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).

  • Patent number: 9816028
    Abstract: 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: Grant
    Filed: August 14, 2015
    Date of Patent: November 14, 2017
    Assignees: Tsinghua University, Nuctech Company Limited
    Inventors: Yanchun Wang, Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Jianping Chang, Shuqing Zhao, Wenjian Zhang, Yongqiang Wang
  • Patent number: 9771515
    Abstract: 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: Grant
    Filed: August 14, 2015
    Date of Patent: September 26, 2017
    Assignees: Tsinghua University, Nuctech Company Limited
    Inventors: Yanchun Wang, Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Jianping Chang, Shuqing Zhao, Wenjian Zhang, Yongqiang Wang
  • Patent number: 9618484
    Abstract: 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: Grant
    Filed: December 19, 2014
    Date of Patent: April 11, 2017
    Assignee: Nuctech Company Limited
    Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Qiufeng Ma, Ziran Zhao, Yinong Liu, Yaohong Liu, Junxiao Wang, Xiang Zou, Yanchun Wang, Jianping Chang, Linxia Tan
  • Patent number: 9513266
    Abstract: 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: Grant
    Filed: December 19, 2014
    Date of Patent: December 6, 2016
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Qiufeng Ma, Ziran Zhao, Yinong Liu, Yaohong Liu, Xiang Zou, Yanchun Wang, Junxiao Wang, Jianping Chang
  • Publication number: 20160347616
    Abstract: 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 o
    Type: Application
    Filed: April 22, 2014
    Publication date: December 1, 2016
    Inventors: WEIYA ZHOU, QIANG ZHANG, YANCHUN WANG, SISHEN XIE
  • Publication number: 20160187500
    Abstract: 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: Application
    Filed: December 29, 2015
    Publication date: June 30, 2016
    Inventors: Yanchun WANG, Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Ziran ZHAO, Yinong LIU, Yaohong LIU, Jianping CHANG, Wenjian ZHANG, Shuqing ZHAO, Xiang ZOU, Yongqiang WANG
  • Patent number: 9337626
    Abstract: 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: Grant
    Filed: December 19, 2014
    Date of Patent: May 10, 2016
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Yanchun Wang, Ziran Zhao, Yinong Liu, Yaohong Liu, Xiang Zou, Qiufeng Ma, Junxiao Wang, Xianghua Li, Jianping Chang
  • Publication number: 20160115030
    Abstract: 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 o
    Type: Application
    Filed: April 22, 2014
    Publication date: April 28, 2016
    Inventors: WEIYA ZHOU, QIANG ZHANG, YANCHUN WANG, SISHEN XIE
  • Patent number: 9285342
    Abstract: 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: Grant
    Filed: October 27, 2014
    Date of Patent: March 15, 2016
    Assignee: Nuctech Company Limited
    Inventors: Qingjun Zhang, Shiping Cao, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Jianping Chang, Yan Zheng, Yanchun Wang, Shaoji Mao
  • Publication number: 20160046860
    Abstract: 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: Application
    Filed: August 14, 2015
    Publication date: February 18, 2016
    Inventors: Yanchun WANG, Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Jianping Chang, Shuqing Zhao, Wenjian Zhang, Yongqiang Wang
  • Publication number: 20160046861
    Abstract: 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: Application
    Filed: August 14, 2015
    Publication date: February 18, 2016
    Inventors: Yanchun WANG, Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Yaohong Liu, Jianping Chang, Shuqing Zhao, Wenjian Zhang, Yongqiang Wang
  • Patent number: 9231383
    Abstract: 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: Grant
    Filed: December 19, 2014
    Date of Patent: January 5, 2016
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Yanchun Wang, Ziran Zhao, Yinong Liu, Yaohong Liu, Xiang Zou, Qiufeng Ma, Junxiao Wang, Jianping Chang
  • Publication number: 20150185190
    Abstract: 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: Application
    Filed: December 19, 2014
    Publication date: July 2, 2015
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Qiufeng MA, Ziran ZHAO, Yinong LIU, Yaohong LIU, Xiang ZOU, Yanchun WANG, Junxiao WANG, Jianping CHANG
  • Publication number: 20150185189
    Abstract: 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: Application
    Filed: December 19, 2014
    Publication date: July 2, 2015
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Qiufeng MA, Ziran ZHAO, Yinong LIU, Yaohong LIU, Junxiao WANG, Xiang ZOU, Yanchun WANG, Jianping CHANG, Linxia TAN
  • Publication number: 20150188296
    Abstract: 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: Application
    Filed: December 19, 2014
    Publication date: July 2, 2015
    Inventors: Qingjun ZHANG, Yuanjing LI, Zhiqiang CHEN, Yanchun WANG, Ziran ZHAO, Yinong LIU, Yaohong LIU, Xiang ZOU, Qiufeng MA, Junxiao WANG, Jianping CHANG
  • Publication number: 20150188295
    Abstract: 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: Application
    Filed: December 19, 2014
    Publication date: July 2, 2015
    Inventors: Qingjun Zhang, Yuanjing Li, Zhiqiang Chen, Yanchun Wang, Ziran Zhao, Yinong Liu, Yaohong Liu, Xiang Zou, Qiufeng Ma, Junxiao Wang, Xianghua Li, Jianping Chang
  • Publication number: 20150115152
    Abstract: 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: Application
    Filed: October 27, 2014
    Publication date: April 30, 2015
    Inventors: Qingjun Zhang, Shiping Cao, Yuanjing Li, Zhiqiang Chen, Ziran Zhao, Yinong Liu, Jianpang Chang, Yan Zheng, Yanchun Wang, Shaoji Mao
  • Publication number: 20140187780
    Abstract: 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: Application
    Filed: December 24, 2013
    Publication date: July 3, 2014
    Applicant: 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
  • Publication number: 20140135485
    Abstract: 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: Application
    Filed: October 7, 2013
    Publication date: May 15, 2014
    Applicant: 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
  • Publication number: 20130231298
    Abstract: 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: Application
    Filed: February 22, 2013
    Publication date: September 5, 2013
    Applicant: Enanta Pharmaceuticals, Inc.
    Inventors: Rajesh Iyengar, Yanchun Wang, Ly Tam Phan, Yat Sun Or