Patents by Inventor Qiang Du
Qiang Du 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: 20240102793Abstract: An on-line measurement-error correction device and method for the inner profile of a special-shaped shell, including a fixing device. A vertical moving device is fixed at the top of the fixing device and connected with a horizontal moving device connected with a distance monitoring device, which is movable vertically and horizontally under the drive of the vertical and horizontal moving devices. The distance monitoring device includes a displacement monitoring element fixedly arranged on a fixing support hinged with an electric push rod configured to displace to drive the displacement monitoring element to deflect so as to change a monitoring direction. The displacement monitoring element is driven to deflect by the electric push rod of the distance monitoring device to change a monitoring direction, and a distance between each longitudinal section surface point on the inner surface of the special-shaped shell and the displacement monitoring element can be gradually measured.Type: ApplicationFiled: March 15, 2023Publication date: March 28, 2024Applicants: SHANDONG UNIVERSITY, SHANDONG RESEARCH AND DESIGN INSTITUTE OF INDUSTRIAL CERAMICS CO., LTD.Inventors: Qinghua SONG, Xiaojuan WANG, Liping JIANG, Hongsheng WANG, Qiang LUAN, Zhanqiang LIU, Yicong DU
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Publication number: 20240093608Abstract: A tunnel automatic monitoring and measuring equipment and method based on fixed-point tour measurement are provided. The equipment includes a monitoring trolley that can move freely in the longitudinal direction of the tunnel, multiple automatic tracking and identification devices are set on the monitoring trolley, the automatic tracking and identification device is connected to the background processing system telecommunication; a monitoring points with reflective markings are arranged on the surface of the tunnel support structure, under the cooperation of the monitoring trolley and the automatic tracking and identification device, the reflective markings set on the tunnel support structure can be automatically measured at the fixed point to obtain the coordinate information of the relevant monitoring points; then, the deformation data of the support structure required in the construction process are extracted by coordinate information calculation.Type: ApplicationFiled: November 17, 2023Publication date: March 21, 2024Applicant: Guizhou Transportation Planning Survey & Design Academe Co.LTDInventors: Qiang HU, Bin DU, Yicheng WANG, Xiaoyong LIU, Deming GOU, Hong YANG, Junwei CHUN, Mingfang WU, Mingjiang DAI
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Patent number: 11918980Abstract: A catalyst for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction as well as a preparation method and use thereof are provided. The catalyst includes a zero-valent iron and phosphorus co-modified carbon material which includes a carbon material as a carrier, a zero-valent iron supported onto the carrier and serving as an active component, and a phosphate functional group formed on the surface of the carbon material. The preparation method includes: co-modifying a carbon material using a ferric salt and organic phosphorus to obtain the catalyst for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction. The present application further provides a method for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction.Type: GrantFiled: December 24, 2021Date of Patent: March 5, 2024Assignees: NINGBO INSTITUTE OF MATERIALS TECHNOLOGY & ENGINEERING, CHINESE ACADEMY OF SCIENCES, NINGBO JUHUA CHEMICAL & SCIENCE CO., LTD.Inventors: Yexin Zhang, Qiang Zhou, Jian Zhang, Junliang Zhong, Xiuxiu Wang, Jili Du, Hui Chen, Chengjun Mu, Jie Yang, Linbing Xia, Yong Yang, Gang Wu
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Patent number: 11919976Abstract: The present invention relates to a preparation and purification method for cationic quaternary ammonium salt of sodium hyaluronate in homogeneous medium. By adding a homogeneous solvent and a sodium hyaluronate solid to a vessel, heating the vessel until the contents are dissolved to form a homogeneous system, adding an aqueous solution of 2,3-epoxypropyltrimethylammonium chloride (GTA) to the homogeneous system, then adding a base catalyst, and stirring at a preset temperature to carry out a graft reaction, a graft product is obtained wherein 2,3-epoxypropyltrimethylammonium chloride is grafted to the oxygen atom of the hydroxymethyl group of sodium hyaluronate. By using the method, a graft product wherein 2,3-epoxypropyltrimethylammonium chloride is grafted to the oxygen atom of the hydroxymethyl group of sodium hyaluronate is obtained. Addition of salts is avoided during the reaction, a grafting yield up to 0.69 is obtained, and coagulation occurred to the product is effectively solved.Type: GrantFiled: April 11, 2023Date of Patent: March 5, 2024Assignee: SHANDONG FOCUSFREDA BIOTECH CO., LTDInventors: Jinmao You, Lei Liu, Chuanli Kang, Shuiqiang Yu, Deqiang Zheng, Qing Li, Shuai Du, Xinxin Shi, Qiang Liu, Liwei Tang, Shaojie Lian, Meixia Zhang
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Patent number: 11883862Abstract: The present invention discloses a pipeline automatic scale removal and storage device. The device comprises a scale remover, a scale storage device and a coupling; the scale remover is composed of a scale breaking mechanism, a cutting mechanism and a grinding mechanism; a plurality of groups of scale breaking teeth of the scale breaking mechanism can preliminarily break scale on an inner wall of a pipeline; the cutting mechanism cuts and eliminates the scale on the inner wall of the pipeline through a plurality of installed cutting blades; and a plurality of groups of grinding blocks of the grinding mechanism further grind and eliminate the scale on the pipeline; and the scale storage device is used for realizing storage for the scale. The scale storage device is hermetically and movably installed in the pipeline. The device of the present invention can automatically thoroughly eliminate the scale in the pipeline.Type: GrantFiled: April 20, 2023Date of Patent: January 30, 2024Assignees: Southwest Petroleum University, Sichuan Xinchuangneng Petroleum Eng. Tech. Co Ltd, Sichuan Zhongtuo Youshi Light Control Tech. Co LtdInventors: Dezhi Zeng, Miaopeng Zhou, Jianqi Yang, Qiang Du, Dikui Cheng, Baojun Dong, Qiang Zhang, Jiangjiang Zhang, Gang Tian
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Publication number: 20230356270Abstract: The present invention discloses a pipeline automatic scale removal and storage device. The device comprises a scale remover, a scale storage device and a coupling; the scale remover is composed of a scale breaking mechanism, a cutting mechanism and a grinding mechanism; a plurality of groups of scale breaking teeth of the scale breaking mechanism can preliminarily break scale on an inner wall of a pipeline; the cutting mechanism cuts and eliminates the scale on the inner wall of the pipeline through a plurality of installed cutting blades; and a plurality of groups of grinding blocks of the grinding mechanism further grind and eliminate the scale on the pipeline; and the scale storage device is used for realizing storage for the scale. The scale storage device is hermetically and movably installed in the pipeline. The device of the present invention can automatically thoroughly eliminate the scale in the pipeline.Type: ApplicationFiled: April 20, 2023Publication date: November 9, 2023Inventors: Dezhi Zeng, Miaopeng Zhou, Jianqi Yang, Qiang Du, Dikui Cheng, Baojun Dong, Qiang Zhang, Jiangjiang Zhang, Gang Tian
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Patent number: 11744045Abstract: An electronic device that includes a first device portion, a second device portion coupled to the first device portion; and a thermally conductive connector coupled to the first device portion and the second device portion, wherein the thermally conductive connector includes a graphite sheet. The first device portion includes a region that includes a component configured to generate heat.Type: GrantFiled: November 10, 2021Date of Patent: August 29, 2023Assignee: QUALCOMM INCORPORATEDInventors: Hung-Wen Lin, Sin-Shong Wang, Jen-Chun Chang, Qiang Du, Jorge Luis Rosales, Ajit Kumar Vallabhaneni
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Publication number: 20230145773Abstract: An electronic device that includes a first device portion, a second device portion coupled to the first device portion; and a thermally conductive connector coupled to the first device portion and the second device portion, wherein the thermally conductive connector includes a graphite sheet. The first device portion includes a region that includes a component configured to generate heat.Type: ApplicationFiled: November 10, 2021Publication date: May 11, 2023Inventors: Hung-Wen LIN, Sin-Shong WANG, Jen-Chun CHANG, Qiang DU, Jorge Luis ROSALES, Ajit Kumar VALLABHANENI
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Publication number: 20210341764Abstract: This disclosure provides systems, methods, and apparatus related to optical systems. In one aspect, a method includes: generating a plurality of laser beams; receiving the plurality of laser beams at the point at a diffractive optical element, the diffracting optical element diffracting the plurality of laser beams to generate a plurality of output laser beams including a central laser beam and a plurality of side laser beams; measuring a power of at least two of the plurality of output laser beams generated by the diffractive optical element; determining a phase error in laser beams of the plurality of laser beams from the power of the at least two of the plurality of output laser beams; and changing the phase N?1 laser beams of the plurality of laser beams, with N being a number of the plurality of laser beams.Type: ApplicationFiled: April 22, 2021Publication date: November 4, 2021Inventors: Qiang Du, Russell B. Wilcox, Tong Zhou, Lawrence R. Doolittle, Gang Huang, Derun Li
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Patent number: 10994328Abstract: A method for casting that includes a.) determining a diameter (D) of a cross section of a product to be cast in meter (m), b.) determining an intended steady-state casting speed (V) of the product to be cast using direct chill casting in meter per second (m/s), c.) determining a Si content (cSi) in percent by weight based on the total weight of a melt (wt-%) for the melt to be used for casting the cast product, d.) preparing a melt comprising Zn: 5.30 to 5.9 wt-%, Mg: 2.07 to 3.3 wt-%, Cu: 1.2 to 1.45 wt-%, Fe: 0 to 0.5 wt-%, Si: according to cSi, impurities up to 0.2 wt-% each and 0.5 wt-% in total, and balance aluminium, and e.) casting the melt into the cast product having the intended diameter (D) using direct chill casting, wherein the casting is carried out using the intended steady-state casting speed (V).Type: GrantFiled: January 21, 2019Date of Patent: May 4, 2021Assignee: NORSK HYDRO ASAInventors: Arild Håkonsen, Rune Ledal, Britt Elin Gihleengen, Knut Omdal Tveito, John Erik Hafsås, Kjerstin Ellingsen, Qiang Du, Mohammed M'Hamdi
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Publication number: 20210053112Abstract: A method for casting that includes a.) determining a diameter (D) of a cross section of a product to be cast in meter (m), b.) determining an intended steady-state casting speed (V) of the product to be cast using direct chill casting in meter per second (m/s), c.) determining a Si content (cSi) in percent by weight based on the total weight of a melt (wt-%) for the melt to be used for casting the cast product, d.) preparing a melt comprising Zn: 5.30 to 5.9 wt-%, Mg: 2.07 to 3.3 wt-%, Cu: 1.2 to 1.45 wt-%, Fe: 0 to 0.5 wt-%, Si: according to cSi, impurities up to 0.2 wt-% each and 0.5 wt-% in total, and balance aluminium, and e.) casting the melt into the cast product having the intended diameter (D) using direct chill casting, wherein the casting is carried out using the intended steady-state casting speed (V).Type: ApplicationFiled: January 21, 2019Publication date: February 25, 2021Applicant: NORSK HYDRO ASAInventors: Arild HÅKONSEN, Rune LEDAL, Britt Elin GIHLEENGEN, Knut Omdal TVEITO, John Erik HAFSÅS, Kjerstin ELLINGSEN, Qiang DU, Mohammed M'HAMDI
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Patent number: 10834795Abstract: Disclosed are a backlight drive circuit, a backlight driving method, and a display device. The backlight drive circuit according to some embodiments of the disclosure includes: a plurality of LED strips configured to be powered in a time-division mode; a discharging circuit connected with anodes of the plurality of LED strips; and a first switch element connected with cathodes of the plurality of LED strips, wherein the first switch element has a first terminal connected with the cathodes of the plurality of LED strips, and a second terminal grounded, and the first switch element is configured to be turned on when any one of the plurality of LED strips is powered on.Type: GrantFiled: January 24, 2019Date of Patent: November 10, 2020Assignee: Hisense Visual Technology Co., Ltd.Inventors: Yuxin Zhang, Junxiong Zhang, Qiang Du
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Patent number: 10796644Abstract: The embodiments of the disclosure discloses a method of driving a dynamic backlight and a display device. In this method, a vertical synchronization signal corresponding to an input image signal is received; a first level signal and a second level signal are outputted alternately in response to a change edge of the vertical synchronization signal, where the total duration of the first level signal and the second level signal is 1/m of the duration between the change edge and a first change edge before the change edge, wherein the change edge and the first change edge before the change edge are change edges of a same changing direction; m is a positive integer; and the drive chip receives the first level signal and the second level signal and generates a PWM signal according to the first level signal and the second level signal.Type: GrantFiled: July 3, 2018Date of Patent: October 6, 2020Assignees: HISENSE VISUAL TECHNOLOGY CO., LTD., HISENSE INTERNATIONAL CO., LTD., HISENSE USA CORPORATIONInventors: Qiang Du, Yuxin Zhang, Tingke Cai
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Patent number: 10788704Abstract: The present disclosure describes a liquid crystal display device. The liquid crystal display device includes a substrate and a plurality of light sources disposed on the substrate and configured to generate excitation light. The liquid crystal display device includes a quantum dot film disposed in a light-emitting direction of the plurality of light sources and a plurality of stereoscopic reflecting plates disposed on the substrate. The liquid crystal display device includes an optical layer disposed between the plurality of light sources and the quantum dot film. The plurality of stereoscopic reflecting plates and the plurality of light sources form a plurality of cavities arranged in an array. The plurality of light sources are located on bottoms of the plurality of cavities respectively. The optical layer is disposed between the plurality of cavities and the quantum dot film, and configured to partially transmit and partially reflect the excitation light.Type: GrantFiled: December 13, 2019Date of Patent: September 29, 2020Assignee: HISENSE VISUAL TECHNOLOGY CO., LTD.Inventors: Fulin Li, Qiang Du
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Publication number: 20200117054Abstract: The present disclosure describes a liquid crystal display device. The liquid crystal display device includes a substrate and a plurality of light sources disposed on the substrate and configured to generate excitation light. The liquid crystal display device includes a quantum dot film disposed in a light-emitting direction of the plurality of light sources and a plurality of stereoscopic reflecting plates disposed on the substrate. The liquid crystal display device includes an optical layer disposed between the plurality of light sources and the quantum dot film. The plurality of stereoscopic reflecting plates and the plurality of light sources form a plurality of cavities arranged in an array. The plurality of light sources are located on bottoms of the plurality of cavities respectively. The optical layer is disposed between the plurality of cavities and the quantum dot film, and configured to partially transmit and partially reflect the excitation light.Type: ApplicationFiled: December 13, 2019Publication date: April 16, 2020Applicant: Qingdao Hisense Electronics Co., Ltd.Inventors: Fulin LI, Qiang DU
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Publication number: 20190159311Abstract: Disclosed are a backlight drive circuit, a backlight driving method, and a display device. The backlight drive circuit according to some embodiments of the disclosure includes: a plurality of LED strips configured to be powered in a time-division mode; a discharging circuit connected with anodes of the plurality of LED strips; and a first switch element connected with cathodes of the plurality of LED strips, wherein the first switch element has a first terminal connected with the cathodes of the plurality of LED strips, and a second terminal grounded, and the first switch element is configured to be turned on when any one of the plurality of LED strips is powered on.Type: ApplicationFiled: January 24, 2019Publication date: May 23, 2019Inventors: Yuxin ZHANG, Junxiong ZHANG, Qiang DU
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Patent number: 10237289Abstract: The present disclosure provides a method and a device for detecting network intrusion. The method includes: obtaining a feature vector of a network flow to be detected; and detecting the feature vector using a deep neural network, and determining a network intrusion category of the network flow to be detected, in which the deep neural network is generated by training with training data, the training data includes feature vectors of normal samples and feature vectors of attack samples, the attack samples include original attack samples and generated attack samples by adding noise to the original attack samples. The method can improve an ability to identify unknown attacks and a normalization ability of known attacks.Type: GrantFiled: September 7, 2017Date of Patent: March 19, 2019Assignee: Neusoft CorporationInventor: Qiang Du
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Patent number: 10164897Abstract: A method for removing computing assets from service in a provider network includes receiving, from a requestor, identification for selected ones of the computing assets requested to be removed from service. Each of the computing assets is a computing device or a slot of a computing device. A pool in which each of the computing assets requested to be removed from service is located is identified. For each identified pool: which of the computing assets requested to be removed from service is approved for removal from service is determined based on a number of resource instances available for allocation to users after the computing devices are removed from service exceeding a predetermined number of resource instances. The requestor is notified as to which of the computing assets is approved for removal from service.Type: GrantFiled: June 28, 2016Date of Patent: December 25, 2018Assignee: Amazon Technologies, Inc.Inventors: Bradley Joseph Gussin, Pratik Ramdharne, Qiang Du, Chen Yang
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Publication number: 20180315379Abstract: The embodiments of the disclosure discloses a method of driving a dynamic backlight and a display device. In this method, a vertical synchronization signal corresponding to an input image signal is received; a first level signal and a second level signal are outputted alternately in response to a change edge of the vertical synchronization signal, where the total duration of the first level signal and the second level signal is 1/m of the duration between the change edge and a first change edge before the change edge, wherein the change edge and the first change edge before the change edge are change edges of a same changing direction; m is a positive integer; and the drive chip receives the first level signal and the second level signal and generates a PWM signal according to the first level signal and the second level signal.Type: ApplicationFiled: July 3, 2018Publication date: November 1, 2018Inventors: Qiang DU, Yuxin ZHANG, Tingke CAI
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Publication number: 20180115568Abstract: The present disclosure provides a method and a device for detecting network intrusion. The method includes: obtaining a feature vector of a network flow to be detected; and detecting the feature vector using a deep neural network, and determining a network intrusion category of the network flow to be detected, in which the deep neural network is generated by training with training data, the training data includes feature vectors of normal samples and feature vectors of attack samples, the attack samples include original attack samples and generated attack samples by adding noise to the original attack samples. The method can improve an ability to identify unknown attacks and a normalization ability of known attacks.Type: ApplicationFiled: September 7, 2017Publication date: April 26, 2018Applicant: Neusoft CorporationInventor: Qiang Du