Patents by Inventor Yanchun Wang
Yanchun Wang 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: 9816028Abstract: The present disclosure is directed to a rapid process for the preparation of gadolinium oxysulfide having a general formula of Gd2O2S, referred to as GOS, scintillation ceramics by using the combination of spark plasma primary sintering (SPS) and hot isostatic pressing secondary sintering.Type: GrantFiled: August 14, 2015Date of Patent: November 14, 2017Assignees: Tsinghua University, Nuctech Company LimitedInventors: Yanchun Wang, Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Jianping Chang, Shuqing Zhao, Wenjian Zhang, Yongqiang Wang
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Patent number: 9771515Abstract: The present disclosure is directed to a low cost sintering process for the preparation of gadolinium oxysulfide having a general formula of Gd2O2S, referred to as GOS, scintillation ceramics, comprising uniaxial hot pressing primary sintering and hot isostatic pressing secondary sintering.Type: GrantFiled: August 14, 2015Date of Patent: September 26, 2017Assignees: Tsinghua University, Nuctech Company LimitedInventors: Yanchun Wang, Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Jianping Chang, Shuqing Zhao, Wenjian Zhang, Yongqiang Wang
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Patent number: 9618484Abstract: The present invention discloses a general sample injector, comprising a sample injection port mechanism, a sample injector shell, a vaporizing chamber, a heater, a temperature control unit, a carrier gas channel, a septum purge channel, a flow splitting channel, a coolant channel, a multichannel flow control valve and a temperature control unit. The general sample injector, equivalent to a “programmed temperature vaporizer” injector combining splitting/no splitting with cold column head sample injection, gives full play to the advantages of various sample injection modes, overcomes a plurality of disadvantages, and has higher practicability and better flexibility.Type: GrantFiled: December 19, 2014Date of Patent: April 11, 2017Assignee: Nuctech Company LimitedInventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Qiufeng Ma, Ziran Zhao, Yinong Liu, Yaohong Liu, Junxiao Wang, Xiang Zou, Yanchun Wang, Jianping Chang, Linxia Tan
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Patent number: 9513266Abstract: A GC-IMS system is disclosed. The system includes a sample transfer device. The sample transfer device connects the gas chromatograph to the reaction region and, the sample from the gas chromatograph is transferred to the reaction region by the sample transfer device. With the GC-IMS system, generation of sample molecular ion fragments can be avoided so that the spectrum is easily identified; moreover, the application field of the GC-IMS system is extended to a range of analysis of organic macromolecule samples which have a high polarity, are difficult to volatilize, and are thermally instable. On the other hand, the GC-IMS system overcomes the defect of ion destruction due to neutralization reaction among positive and negative ions so as to evade the detection.Type: GrantFiled: December 19, 2014Date of Patent: December 6, 2016Assignee: NUCTECH COMPANY LIMITEDInventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Qiufeng Ma, Ziran Zhao, Yinong Liu, Yaohong Liu, Xiang Zou, Yanchun Wang, Junxiao Wang, Jianping Chang
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Publication number: 20160347616Abstract: A method for preparing a carbon nanotube (CNT) film is provided, comprising: providing a growth chamber of CNTs, which includes an inlet end, an outlet end, and a first-level growth cavity and a second-level growth cavity, and the first-level growth cavity and the second-level growth cavity are in fluid communication between the inlet end and the outlet end; making precursor materials, which are used for forming CNTs, react in at least the first-level growth cavity of the growth chamber of CNTs to generate CNTs; and making a carrier gas flow into the growth chamber through the inlet end, and pass through the first-level growth cavity and the second-level growth cavity in sequence, wherein, a radial dimension of the first-level growth cavity in a flowing direction of the carrier gas is smaller than that of the second-level growth cavity at a junction between the first-level growth cavity and the second-level growth cavity, and a bubble blowing process is conducted with the precursor materials under the drive oType: ApplicationFiled: April 22, 2014Publication date: December 1, 2016Inventors: WEIYA ZHOU, QIANG ZHANG, YANCHUN WANG, SISHEN XIE
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Publication number: 20160187500Abstract: A method for processing a ceramic scintillator array, characterized in that, comprising the following steps: (a) forming, in a first direction, a predetermined number of straight first-direction through-cuts which are parallel to each other and spaced from each other on a scintillator substrate by using laser; (b) adequately filling the first-direction through-cuts with an adhesive and solidifying the adhesive; (c) forming, in a second direction. a predetermined number of second direction through-cuts which are parallel to each other at a predetermined interval on the scintillator substrate by using laser, wherein the second direction is perpendicular to the first direction; and (d) adequately filling the second direction through-cuts with the adhesive and solidifying the adhesive bond.Type: ApplicationFiled: December 29, 2015Publication date: June 30, 2016Inventors: Yanchun WANG, Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Ziran ZHAO, Yinong LIU, Yaohong LIU, Jianping CHANG, Wenjian ZHANG, Shuqing ZHAO, Xiang ZOU, Yongqiang WANG
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Patent number: 9337626Abstract: The present invention discloses a corona discharge assembly, an ion mobility spectrometer, an computer program and an computer readable storage medium. The corona discharge assembly includes: an ionization discharge chamber, wherein the ionization discharge chamber includes a metal corona cylinder, and the metal corona cylinder is provided with an inlet of a gas to be analyzed and a trumpet-shaped front port which is conductive to forming a gathered electric field; multiple corona pins, in which on-off of a high voltage can be independently controlled, are installed at the center of the metal corona cylinder in an insulating manner. The present invention further discloses an ion mobility spectrometer using the above-mentioned corona discharge assembly.Type: GrantFiled: December 19, 2014Date of Patent: May 10, 2016Assignee: NUCTECH COMPANY LIMITEDInventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Yanchun Wang, Ziran Zhao, Yinong Liu, Yaohong Liu, Xiang Zou, Qiufeng Ma, Junxiao Wang, Xianghua Li, Jianping Chang
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Publication number: 20160115030Abstract: A method for preparing a carbon nanotube (CNT) film is provided, comprising: providing a growth chamber of CNTs, which includes an inlet end, an outlet end, and a first-level growth cavity and a second-level growth cavity, and the first-level growth cavity and the second-level growth cavity are in fluid communication between the inlet end and the outlet end; making precursor materials, which are used for forming CNTs, react in at least the first-level growth cavity of the growth chamber of CNTs to generate CNTs; and making a carrier gas flow into the growth chamber through the inlet end, and pass through the first-level growth cavity and the second-level growth cavity in sequence, wherein, a radial dimension of the first-level growth cavity in a flowing direction of the carrier gas is smaller than that of the second-level growth cavity at a junction between the first-level growth cavity and the second-level growth cavity, and a bubble blowing process is conducted with the precursor materials under the drive oType: ApplicationFiled: April 22, 2014Publication date: April 28, 2016Inventors: WEIYA ZHOU, QIANG ZHANG, YANCHUN WANG, SISHEN XIE
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Patent number: 9285342Abstract: An ion mobility spectrometer system is disclosed. In one aspect, the system includes a gas chromatograph, first and second ion mobility spectrometers, and a sample feed device that feeds a sample from the gas chromatograph to the first and second ion mobility spectrometers. The sample feed device includes an inner chamber, first and second sample outlets for outputting the sample from the gas chromatograph to the first and second ion mobility spectrometers, respectively, and a gas inlet for inputting a gas into the sample feed device. The system detects and identifies molecules at improved resolution and enhanced molecule information. The system detects positive and negative ions, interrelates positive-mode and negative-mode spectrums, and separates substances.Type: GrantFiled: October 27, 2014Date of Patent: March 15, 2016Assignee: Nuctech Company LimitedInventors: Qingjun Zhang, Shiping Cao, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Jianping Chang, Yan Zheng, Yanchun Wang, Shaoji Mao
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Publication number: 20160046860Abstract: The present disclosure is directed to a low cost sintering process for the preparation of gadolinium oxysulfide having a general formula of Gd2O2S, referred to as GOS, scintillation ceramics, comprising uniaxial hot pressing primary sintering and hot isostatic pressing secondary sintering.Type: ApplicationFiled: August 14, 2015Publication date: February 18, 2016Inventors: Yanchun WANG, Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Jianping Chang, Shuqing Zhao, Wenjian Zhang, Yongqiang Wang
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Publication number: 20160046861Abstract: The present disclosure is directed to a rapid process for the preparation of gadolinium oxysulfide having a general formula of Gd2O2S, referred to as GOS, scintillation ceramics by using the combination of spark plasma primary sintering (SPS) and hot isostatic pressing secondary sintering.Type: ApplicationFiled: August 14, 2015Publication date: February 18, 2016Inventors: Yanchun WANG, Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Jianping Chang, Shuqing Zhao, Wenjian Zhang, Yongqiang Wang
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Patent number: 9231383Abstract: The present invention discloses a corona discharge assembly, including: an ionization discharge chamber, wherein the ionization discharge chamber includes a metal corona cylinder, and the metal corona cylinder is provided with an inlet of a gas to be analyzed and an annular piece-shaped port which forms a non-uniform electric field with corona pins and is provided with a circular hole at the middle; a rotating shaft is installed on the cylinder wall of the metal corona cylinder in an insulating manner, the rotating shaft is vertical to the axial line of the metal corona cylinder, and a turntable provided with multiple corona pins at the outer edge is installed at the end part of the rotating shaft the axial line of the metal corona cylinder passes in parallel through the rotation plane of the turntable. The present invention further discloses an ion mobility spectrometer using the above-mentioned corona discharge assembly.Type: GrantFiled: December 19, 2014Date of Patent: January 5, 2016Assignee: NUCTECH COMPANY LIMITEDInventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Yanchun Wang, Ziran Zhao, Yinong Liu, Yaohong Liu, Xiang Zou, Qiufeng Ma, Junxiao Wang, Jianping Chang
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Publication number: 20150185190Abstract: A GC-IMS system is disclosed in embodiments of the present invention. The system comprises a sample transfer device. The sample transfer device connects the gas chromatograph to the reaction region and, the sample from the gas chromatograph is transferred to the reaction region by the sample transfer device directly, instead of not through the ionization region. With the GC-IMS system, generation of sample molecular ion fragments can be avoided so that the spectrum is brevity and is easily identified; moreover, the application field of the GC-IMS system is extended to a range of analysis of organic macromolecule samples which have a high polarity, are difficult to volatilize, and are thermally instable. On the other hand, the GC-IMS system overcomes the defect of ion destruction due to neutralization reaction among positive and negative ions so as to evade the detection.Type: ApplicationFiled: December 19, 2014Publication date: July 2, 2015Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Qiufeng MA, Ziran ZHAO, Yinong LIU, Yaohong LIU, Xiang ZOU, Yanchun WANG, Junxiao WANG, Jianping CHANG
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Publication number: 20150185189Abstract: The present invention discloses a general sample injector, comprising a sample injection port mechanism, a sample injector shell, a vaporizing chamber, a heater, a temperature control unit, a carrier gas channel, a septum purge channel, a flow splitting channel, a coolant channel, a multichannel flow control valve and a temperature control unit. The general sample injector, equivalent to a “programmed temperature vaporizer” injector combining splitting/no splitting with cold column head sample injection, gives full play to the advantages of various sample injection modes, overcomes a plurality of disadvantages, and has higher practicability and better flexibility.Type: ApplicationFiled: December 19, 2014Publication date: July 2, 2015Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Qiufeng MA, Ziran ZHAO, Yinong LIU, Yaohong LIU, Junxiao WANG, Xiang ZOU, Yanchun WANG, Jianping CHANG, Linxia TAN
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Publication number: 20150188296Abstract: The present invention discloses a corona discharge assembly, including: an ionization discharge chamber, wherein the ionization discharge chamber includes a metal corona cylinder, and the metal corona cylinder is provided with an inlet of a gas to be analyzed and an annular piece-shaped port which forms a non-uniform electric field with corona pins and is provided with a circular hole at the middle; a rotating shaft is installed on the cylinder wall of the metal corona cylinder in an insulating manner, the rotating shaft is vertical to the axial line of the metal corona cylinder, and a turntable provided with multiple corona pins at the outer edge is installed at the end part of the rotating shaft the axial line of the metal corona cylinder passes in parallel through the rotation plane of the turntable. The present invention further discloses an ion mobility spectrometer using the above-mentioned corona discharge assembly.Type: ApplicationFiled: December 19, 2014Publication date: July 2, 2015Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Yanchun WANG, Ziran ZHAO, Yinong LIU, Yaohong LIU, Xiang ZOU, Qiufeng MA, Junxiao WANG, Jianping CHANG
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Publication number: 20150188295Abstract: The present invention discloses a corona discharge assembly, an ion mobility spectrometer, an computer program and an computer readable storage medium. The corona discharge assembly includes: an ionization discharge chamber, wherein the ionization discharge chamber includes a metal corona cylinder, and the metal corona cylinder is provided with an inlet of a gas to be analyzed and a trumpet-shaped front port which is conductive to forming a gathered electric field; multiple corona pins, in which on-off of a high voltage can be independently controlled, are installed at the center of the metal corona cylinder in an insulating manner. The present invention further discloses an ion mobility spectrometer using the above-mentioned corona discharge assembly.Type: ApplicationFiled: December 19, 2014Publication date: July 2, 2015Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Yanchun Wang, Ziran Zhao, Yinong Liu, Yaohong Liu, Xiang Zou, Qiufeng Ma, Junxiao Wang, Xianghua Li, Jianping Chang
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Publication number: 20150115152Abstract: An ion mobility spectrometer system is disclosed. In one aspect, the system includes a gas chromatograph, first and second ion mobility spectrometers, and a sample feed device that feeds a sample from the gas chromatograph to the first and second ion mobility spectrometers. The sample feed device includes an inner chamber, first and second sample outlets for outputting the sample from the gas chromatograph to the first and second ion mobility spectrometers, respectively, and a gas inlet for inputting a gas into the sample feed device. The system detects and identifies molecules at improved resolution and enhanced molecule information. The system detects positive and negative ions, interrelates positive-mode and negative-mode spectrums, and separates substances.Type: ApplicationFiled: October 27, 2014Publication date: April 30, 2015Inventors: Qingjun Zhang, Shiping Cao, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Jianpang Chang, Yan Zheng, Yanchun Wang, Shaoji Mao
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Publication number: 20140187780Abstract: The present invention discloses compounds of formula I, II or X, or pharmaceutically acceptable salts, esters, or prodrugs thereof: which exhibit antibacterial properties. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of antibiotic treatment. The invention also relates to methods of treating a bacterial infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The invention further includes process by which to make the compounds of the present invention.Type: ApplicationFiled: December 24, 2013Publication date: July 3, 2014Applicant: Enanta Pharmaceuticals, Inc.Inventors: In Jong Kim, Tongzhu Liu, Jiang Long, Guoqiang Wang, Yao-Ling Qiu, Heejin Kim, Yanchun Wang, Ly Tam Phan, Yat Sun Or
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Publication number: 20140135485Abstract: The present invention discloses compounds of formula I, or pharmaceutically acceptable salts, esters, or prodrugs thereof: which exhibit antibacterial properties. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of antibiotic treatment. The invention also relates to methods of treating a bacterial infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The invention further includes process by which to make the compounds of the present invention.Type: ApplicationFiled: October 7, 2013Publication date: May 15, 2014Applicant: ENANTA PHARMACEUTICALS, INC.Inventors: Yat Sun Or, Guoqiang Wang, Ly Tam Phan, Dequiang Niu, Nha Huu Vo, Yao-Ling Qiu, Yanchun Wang, Marina V. Busuek, Ying Hou, Yulin Peng, Heejin Kim, Tongzhu Liu, Jay Judson Farmer, Guoyou Xu
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Publication number: 20130231298Abstract: The present invention discloses compounds of formula (I) or pharmaceutically acceptable salts, esters, or prodrugs thereof: which exhibit superior antibacterial properties, particularly against Haemophilus influenzae. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject in need of antibiotic treatment. The invention also relates to methods of treating a bacterial infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention. The invention further includes process by which to make the compounds of the present invention.Type: ApplicationFiled: February 22, 2013Publication date: September 5, 2013Applicant: Enanta Pharmaceuticals, Inc.Inventors: Rajesh Iyengar, Yanchun Wang, Ly Tam Phan, Yat Sun Or