Patents by Inventor Qiwei Chen
Qiwei Chen 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: 20240141756Abstract: The disclosure relates to systems and methods to deploy a chemical inhibitor (e.g., a scale inhibitor, a corrosion inhibitor, a biocide, a wax control substance, an asphaltene control substance) in an oil well.Type: ApplicationFiled: November 2, 2022Publication date: May 2, 2024Inventors: Qiwei Wang, Tao Chen, Hemant K. Sharma
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Patent number: 11959016Abstract: A composition for inhibiting corrosion in gas wells includes a pyrazolopyridine derivative. The pyrazolopyridine derivative includes a pyridyl moiety, a first pyrazole moiety, a second pyrazole moiety, and a phenyl moiety. The first pyrazole moiety is bound to the pyridyl moiety. The second pyrazole moiety is bound to the pyridyl moiety. The phenyl moiety is bound to the pyridyl moiety. The composition can be flowed into a wellbore formed in a subterranean formation, thereby inhibiting corrosion in the wellbore.Type: GrantFiled: June 15, 2021Date of Patent: April 16, 2024Assignees: Saudi Arabian Oil Company, King Fahd University of Petroleum & MineralsInventors: Ime Bassey Obot, Mumtaz A. Quraishi, Ahmad A. Sorour, Tao Chen, Qiwei Wang, Mohammed A. Bataweel, Bader Ghazi Al-Harbi
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Publication number: 20240107830Abstract: A display substrate and a display device are provided. The display substrate includes a base substrate, at least one group of contact pads, a plurality of first light-emitting elements, a plurality of first pixel driving circuits, a plurality of connecting traces, a plurality of data lines and a plurality of leads. The display area includes a first display area and a second display area; the first light-emitting elements are located in the first display area; the first pixel driving circuits are located in the second display area; the leads are located in the first display area and the peripheral area, and connect the data lines and the at least one group of contact pads; orthographic projections of the first light-emitting elements on a substrate surface of the base substrate are at least partly overlapped with orthographic projections of the leads on the substrate surface of the base substrate.Type: ApplicationFiled: April 30, 2021Publication date: March 28, 2024Applicants: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Wenbo CHEN, Linhong HAN, Youngyik KO, Qingqing YAN, Qiwei WANG, Hong YI, Yuanjie XU, Zhongliu YANG, Benlian WANG, Ziyang YU, Lili DU, Haigang QING, Weiyun HUANG
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Publication number: 20240096989Abstract: The present application discloses an MV device, wherein a first gate structure of the MV device is formed by stacking a first gate dielectric layer and a first gate conductive material layer. The first gate dielectric layer is divided into a body gate dielectric layer and an edge gate dielectric layer. The body gate dielectric layer is located in a middle region, and the edge gate dielectric layer surrounds the periphery of the body gate dielectric layer. A channel region is located in a surface of the semiconductor substrate between the lightly doped drain regions on the two sides of the first gate structure. In a channel length direction, the top of the channel region is covered by the body gate dielectric layer. The present application also discloses a method for manufacturing the MV device.Type: ApplicationFiled: July 28, 2023Publication date: March 21, 2024Inventors: Qiwei WANG, Tao LIU, Zhigang ZHANG, Yaoyu ZHAN, Haoyu CHEN
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Publication number: 20240096992Abstract: An MV device is disclosed. A gate conductive material layer is segmented into a body gate conductive material layer and two edge gate conductive material layers along a channel length direction. The two edge gate conductive material layers are located on two sides of the body gate conductive material layer and are spaced apart from the body gate conductive material layer by dielectric segmentation structures. The lightly doped drain regions extend under the first side face and the second side face of the gate conductive material layer, to reach under the body gate conductive material layer, such that the channel region becomes located under the body gate conductive material layer; and the edge gate conductive material layers and the dielectric segmentation structures become located above the lightly doped drain regions. The present disclosure also discloses a method for manufacturing an MV device.Type: ApplicationFiled: August 28, 2023Publication date: March 21, 2024Inventors: Qiwei WANG, Tao LIU, Haoyu CHEN
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Patent number: 11923148Abstract: A substrate-type multi-layer polymer capacitor (MLPC), including a casing, a core, a first electroplated terminal and a second electroplated terminal. The core is arranged in an inner cavity of the casing. The casing is formed by joining two first packaging plates with two second packaging plates. The first and second electroplated terminals are formed by electroplating. The first electroplated terminal is configured to cover one end of the casing to form an anode electrically led out from the core, and the second electroplated terminal is configured to the other end of the casing to form a cathode electrically led out from the core. The first packaging plate includes a substrate, an electrode plate and two metal plates. The first and second electroplated terminals are integrally sealed with the casing.Type: GrantFiled: July 7, 2022Date of Patent: March 5, 2024Assignee: CAPXON ELECTRONIC TECHNOLOGY CO., LTD.Inventors: Qirui Chen, I-Chu Lin, Qiwei Chen
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Publication number: 20240071740Abstract: A method of analyzing the residual of a polymeric scale inhibitor in water containing SO42?, such as produced water, is disclosed. The water also contains a polymeric scale inhibitor that includes 2-acrylamino-2-methylpropane sulfonic acid (AMPS). In the method, an amount of SO42? in a sample of the water is measured. A water soluble salt is introduced into the sample of water, and the salt removes SO42? from the water sample resulting in a low SO42? water sample. The low SO42? water sample is then analyzed, and the analysis includes: determining a sulfur level in the low SO42? water sample, and performing a thermodynamic scale prediction to calculate the amount of SO42? ions remaining in the low SO42? water sample. A concentration of the polymeric scale inhibitor in the water sample is then determined based on an inductively couple plasma (ICP) analysis.Type: ApplicationFiled: August 29, 2022Publication date: February 29, 2024Inventors: Tao CHEN, Qiwei WANG, Faisal ALRASHEED
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Publication number: 20220336152Abstract: A substrate-type multi-layer polymer capacitor (MLPC), including a casing, a core, a first electroplated terminal and a second electroplated terminal. The core is arranged in an inner cavity of the casing. The casing is formed by joining two first packaging plates with two second packaging plates. The first and second electroplated terminals are formed by electroplating. The first electroplated terminal is configured to cover one end of the casing to form an anode electrically led out from the core, and the second electroplated terminal is configured to the other end of the casing to form a cathode electrically led out from the core. The first packaging plate includes a substrate, an electrode plate and two metal plates. The first and second electroplated terminals are integrally sealed with the casing.Type: ApplicationFiled: July 7, 2022Publication date: October 20, 2022Inventors: Qirui CHEN, Yizhu LIN, Qiwei CHEN
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Patent number: 10919832Abstract: Provided is a method for preparing a lower unsaturated fatty acid ester, which comprises carrying out an aldol condensation reaction between dimethoxymethane (DMM) and a lower acid or ester with a molecular formula of R1—CH2—COO—R2 on an acidic molecular sieve catalyst in an inert atmosphere to obtain a lower unsaturated fatty acid or ester(CH2?C(R1)—COO—R2), wherein R1 and R2 are groups each independently selected from the group consisting of H— and C1-C4 saturated alkyl group.Type: GrantFiled: November 25, 2016Date of Patent: February 16, 2021Assignee: Dalian Institute of Chemical Physics, Chinese Academy of SciencesInventors: Zhanling Ma, Wenliang Zhu, Xiangang Ma, Hongchao Liu, Yong Liu, Youming Ni, Shiping Liu, Qiwei Chen, Zhongmin Liu
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Publication number: 20200178668Abstract: A multifunctional comb includes a comb body and a plurality of comb teeth, the comb body has at least one opening extending from the bottom end to the top end. The openings on the comb body can increase the air convection in the comb body in the axial direction and the radial direction and improve the ventilation performance of the comb, so that hair can be quickly dried. During styling, the damage to the hair resulted from a too high temperature is avoided, and the hot wind from the hair drier is more uniformly applied to the hair, therefore, the time for styling the hair is saved.Type: ApplicationFiled: March 20, 2019Publication date: June 11, 2020Inventor: Qiwei Chen
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Publication number: 20200062686Abstract: Provided is a method for preparing a lower unsaturated fatty acid ester, which comprises carrying out an aldol condensation reaction between dimethoxymethane (DMM) and a lower acid or ester with a molecular formula of R1—CH2—COO—R2 on an acidic molecular sieve catalyst in an inert atmosphere to obtain a lower unsaturated fatty acid or ester(CH2?C(R1)—COO—R2), wherein R1 and R2 are groups each independently selected from the group consisting of H- and C1-C4 saturated alkyl group.Type: ApplicationFiled: November 25, 2016Publication date: February 27, 2020Applicant: Dalian Institute of Chemical Physics, Chinese Academy of SciencesInventors: Zhanling MA, Wenliang ZHU, Xiangang MA, Hongchao LIU, Yong LIU, Youming NI, Shiping LIU, Qiwei CHEN, Zhongmin LIU
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Patent number: 9368686Abstract: An article, such as a light emitting device, can include a first material and a second material, wherein the first material is capable of emitting first radiation having a first emission maximum at a first wavelength, and the second material is capable of emitting second radiation in response to capturing the first radiation. The second material can have a second emission maximum at a second wavelength within the visible light spectrum. In an embodiment, the second material can be different from the first material. In another embodiment, a difference between the first wavelength and the second wavelength can be at least approximately 70 nm. Additionally, the second material can include a luminescent material having a formula of Gd3(x)Y3(1-x)Al5(y)Ga5(1-y)O12, where x is at least approximately 0.2 and no greater than approximately 0.99 and y is at least approximately 0.05 and no greater than approximately 0.99.Type: GrantFiled: January 21, 2014Date of Patent: June 14, 2016Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Xiaofeng Peng, Qiwei Chen
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Patent number: 9183962Abstract: A scintillation device includes a ceramic scintillator body that includes a polycrystalline ceramic scintillating material comprising gadolinium. The polycrystalline ceramic scintillating material is characterized by a pyrochlore crystallographic structure. A method of producing a ceramic scintillator body includes preparing a precursor solution including a rare earth element precursor, a hafnium precursor, and an activator (Ac) precursor. The method also includes obtaining a precipitate from the solution and calcining the precipitate to produce a polycrystalline ceramic scintillating material including the rare earth element, hafnium, and the activator, and having a pyrochlore titrating the precursor solution into the precipitant solution structure.Type: GrantFiled: December 24, 2009Date of Patent: November 10, 2015Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Brian C. LaCourse, Anne B. Hardy, Hélène Laetitia Rétot, Qiwei Chen, Xiaofeng Peng
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Patent number: 9175216Abstract: A ceramic scintillator body includes a polycrystalline ceramic scintillating material having a substantially cubic crystallographic structure. The polycrystalline ceramic scintillating material has a chemical composition represented by a general formula LU(2-x)GdxO3:Ac, where x is greater than zero and less than two, and where Ac is an activator.Type: GrantFiled: December 24, 2009Date of Patent: November 3, 2015Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Brian C. LaCourse, Anne B. Hardy, Hélène Laetitia Rétot, Qiwei Chen, Xiaofeng Peng, Bruno Viana, Morteza Zandi
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Publication number: 20150108404Abstract: A polycrystalline ceramic scintillator body includes a ceramic scintillating material comprising an oxide of gadolinium (Gd) and a second rare earth element (Re). The ceramic scintillating material has a composition, expressed in terms of molar percentage of oxide constituents, that includes greater than fifty-five percent (55%) Gd2O3 and a minority percentage of Re2O3. The ceramic scintillating material includes an activator.Type: ApplicationFiled: September 30, 2014Publication date: April 23, 2015Inventors: Brian C. LaCourse, Anne B. Hardy, Helene Laetitia Retot, Qiwei Chen, Xiaofeng Peng, Bruno Viana, Morteza Zandi
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Patent number: 8877093Abstract: A polycrystalline ceramic scintillator body includes a ceramic scintillating material comprising an oxide of gadolinium (Gd) and a second rare earth element (Re). The ceramic scintillating material has a composition, expressed in terms of molar percentage of oxide constituents, that includes greater than fifty-five percent (55%) Gd2O3 and a minority percentage Of Re2O3. The ceramic scintillating material includes an activator.Type: GrantFiled: December 24, 2009Date of Patent: November 4, 2014Assignees: Saint-Gobain Ceramics & Plastics, Inc., Centre National de la Recherche ScientifiqueInventors: Brian C. LaCourse, Anne B. Hardy, Hélène Loetitia Rétot, Qiwei Chen, Xiaofeng Peng, Bruno Viana, Morteza Zandi
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Patent number: 8872119Abstract: A scintillation device includes a free-standing ceramic scintillator body that includes a polycrystalline ceramic scintillating material comprising a rare earth element, wherein the polycrystalline ceramic scintillating material is characterized substantially by a cation-deficient perovskite structure. A method of producing a free-standing ceramic scintillator body includes preparing a precursor solution including a rare earth element precursor, a hafnium precursor and an activator (Ac) precursor, obtaining a precipitate from the solution, and calcining the precipitate to obtain a polycrystalline ceramic scintillating material including a rare earth hafnate doped with the activator and having a cation-deficient perovskite structure.Type: GrantFiled: December 24, 2009Date of Patent: October 28, 2014Assignee: Saint-Gobain Ceramics & Plastics, Inc.Inventors: Anne B. Hardy, Qiwei Chen, Xiaofeng Peng, Nathalie Petigny, Bruno Viana, Andrée Kahn-Harari
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Publication number: 20140203319Abstract: An article, such as a light emitting device, can include a first material and a second material, wherein the first material is capable of emitting first radiation having a first emission maximum at a first wavelength, and the second material is capable of emitting second radiation in response to capturing the first radiation. The second material can have a second emission maximum at a second wavelength within the visible light spectrum. In an embodiment, the second material can be different from the first material. In another embodiment, a difference between the first wavelength and the second wavelength can be at least approximately 70 nm. Additionally, the second material can include a luminescent material having a formula of Gd3(x)Y3(1-x)Al5(y)Ga5(1-y)O12, where x is at least approximately 0.2 and no greater than approximately 0.99 and y is at least approximately 0.05 and no greater than approximately 0.99.Type: ApplicationFiled: January 21, 2014Publication date: July 24, 2014Applicant: Saint-Gobain Ceramics & Plastics, Inc.Inventors: Xiaofeng Peng, Qiwei Chen
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Patent number: D834332Type: GrantFiled: August 17, 2017Date of Patent: November 27, 2018Assignee: Ningbo Raffini Import & Export Co., Ltd.Inventor: Qiwei Chen
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Patent number: D998353Type: GrantFiled: July 7, 2019Date of Patent: September 12, 2023Assignee: NINGBO RAVO IMPORT & EXPORT CO., LTD.Inventor: Qiwei Chen