure web application in the web browser, and receives an updated text-based data package from the customer domain server in response to the subsequent HTTP request and renders updates to secure web application in the web browser.Type: GrantFiled: June 7, 2019Date of Patent: February 15, 2022Assignee: CITRIX SYSTEMS, INC.Inventors: Zhen Zeng, Hongfei Wu
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Publication number: 20210380530Abstract: A preparation method of a sulfur-containing biphenylsulfur-containing biphenyl compound shown by the general formula (I) has a reaction formula as follows: Each substituent in the formula is defined in the description. In the method, halogeno benzene shown by the general formula (II) generates a coupling reaction in a catalytic system composed of a nickel compound and at least one ligand under the combined action of metallic zinc to obtain the sulfur-containing biphenyl compound shown by the general formula (I).Type: ApplicationFiled: October 8, 2019Publication date: December 9, 2021Inventors: Haibo YU, Hao YANG, Guimin ZHAO, Zhongbao REN, Hongfei WU, Xueling WANG, Zeyong ZHANG