Patents by Inventor Changkun Liu
Changkun Liu 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: 20240099179Abstract: The present disclosure provides a machine learning-based hyperspectral detection and visualization method of a nitrogen content in a soil profile. The method includes the following steps: collecting a plurality of soil profile samples; obtaining hyperspectral image data of a soil profile; selecting a plurality of rectangular ranges on a hyperspectral image as region of interest (ROIs), calculating an average spectral curve of all pixels in the ROIs, and analyzing and measuring standard contents of nitrogen in the soil samples corresponding to the ROIs; constructing hyperspectral prediction models of five types of soil nitrogen in the soil profile with reference to different learning algorithms respectively with an average spectrum of ROIs after preprocessing as a predictive variable and a standard soil nitrogen content as a response variable; selecting an optimal prediction model based on evaluation indexes to predict and visualize contents of different forms of nitrogen in the entire soil profile.Type: ApplicationFiled: September 18, 2023Publication date: March 28, 2024Applicant: INSTITUTE OF SOIL SCIENCE, CASInventors: Shengxiang XU, Feng LIU, Xianzhang PAN, Changkun WANG
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Patent number: 11358135Abstract: This invention discloses a preparation method of a hydrocracking catalyst. According to the method, a new functional group is modified through chemical bonds on the surface of a traditionally prepared inorganic carrier, and a VIB group metal element and a VIIIB metal element are then loaded on the carrier to prepare the hydrocracking catalyst. The hydrocracking catalyst prepared according to the invention has a higher diesel liquid yield.Type: GrantFiled: October 11, 2018Date of Patent: June 14, 2022Assignees: SINOCHEM ENERGY CO., LTD., SINOCHEM QUANZHOU PETROCHEMICAL CO., LTD., SINOCHEM QUANZHOU ENERGY TECHNOLOGY CO. LTDInventors: Changkun Liu, Wenqing Fan, Jintian Wu, Li Zhang
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Patent number: 11078223Abstract: The present invention discloses a composite phosphorus flame retardant comprising cyclic organophosphate with multiple DOPO moieties, and a manufacturing method thereof. The composite structure phosphorus flame retardant has a structural formula comprising at least one organophosphate and at least two DOPO cyclic organophosphates. The method comprises: mixing the DOPO with a polyhydroxy alkane or a hydrocarbon substituent, wherein the polyhydroxy alkane has at least three hydroxy groups, and the hydrocarbon substituent has a chain with at least three carbon atoms; heating the mixture to 195-210° C. and reacting for 14-17 hours in the presence of a protective gas, and then cooling to room temperature; adding a phosphorus oxohalide or an incompletely esterified phosphorus oxohalide; and heating to 55-65° C. and reacting for 1.5-3 hours, then cooling to room temperature to obtain the product.Type: GrantFiled: July 5, 2016Date of Patent: August 3, 2021Inventors: Changkun Liu, Hongliang Zheng
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Publication number: 20210205801Abstract: This invention discloses a preparation method of a hydrocracking catalyst. According to the method, a new functional group is modified through chemical bonds on the surface of a traditionally prepared inorganic carrier, and a VIB group metal element and a VIIIB metal element are then loaded on the carrier to prepare the hydrocracking catalyst. The hydrocracking catalyst prepared according to the invention has a higher diesel liquid yield.Type: ApplicationFiled: October 11, 2018Publication date: July 8, 2021Applicant: FU ZHOU UNIVERSITYInventors: Changkun LIU, Wenqing FAN, Jintian WU, Li ZHANG
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Publication number: 20200361971Abstract: The present invention discloses a composite phosphorus flame retardant comprising cyclic organophosphate with multiple DOPO moieties, and a manufacturing method thereof. The composite structure phosphorus flame retardant has a structural formula comprising at least one organophosphate and at least two DOPO cyclic organophosphates. The method comprises: mixing the DOPO with a polyhydroxy alkane or a hydrocarbon substituent, wherein the polyhydroxy alkane has at least three hydroxy groups, and the hydrocarbon substituent has a chain with at least three carbon atoms; heating the mixture to 195-210° C. and reacting for 14-17 hours in the presence of a protective gas, and then cooling to room temperature; adding a phosphorus oxohalide or an incompletely esterified phosphorus oxohalide; and heating to 55-65° C. and reacting for 1.5-3 hours, then cooling to room temperature to obtain the product.Type: ApplicationFiled: July 5, 2016Publication date: November 19, 2020Applicant: HUAIAN LINGCHUANG LEADER NEW MATERIALS CO., LTD.Inventors: Changkun LIU, Hongliang ZHENG
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Patent number: 10420526Abstract: A method for optimizing CT scanning parameter is disclosed. A target group may be generated from a plurality of reference information samples. Each of the reference information samples may include subject information, information indicating a scanning protocol, one or more scanning parameter values and information indicating reconstructed image quality; the target group can consist of one or more reference information samples with the same subject information and the same scanning protocol. A scanning parameter optimization may be performed according to reconstructed image qualities and scanning parameter values of reference information samples in the target group, so as to acquire a target scanning parameter value of the target group. And according to the target scanning parameter value, a reference X-ray irradiation dose corresponding to the scanning protocol and the subject information of the target group may be determined.Type: GrantFiled: December 31, 2015Date of Patent: September 24, 2019Assignee: SHENYANG NEUSOFT MEDICAL SYSTEMS CO., LTD.Inventors: Shanshan Lou, Dan Lv, Ling Pang, Changkun Liu
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Publication number: 20190132593Abstract: A method and device for processing CT data in a CT system are provided. According to an example of the method, when an upper limit of a data transmission bandwidth of a CT machine is determined, an amount of scan data collected per unit time by the CT machine may be taken as a data acquisition amount per unit time and a first ratio of the data acquisition amount per unit time to the upper limit of the data transmission bandwidth may be determined. In this way, a compression strategy and a decompression strategy may be determined according to the first ratio.Type: ApplicationFiled: October 30, 2018Publication date: May 2, 2019Inventors: Shanshan LOU, Changkun LIU
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Patent number: 9993215Abstract: A method and system for CT image correction are provided. Contour data of a scanned subject can be obtained, and a shape image of the scanned subject can be reconstructed according to the contour data, wherein the contour data of the scanned subject can be obtained by scanning the scanned subject through a piece of visual equipment. Original CT projection data of the scanned subject can be obtained, and a CT image can be reconstructed according to the original CT projection data. For determining a supervision field image, image matching can be performed between the shape image and the CT image of the scanned subject. Supervision field projection data can be obtained, and the supervision field projection data can be used to correct the CT image.Type: GrantFiled: November 25, 2015Date of Patent: June 12, 2018Assignee: SHENYANG NEUSOFT MEDICAL SYSTEMS CO., LTD.Inventors: Shanshan Lou, Changkun Liu, Hongbo Wang
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Patent number: 9795349Abstract: A method for setting a scanning protocol and an apparatus thereof are provided. The method includes: creating a plain film positioning image; receiving a point or a line or a region of interest on the plain film positioning image input by an operator; generating a region to be matched, based on the point or the line or the region of interest; determining whether there is pre-stored reference image having a matching degree greater than a preset threshold by comparing pre-stored reference images with the region to be matched; obtaining a reference image in the case that the reference image has a matching degree greater than the preset threshold; selecting a scanning protocol corresponding to the reference image based on a preset correspondence between reference images and scanning protocols; and completing a setting of the scanning protocol in the case that there is the scanning protocol corresponding to the reference image.Type: GrantFiled: July 14, 2015Date of Patent: October 24, 2017Assignee: SHENYANG NEUSOFT MEDICAL SYSTEMS CO., LTD.Inventors: Shanshan Lou, Changkun Liu
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Publication number: 20160183905Abstract: A method for optimizing CT scanning parameter is disclosed. A target group may be generated from a plurality of reference information samples. Each of the reference information samples may include subject information, information indicating a scanning protocol, one or more scanning parameter values and information indicating reconstructed image quality; the target group can consist of one or more reference information samples with the same subject information and the same scanning protocol. A scanning parameter optimization may be performed according to reconstructed image qualities and scanning parameter values of reference information samples in the target group, so as to acquire a target scanning parameter value of the target group. And according to the target scanning parameter value, a reference X-ray irradiation dose corresponding to the scanning protocol and the subject information of the target group may be determined.Type: ApplicationFiled: December 31, 2015Publication date: June 30, 2016Applicant: Shenyang Neusoft Medical Systems Co., Ltd.Inventors: Shanshan Lou, Dan Lv, Ling Pang, Changkun Liu
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Publication number: 20160143604Abstract: A method and system for CT image correction are provided. Contour data of a scanned subject can be obtained, and a shape image of the scanned subject can be reconstructed according to the contour data, wherein the contour data of the scanned subject can be obtained by scanning the scanned subject through a piece of visual equipment. Original CT projection data of the scanned subject can be obtained, and a CT image can be reconstructed according to the original CT projection data. For determining a supervision field image, image matching can be performed between the shape image and the CT image of the scanned subject. Supervision field projection data can be obtained, and the supervision field projection data can be used to correct the CT image.Type: ApplicationFiled: November 25, 2015Publication date: May 26, 2016Inventors: Shanshan LOU, Changkun LIU, Hongbo WANG
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Publication number: 20160007942Abstract: A method for setting a scanning protocol and an apparatus thereof are provided. The method includes: creating a plain film positioning image; receiving a point or a line or a region of interest on the plain film positioning image input by an operator; generating a region to be matched, based on the point or the line or the region of interest; determining whether there is pre-stored reference image having a matching degree greater than a preset threshold by comparing pre-stored reference images with the region to be matched; obtaining a reference image in the case that the reference image has a matching degree greater than the preset threshold; selecting a scanning protocol corresponding to the reference image based on a preset correspondence between reference images and scanning protocols; and completing a setting of the scanning protocol in the case that there is the scanning protocol corresponding to the reference image.Type: ApplicationFiled: July 14, 2015Publication date: January 14, 2016Inventors: Shanshan Lou, Changkun LIU
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Patent number: 8225641Abstract: A self-cleaning humidity sensor based on Mg2+/Na+-doped TiO2 nanofiber mats is provided. Examples show the response and recovery characteristic curves for ten circles with the RH changing from 11% to 95%. The nanofibers are manufactured by mixing together a metal salt comprising titanium, a magnesium compound, a sodium compound, and a high molecular weight material to form a mixture, electrospinning the mixture to form composite nanofibers, and calcining the composite nanofibers to yield a TiO2 nanofiber material doped with magnesium and sodium.Type: GrantFiled: August 20, 2009Date of Patent: July 24, 2012Assignee: Headwaters Technology Innovation, LLCInventors: Ce Wang, Hongnan Zhang, Zhenyu Li, Wei Zheng, Wei Wang, Changkun Liu, Bing Zhou
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Patent number: 8133637Abstract: The fuel cells include electrode membrane assemblies having a nanoparticle catalyst supported on carbon nanorings. The carbon nanorings are formed from one or more carbon layers that form a wall that defines a generally annular nanostructure having a hole. The length of the nanoring is less than or about equal to the outer diameter thereof. The nanorings exhibit high surface area, high porosity, high graphitization, and/or facilitate mass transfer and electron transfer in fuel cell reactions.Type: GrantFiled: October 6, 2005Date of Patent: March 13, 2012Assignee: Headwaters Technology Innovation, LLCInventors: Gongquan Sun, Shuihua Tang, Shiguo Sun, Qin Xin, Changkun Liu, Bing Zhou
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Patent number: 8097229Abstract: Inorganic oxide substrates are functionalized with silicon-free organic functionalizing agents. The organic functionalizing agent has a bonding functional group for bonding to the substrate and a functionalizing moiety that is not bonded to the substrate for imparting a desired functionality to the substrate. The functionalized inorganic oxide substrates are manufactured by selecting a functionalizing agent and reaction conditions that allows the bonding functional group to bond to the inorganic material while leaving the functionalizing moiety available for providing the desired functionality. The functionalized inorganic oxides can be used as filler materials in polymers or to manufacture a supported nanoparticle catalyst.Type: GrantFiled: January 17, 2006Date of Patent: January 17, 2012Assignee: Headwaters Technology Innovation, LLCInventors: Bing Zhou, Changkun Liu, Clementine Reyes
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Patent number: 7887771Abstract: Methods for manufacturing carbon nanostructures include 1) forming intermediate carbon nanostructures by polymerizing a carbon precursor in the presence of templating nanoparticles, 2) carbonizing the intermediate carbon nanostructures to form an intermediate composite nanostructure, and 3) removing the templating nanoparticles from the intermediate composite nanostructure to form carbon nanorings. The carbon nanorings manufactured using the foregoing steps have one or more carbon layers forming a wall that defines a generally annular nanostructure having a hole. The length of the nanoring is less than or about equal to the outer diameter thereof. The carbon nanostructures are well-suited for use as a fuel cell catalyst support. The carbon nanostructures exhibit high surface area, high porosity, high graphitization, and facilitate mass transfer and electron transfer in fuel cell reactions.Type: GrantFiled: October 5, 2006Date of Patent: February 15, 2011Assignees: Headwaters Technology Innovation, LLC, Dalian InstituteInventors: Gongquan Sun, Shuihua Tang, Shiguo Sun, Qin Xin, Changkun Liu, Bing Zhou
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Patent number: 7772154Abstract: Organic ligands that contain at least one aryl group are immobilized on a solid support. The organic ligands are of the type used to form a catalyst complex suitable for carrying out a catalytic reaction, preferably an asymmetric reaction. To immobilize the organic ligands, a tethering group is bonded to the ligand using, for example, a Friedel-Crafts acylation or alkylation reaction. The immobilization of the organic ligand can be carried out using a single reaction with the organic ligand.Type: GrantFiled: February 20, 2009Date of Patent: August 10, 2010Assignee: Headwaters Technology Innovation, LLCInventors: Bing Zhou, Changkun Liu
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Publication number: 20100135893Abstract: Methods for manufacturing carbon nanostructures include 1) forming intermediate carbon nanostructures by polymerizing a carbon precursor in the presence of templating nanoparticles, 2) carbonizing the intermediate carbon nanostructures to form an intermediate composite nanostructure, and 3) removing the templating nanoparticles from the intermediate composite nanostructure to form carbon nanorings. The carbon nanorings manufactured using the foregoing steps have one or more carbon layers forming a wall that defines a generally annular nanostructure having a hole. The length of the nanoring is less than or about equal to the outer diameter thereof. The carbon nanostructures are well-suited for use as a fuel cell catalyst support. The carbon nanostructures exhibit high surface area, high porosity, high graphitization, and facilitate mass transfer and electron transfer in fuel cell reactions.Type: ApplicationFiled: October 5, 2006Publication date: June 3, 2010Applicants: HEADWATERS NANOKINETIX, INC., DALIAN INSTITUTEInventors: Gongquan Sun, Shuihua Tang, Shiguo Sun, Qin Xin, Changkun Liu, Bing Zhou
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Publication number: 20100125035Abstract: Methods for manufacturing carbon nanostructures include: 1) forming a plurality of catalytic templating particles using a plurality of dispersing agent molecules; 2) forming an intermediate carbon nanostructure by polymerizing a carbon precursor in the presence of the plurality of templating nanoparticles; 3) carbonizing the intermediate carbon nanostructure to form a composite nanostructure; and 4) removing the templating nanoparticles from the composite nanostructure to yield the carbon nanostructures. The carbon nanostructures are well-suited for use as a catalyst support. The carbon nanostructures exhibit high surface area, high porosity, and high graphitization. Carbon nanostructures according to the invention can be used as a substitute for more expensive and likely more fragile carbon nanotubes.Type: ApplicationFiled: January 26, 2010Publication date: May 20, 2010Applicant: Headwaters Technology Innovation, LLCInventors: Cheng Zhang, Martin Fransson, Changkun Liu, Bing Zhou
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Patent number: 7718155Abstract: Methods for manufacturing carbon nanostructures include: 1) forming a plurality of catalytic templating particles using a plurality of dispersing agent molecules; 2) forming an intermediate carbon nanostructure by polymerizing a carbon precursor in the presence of the plurality of templating nanoparticles; 3) carbonizing the intermediate carbon nanostructure to form a composite nanostructure; and 4) removing the templating nanoparticles from the composite nanostructure to yield the carbon nanostructures. The carbon nanostructures are well-suited for use as a catalyst support. The carbon nanostructures exhibit high surface area, high porosity, and high graphitization. Carbon nanostructures according to the invention can be used as a substitute for more expensive and likely more fragile carbon nanotubes.Type: GrantFiled: October 5, 2006Date of Patent: May 18, 2010Assignee: Headwaters Technology Innovation, LLCInventors: Cheng Zhang, Martin Fransson, Changkun Liu, Bing Zhou