Patents by Inventor Jiaqiang Chen
Jiaqiang 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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Patent number: 11973282Abstract: Disclosed is a midband dipole for use in a multiband antenna. The midband dipole has four folded dipoles, each of which is coupled to a decoupling circuit that has two capacitance points. The disclosed decoupling circuit configuration mitigates common mode resonance with nearby lowband dipoles, further preventing cross polarization in the midband.Type: GrantFiled: March 7, 2023Date of Patent: April 30, 2024Assignee: John Mezzalingua Associates, LLCInventors: Jiaqiang Zhu, Niranjan Sundararajan, Wengang Chen
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Publication number: 20220281808Abstract: Disclosed is a preparation method for preparing diphenylmethane diisocyanate. The preparation method comprises: under a catalyst condition, performing a pyrolysis reaction on diphenylmethane dicarbamate in an inert solvent having a boiling point lower than that of diphenylmethane diisocyanate to obtain diphenylmethane diisocyanate.Type: ApplicationFiled: August 17, 2020Publication date: September 8, 2022Applicant: Institute of Process Engineering, Chinese Academy of SciencesInventors: Huiquan Li, Liguo Wang, Peng He, Yan Cao, Jiaqiang Chen, Shuang Xu
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Patent number: 10584802Abstract: A valve core for an electronic valve, which includes a valve head, and an armature. The valve head and the armature being connected to each other by means of a guide rod. The valve core is part of an electronic valve. The valve head and armature are connected by means of the guide rod, which reduces the cost for manufacturing the armature. The electronic valve includes an upper stator and a lower stator, an upper bearing and a lower bearing for guiding the guide rod, an elastic component for biasing the valve head, a sleeve surrounding the periphery of the armature, a bobbin which at least partially surrounds the sleeve, and a coil wound on the bobbin. The electronic valve of the present invention may be used as a compressed gas bypass valve of a turbocharged engine.Type: GrantFiled: February 21, 2017Date of Patent: March 10, 2020Assignee: Continental Automotive GmbHInventors: Jiaqiang Chen, Xiangguang Cao, Guangrui Sun, Baiping Wang, Russell M Modien
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Publication number: 20170159842Abstract: A valve core for an electronic valve, which includes a valve head, and an armature. The valve head and the armature being connected to each other by means of a guide rod. The valve core is part of an electronic valve. The valve head and armature are connected by means of the guide rod, which reduces the cost for manufacturing the armature. The electronic valve includes an upper stator and a lower stator, an upper bearing and a lower bearing for guiding the guide rod, an elastic component for biasing the valve head, a sleeve surrounding the periphery of the armature, a bobbin which at least partially surrounds the sleeve, and a coil wound on the bobbin. The electronic valve of the present invention may be used as a compressed gas bypass valve of a turbocharged engine.Type: ApplicationFiled: February 21, 2017Publication date: June 8, 2017Inventors: Jiaqiang Chen, Xiangguang Cao, Guangrui Sun, Baiping Wang, Russell M Modien
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Patent number: 9062161Abstract: A method for preparing polymethylene polyphenyl polycarbamate is provided. The method includes dissolving phenylcarbamate in a water-immiscible organic solvent to form a solution A, formulating an aqueous acid catalyst solution to form a solution B, forming a reaction system comprising an organic phase and an aqueous phase by firstly adding a methylating reagent to the solution B and then mixing the solution A and the solution B, wherein the organic phase comprises phenylcarbamate and the aqueous phase comprises the acid catalyst and the methylating reagent. The method further includes reacting the reaction system under stirring at a reaction temperature of 30° C. to 200° C. and a reaction pressure of 0.05 MPa to 5 MPa to produce a polymethylene polyphenyl polycarbamate product mixture dissolved in the organic phase, and separating the polymethylene polyphenyl polycarbamate product mixture by allowing the organic phase and the aqueous phase to stand still and stratify.Type: GrantFiled: November 8, 2011Date of Patent: June 23, 2015Assignee: Institute of Process Engineering, Chinese Academy of SciencesInventors: Huiquan Li, Haitao Liu, Jiaqiang Chen, Kaihua Zhang, Yan Cao
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Publication number: 20140316100Abstract: A method for preparing polymethylene polyphenyl polycarbamate is provided, which is carried out through the condensation of phenylcarbamate with a methylating reagent under the catalyzation of a phase transfer acid catalyst. The method comprises: dissolving phenylcarbamate in a water-immiscible organic solvent to form a solution A; formulating an aqueous acid catalyst solution to fibrin a solution B; forming a reaction system comprising an organic phase and an aqueous phase by firstly adding a methylating reagent to the solution B and then mixing the solution A and the solution B or by adding the methylating reagent at the same time of mixing the solution A and the solution B or after mixing the solution A and the solution B; reacting the reaction system under stirring at a reaction temperature of 30° C. to 200° C. and a reaction pressure of 0.Type: ApplicationFiled: November 8, 2011Publication date: October 23, 2014Applicant: INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCESInventors: Huiquan Li, Haitao Liu, Jiaqiang Chen, Kaihua Zhang, Yan Cao
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Patent number: 8425091Abstract: A divided LED lamp includes an LED assembly, a casing assembly, LED electronics, power and signal cables, a control panel including a display screen and operation buttons, and a bracket for mounting the lamp. The casing assembly includes a first casing member and a second casing member. At least one cable tube is formed between the first casing member and the second casing member. The power and signal cables that connect the LED assembly received in the first casing member and the LED electronics received in the second casing member are received through the cable tube. This arrangement allows the LED assembly and the LED electronics to be received in individual and independent casing members and are associated with respective individual heat dissipation fins or heat radiators, so as to realize high efficiency of heat dissipation, stabilized operation, and extended lifespan.Type: GrantFiled: May 8, 2009Date of Patent: April 23, 2013Assignee: Guangzhou Yajiang Photoelectric Equipment Co., Ltd.Inventor: Jiaqiang Chen
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Publication number: 20100315824Abstract: A divided LED lamp includes an LED assembly, a casing assembly, LED electronics, power and signal cables, a control panel including a display screen and operation buttons, and a bracket for mounting the lamp. The casing assembly includes a first casing member and a second casing member. At least one cable tube is formed between the first casing member and the second casing member. The power and signal cables that connect the LED assembly received in the first casing member and the LED electronics received in the second casing member are received through the cable tube. This arrangement allows the LED assembly and the LED electronics to be received in individual and independent casing members and are associated with respective individual heat dissipation fins or heat radiators, so as to realize high efficiency of heat dissipation, stabilized operation, and extended lifespan.Type: ApplicationFiled: May 8, 2009Publication date: December 16, 2010Inventor: Jiaqiang Chen