Patents by Inventor Yanjun ZHOU
Yanjun ZHOU 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: 11969717Abstract: The present disclosure provides a method for preparing an organophosphorus degrading enzyme based multifunctional catalyst and an organophosphorus degrading enzyme based multifunctional catalyst and use thereof. In the present disclosure, the preparation method includes: directly adding a composite yolk-shell-structured nanomaterial into a crude enzyme solution of organophosphorus degrading enzyme with an affinity tag, and mixing, to obtain a mixture, and then subjecting the mixture to a separation, to obtain an organophosphorus degrading enzyme based multifunctional catalyst.Type: GrantFiled: May 11, 2021Date of Patent: April 30, 2024Assignee: Hebei University of TechnologyInventors: Yanjun Jiang, Liya Zhou, Saiguang Xue, Jing Gao
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Patent number: 11968983Abstract: The present disclosure discloses a tobacco leaf foliar spraying substance for reducing harmful ingredients in cheroot, a method for reducing carcinogenic components in flue-cured tobacco leaves and flue-cured tobacco shreds. The tobacco leaf foliar spraying substance contains a lotus leaf extract, the harmful chemical ingredients comprise N-nitrosonornicotine, 4-(N-methyl-nitrosamine)-1-(3-pyridinyl)-1-butanone, N-nitrosoanabasine and N-nitrosoanatabine. Foliar spraying is performed on a fertile field by using the lotus leaf extract before tobacco leaves are harvested and modulated, which not only significantly promotesagronomic characters and economic traits of tobacco and alleviates tobacco leaf browning but also effectively reduces harmful chemical ingredients unique to tobacco leaves, such as nitrosamine and nicotine.Type: GrantFiled: June 17, 2023Date of Patent: April 30, 2024Assignee: HUBEI INSTITUTE OF TOBACCO SCIENCEInventors: Chunlei Yang, Jinpeng Yang, Jun Zhou, Mei Yang, Yong Yang, Jun Yu, Zongping Li, Xiongfei Rao, Guangjiong Qin, Baoming Qiao, Ruoshi Bai, Yanjun Ma, Xianbao Deng, Wenzhang Qin, Kaixiao Fan, Candong Deng, Yongle Wei, Youlun Fan
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Patent number: 11946334Abstract: A flow splitting device for gas reverse circulation drilling, including: an upper joint for connecting with a double-wall drill pipe; an inner tube which is arranged in the upper joint and defines a first passageway in communication with an inner chamber of the double-wall drill pipe, a second passageway in communication with an annular space in the double-wall drill pipe formed between the inner tube and the upper joint; a lower joint, having an upper end fixedly connected with the upper joint and a lower end for connecting with a drill tool; and a flow guiding member provided between the upper joint and the lower joint. A flexible sealing mechanism is provided outside the upper joint. The flexible sealing mechanism extends radially outward relative to the upper joint and the lower joint to form a sealing contact with a wellbore wall.Type: GrantFiled: September 30, 2020Date of Patent: April 2, 2024Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SINOPEC PETROLEUM ENGINEERING TECHNOLOGY SERVICE CO., LTD, SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD, DRILLING TECHNOLOGY RESEARCH INSTITUTE OF SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTDInventors: Chuanwei Zhao, Zhonghua Wu, Yanjun Zhou, Honglin Tang, Zhihe Liu, Xueliang Pei, Haoyu Sun, Zhenguo Su, Bo Kang, Hui Zhang, Huangang Zhu, Yongming Chen, Zhongshuai Chen
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Publication number: 20240098555Abstract: This disclosure describes systems, devices, apparatus, and methods, including computer programs encoded on storage media, for controlling a network with one or more access points (APs). A controller may be configured to schedule at least some resources of the one or more APs to improve network efficiency. The APs may measure and report a variety of information and statistics to the controller. The controller may determine one or more transmission parameters and one or more operations a given AP is permitted to perform during a respective time interval. The controller may communicate the one or more transmission parameters using an indication, such as a message. At least one AP associated with the controller may communicate with stations (STAs) using the one or more transmission parameters.Type: ApplicationFiled: September 21, 2023Publication date: March 21, 2024Inventors: Simone Merlin, Yanjun Sun, Hemanth Sampath, Bibhu Mohanty, Brian Michael Buesker, Yuan Zhou, Eric Vanbuhler, Danyang Cong, Raamkumar Balamurthi, Harshit Joshi, Vamsi Vegunta, Danny Jen, Nitin Ravinder
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Publication number: 20240088642Abstract: A circuit interrupter including a current sensor having a normal sensor output and an over current detection output, a solid state switch module structured to have a closed state to allow current to flow through the circuit interrupter and an open state to interrupt current flowing through the circuit interrupter, a gate driver structured to control the solid state switch module including a desaturation function output, wherein the gate driver is structured to cause the solid state switch module to interrupt current flowing through the circuit interrupter when the DESAT function output changes to the on state, and an electronic trip circuit structured to output a trip signal to the gate driver when the normal sensor output reaches a first threshold level or the overcurrent detection output changes to the on state.Type: ApplicationFiled: November 15, 2023Publication date: March 14, 2024Applicant: EATON INTELLIGENT POWER LIMITEDInventors: XIN ZHOU, Brian E. Carlson, Yanjun Feng, Jianyang Liu, Michael Stepian, Andrew L. Gottschalk, Santhosh Kumar Chamarajanagar Govinda Nayaka
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Patent number: 11929871Abstract: The present disclosure provides a method for generating a backbone network, an apparatus for generating a backbone network, a device, and a storage medium. The method includes: acquiring a set of a training image, a set of an inference image, and a set of an initial backbone network; training and inferring, for each initial backbone network in the set of the initial backbone network, the initial backbone network by using the set of the training image and the set of the inference image, to obtain an inference time and an inference accuracy of a trained backbone network in an inference process; determining a basic backbone network based on the inference time and the inference accuracy of the trained backbone network in the inference process; and obtaining a target backbone network based on the basic backbone network and a preset target network.Type: GrantFiled: April 11, 2022Date of Patent: March 12, 2024Inventors: Cheng Cui, Tingquan Gao, Shengyu Wei, Yuning Du, Ruoyu Guo, Bin Lu, Ying Zhou, Xueying Lyu, Qiwen Liu, Xiaoguang Hu, Dianhai Yu, Yanjun Ma
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Publication number: 20230147453Abstract: A flow splitting device for gas reverse circulation drilling, including: an upper joint for connecting with a double-wall drill pipe; an inner tube which is arranged in the upper joint and defines a first passageway in communication with an inner chamber of the double-wall drill pipe, a second passageway in communication with an annular space in the double-wall drill pipe formed between the inner tube and the upper joint; a lower joint, having an upper end fixedly connected with the upper joint and a lower end for connecting with a drill tool; and a flow guiding member provided between the upper joint and the lower joint. A flexible sealing mechanism is provided outside the upper joint. The flexible sealing mechanism extends radially outward relative to the upper joint and the lower joint to form a sealing contact with a wellbore wall.Type: ApplicationFiled: September 30, 2020Publication date: May 11, 2023Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, SINOPEC PETROLEUM ENGINEERING TECHNOLOGY SERVICE CO., LTD, SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD, DRILLING TECHNOLOGY RESEARCH INSTITUTE OF SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTDInventors: Chuanwei ZHAO, Zhonghua WU, Yanjun ZHOU, Honglin TANG, Zhihe LIU, Xueliang PEI, Haoyu SUN, Zhenguo SU, Bo KANG, Hui ZHANG, Huangang ZHU, Yongming CHEN, Zhongshuai CHEN
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Publication number: 20230130852Abstract: A method is provided for removing silver mirroring from the surface of a black-and-white negative film by: mixing 80-100 parts by mass of triethanolamine, 0-10 parts by mass of glycerol and 0-10 parts by mass of a surfactant uniformly under stirring to produce a silver mirroring remover, where the surfactant is one or more of isomeric tridecanol polyoxyethylene (8) ether, polyethylene glycol 200, polyethylene glycol 400 or alkylphenol polyoxyethylene (10) ether; applying the silver mirroring remover onto the region of the surface of the negative film, where the silver mirroring occurs, allowing the film to stand for at least 30 minutes, and then blotting up the residual solution on the negative film; and soaking the negative film in n-butanol and cleaning it, and then blotting the residual solvent on the negative film, followed by air drying, to complete the removal of silver mirroring on the surface of the negative film.Type: ApplicationFiled: October 25, 2022Publication date: April 27, 2023Inventors: Yuhu LI, Jianxu LUO, Zhihui JIA, Sudai MAER, Yanjun ZHOU
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Publication number: 20190340503Abstract: Various methods and systems for providing query result titles using a problem-solution search engine in a search system are provided. A query is received; the query is identified as a free-text query. Problem description features are identified from the free-text query. The problem description features characterize an issue described in the free-text query. Solution description features associated with product titles are accessed, where solution description features characterize a resolved issue described in a product review. A product associated with the product review is the product that resolved the resolved issue in the product review. The problem description features are compared to the solution description features. A product title is identified as a query result title. The product title is selected based on solution description features of the product title corresponding to the problem description features of the free-text query. The query result title is communicated.Type: ApplicationFiled: May 7, 2018Publication date: November 7, 2019Inventors: Han Cheng, Manojkumar Rangasamy Kannadasan, Wenwan Yang, Yanjun Zhou
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Patent number: 10253568Abstract: A push-the-bit rotary guiding device includes a mandrel having a central passage, a sleeve rotatably sleeved outside the mandrel, a plurality of swing ribs circumferentially arranged in an outer wall of the sleeve with an interval, an actuation mechanism for controlling each swing rib to swing respectively, a plurality of detectors for detecting a distance to a well wall in real-time, and a controller for determining whether the actuation mechanism is required to actuate the swing ribs to swing according to the detected distance. Through a real-time detection of the detectors of the push-the-bit rotary guiding device, a well section having an expanded or reduced diameter is detected in time and guiding of the rotary guiding device herein is avoided. The rotary guiding device has advantages of a simple and compact structure, convenient machining, easy assembling, and a safe and highly-efficient operation, and is easy to be popularized and applied.Type: GrantFiled: September 16, 2015Date of Patent: April 9, 2019Assignee: SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD. DRILLING TECHNOLOGY RESEARCH INSTITUTEInventors: Hongbing Xiao, Jinzhou Yang, Laiju Han, Zuohui Li, Haihua Zhang, Zhijun Tang, Yanjun Zhou
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Publication number: 20180223599Abstract: A static push-the-bit rotary guiding device includes: a mandrel having a central passage, wherein a circumferential groove is provided on an outer wall of the mandrel; a sleeve, which is sleeved in the circumferential groove and able to rotate independently; and a clutch, for cutting off or transferring a power from the mandrel to the sleeve. When it is unnecessary for the static push-the-bit rotary guiding device to provide a deviating force in a steady inclined section, a vertical section and a horizontal section, a rotational inertia and an interior energy storage of the rotary guiding device are not decreased, which is beneficial to highly-efficient and stable drilling of a downstream drill bit.Type: ApplicationFiled: September 16, 2015Publication date: August 9, 2018Inventors: Jinzhou Yang, Hongbing Xiao, Zhonghua Wu, Jieran Zhu, Laju Han, Zuohui Li, Yanjun Zhou, Zhijun Tang
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Patent number: 9938445Abstract: The present disclosure discloses a comb polymer or a salt thereof, wherein the structural formula of the comb polymer containing the following constitutional units. When the comb polymer provided in the present disclosure is used in a water-based drilling fluid as a filtration control agent, it can eliminate the defects of conventional filtration control agents which would be subject to ineffectiveness under high temperature and high salinity conditions. The comb polymer has high temperature and salt resistance, and can be produced through simple processes at comparatively low costs. When the comb polymer provided by the present disclosure is used as a filtration control agent, even being added into the drilling fluid at a comparatively low amount, it can still present rather good effects in lowering the amount of filter loss.Type: GrantFiled: December 24, 2014Date of Patent: April 10, 2018Assignees: Sinopec Oilfield Service Corporation, Drilling Technology Research Institute of SinopecInventors: Gongrang Li, Qiang Lan, Peng Zhang, Chengsheng Zheng, Yunbo Xu, Xueqin Wu, Zuohui Li, Yanjun Zhou, Hong Zhang
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Publication number: 20170284158Abstract: A push-the-bit rotary guiding device includes a mandrel having a central passage; a sleeve which is rotatably sleeved outside the mandrel; a plurality of swing ribs which are circumferentially arranged in an outer wall of the sleeve with an interval; an actuation mechanism, for controlling each swing rib to swing respectively; a plurality of detectors, which are circumferentially arranged in the outer wall of the sleeve with an interval, for detecting a distance to a well wall in real-time; and a controller, for determining whether the actuation mechanism is required to actuate the swing ribs to swing according to the detected distance. An application method of the push-the-bit rotary guiding device is provided. According to the push-the-bit rotary guiding device, through a real-time detection of the detectors, a well section having an expanded or reduced diameter is detected in time and guiding of the rotary guiding device herein is avoided.Type: ApplicationFiled: September 16, 2015Publication date: October 5, 2017Inventors: Xiao Hongbing, Jinzhou Yang, Laiju Han, Zuohui Li, Haihua Zhang, Zhijun Tang, Yanjun Zhou
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Publication number: 20150203736Abstract: The present disclosure discloses a comb polymer or a salt thereof, wherein the structural formula of the comb polymer containing the following constitutional units. When the comb polymer provided in the present disclosure is used in a water-based drilling fluid as a filtration control agent, it can eliminate the defects of conventional filtration control agents which would be subject to ineffectiveness under high temperature and high salinity conditions. The comb polymer has high temperature and salt resistance, and can be produced through simple processes at comparatively low costs. When the comb polymer provided by the present disclosure is used as a filtration control agent, even being added into the drilling fluid at a comparatively low amount, it can still present rather good effects in lowering the amount of filter loss.Type: ApplicationFiled: December 24, 2014Publication date: July 23, 2015Inventors: Gongrang LI, Qiang LAN, Peng ZHANG, Chengsheng ZHENG, Yunbo XU, Xueqin WU, Zuohui LI, Yanjun ZHOU, Hong Zhang