Patents by Inventor Liqun Yu
Liqun Yu 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: 11295099Abstract: A method for reading ultrahigh frequency RFID (Radio Frequency Identification) tags is provided, wherein: an ultrahigh frequency RFID scanning system includes an ultrahigh frequency RFID reader and an antenna group; antennas are distributed around a scanned object; the RFID tags are in the scanned object; the ultrahigh frequency RFID scanning system continuously scans the scanned object, till no new data is added to a scan set A, and then counting is started; if no new data is added to the scan set A for N consecutive scan cycles, it is considered that the ultrahigh frequency RFID scanning system has read all the RFID tags in the scanned object. The present invention overcomes the problem that neither the setting of “reading time” nor the setting of “number of times of reading” can determine whether the ultrahigh frequency RFID scanning system has actually read all the RFID tags.Type: GrantFiled: July 22, 2019Date of Patent: April 5, 2022Assignee: WUXI HYESOFT SOFTWARE TECHNOLOGY CO., LTD.Inventor: Liqun Yu
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Publication number: 20220004726Abstract: A method for reading ultrahigh frequency RFID (Radio Frequency Identification) tags is provided, wherein: an ultrahigh frequency RFID scanning system includes an ultrahigh frequency RFID reader (1) and an antenna group; antennas (2) are distributed around a scanned object (4); the RFID tags are in the scanned object (4); the ultrahigh frequency RFID scanning system continuously scans the scanned object (4), till no new data is added to a scan set A, and then counting is started; if no new data is added to the scan set A for N consecutive scan cycles, it is considered that the ultrahigh frequency RFID scanning system has read all the RFID tags in the scanned object (4). The present invention overcomes the problem that neither the setting of “reading time” nor the setting of “number of times of reading” can determine whether the ultrahigh frequency RFID scanning system has actually read all the RFID tags.Type: ApplicationFiled: July 22, 2019Publication date: January 6, 2022Inventor: Liqun Yu
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Publication number: 20170042220Abstract: Filters and smoking articles include sodium bicarbonate-treated fibers and activated carbon capable of selectively removing one or more selected constituents from mainstream smoke. Methods for making cigarette filters and cigarettes using the sodium bicarbonate-treated fibers and activated carbon, and methods for treating mainstream smoke comprising the sodium bicarbonate-treated fibers and activated carbon are also provided.Type: ApplicationFiled: October 31, 2016Publication date: February 16, 2017Inventors: Lixin Xue, Liqun Yu, Joel Schendel
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Patent number: 9491971Abstract: Filters and smoking articles include sodium bicarbonate-treated fibers and activated carbon capable of selectively removing one or more selected constituents from mainstream smoke. Methods for making cigarette filters and cigarettes using the sodium bicarbonate-treated fibers and activated carbon, and methods for treating mainstream smoke comprising the sodium bicarbonate-treated fibers and activated carbon are also provided.Type: GrantFiled: December 11, 2006Date of Patent: November 15, 2016Assignee: Philip Morris USA Inc.Inventors: Lixin Xue, Liqun Yu, Joel Schendel
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Patent number: 7914622Abstract: A smoking article includes a cylinder of smoking material having at least one hollow tube having a heat conductive wall within the cylinder of smoking material and a filter system attached to the cylinder of smoking material. The filter system includes an adsorbent material therein. The at least one hollow tube extends from within the cylinder of smoking material through the adsorbent material. At least one flavorant material is retained within the at least one hollow tube, and upon exposure to heat from the heat conductive wall of the hollow tube the flavorant material releases a flavorant.Type: GrantFiled: December 19, 2006Date of Patent: March 29, 2011Assignee: Philip Morris USA Inc.Inventors: Lixin Xue, Liqun Yu, Shuzhong Zhuang, Georgios D. Karles, Kent B. Koller
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Patent number: 7767134Abstract: Disclosed is a method for forming an article with template shaped channels by (a) mixing a precursor with a fibrous template, (b) forming the mixture into a pre-determined shape, (c) curing the mixture to form a precursor composite, (d) carbonizing the precursor composite, and (e) decomposing the fibrous template to yield a shaped carbon article with template shaped channels.Type: GrantFiled: June 29, 2005Date of Patent: August 3, 2010Assignee: Philip Morris USA Inc.Inventors: Lixin Luke Xue, Shuzhong Zhuang, Liqun Yu, John B. Paine, III
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Publication number: 20100175703Abstract: A process of impregnating fine adsorbent particles such as carbon dust or APS silica gel powder into the micro-cavities of shaped fibers comprises the steps of continuously conveying shaped fibers with micro-cavities to a reservoir of the fine adsorbent particles. The fibers pass through the reservoir to thereby produce relative motion between the fibers and the particles. Additionally, impact forces are created between the shaped fibers and the fine particles to assist in impregnating the particles into the micro-cavities of the fibers. Any excess particles are removed from the fibers outside the reservoir, and subsequently the shaped fibers impregnated with fine adsorbent particles are collected for later use in filter applications such as cigarette filter and air filter applications, for example.Type: ApplicationFiled: March 22, 2010Publication date: July 15, 2010Applicant: Philip Morris USA Inc.Inventors: Lixin Luke Xue, Kent B. Koller, Qiong Gao, Tim Sherwood, Charles E. Thomas, George R. Scott, Liqun Yu
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Publication number: 20100163064Abstract: Disclosed is a method for forming an article with template shaped channels by (a) mixing a precursor with a fibrous template, (b) forming the mixture into a pre-determined shape, (c) curing the mixture to form a precursor composite, (d) carbonizing the precursor composite, and (e) decomposing the fibrous template to yield a shaped carbon article with template shaped channels.Type: ApplicationFiled: March 12, 2010Publication date: July 1, 2010Applicant: Philip Morris USA Inc.Inventors: Lixin Luke Xue, Shuzhong Zhuang, Liqun Yu, John B. Paine, III
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Patent number: 7552735Abstract: A cigarette filter for removing gas phase constituents from mainstream cigarette smoke as the smoke is drawn through the filter primarily comprises an activated carbon fiber filter section including a bundle of activated carbon fibers. Particulate adsorbent materials such as granules, beads or course powders may be dispersed amongst the activated carbon fibers to aid in removal of the gas phase constituents. Additionally, the activated carbon fiber filter section may be used in combination with a separate bed or beds of particulate adsorbent material. In one embodiment, the activated carbon fibers are positioned within a helical groove on the outside of a threaded rod within the activated carbon fiber filter section. Relatively smaller amounts of activated carbon fibers produce the same smoke constituent reduction as larger amounts of particulate adsorbent material.Type: GrantFiled: April 11, 2003Date of Patent: June 30, 2009Assignee: Philip Morris USA Inc.Inventors: Lixin Xue, Jose G. Nepomuceno, Shuzhong Zhuang, Timothy Scott Sherwood, John Bryant Paine, III, Jay A Fournier, Charles Edwin Thomas, Jr., Kent Brian Koller, Liqun Yu
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Publication number: 20070181141Abstract: Filters and smoking articles include sodium bicarbonate-treated fibers and activated carbon capable of selectively removing one or more selected constituents from mainstream smoke. Methods for making cigarette filters and cigarettes using the sodium bicarbonate-treated fibers and activated carbon, and methods for treating mainstream smoke comprising the sodium bicarbonate-treated fibers and activated carbon are also provided.Type: ApplicationFiled: December 11, 2006Publication date: August 9, 2007Applicant: Philip Morris USA Inc.Inventors: Lixin Xue, Liqun Yu, Joel Schendel
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Publication number: 20070181140Abstract: A smoking article includes a cylinder of smoking material having at least one hollow tube having a heat conductive wall within the cylinder of smoking material and a filter system attached to the cylinder of smoking material. The filter system includes an adsorbent material therein. The at least one hollow tube extends from within the cylinder of smoking material through the adsorbent material. At least one flavorant material is retained within the at least one hollow tube, and upon exposure to heat from the heat conductive wall of the hollow tube the flavorant material releases a flavorant.Type: ApplicationFiled: December 19, 2006Publication date: August 9, 2007Applicant: Philip Morris USA IncInventors: Lixin Xue, Liqun Yu, Shuzhong Zhuang, Georgios Karles, Kent Koller
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Publication number: 20070000507Abstract: Disclosed is a carbon fiber with a template derived shape and method for making the same by (a) mixing a precursor with a fibrous template, (b) forming the mixture into a pre-determined shape, (c) curing the mixture to form a precursor composite, (d) carbonizing the precursor composite, and (e) decomposing the fibrous template.Type: ApplicationFiled: June 29, 2005Publication date: January 4, 2007Inventors: Lixin Xue, Shuzhong Zhuang, Liqun Yu, John Paine
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Publication number: 20070000508Abstract: Disclosed is a method for forming an article with template shaped channels by (a) mixing a precursor with a fibrous template, (b) forming the mixture into a pre-determined shape, (c) curing the mixture to form a precursor composite, (d) carbonizing the precursor composite, and (e) decomposing the fibrous template to yield a shaped carbon article with template shaped channels.Type: ApplicationFiled: June 29, 2005Publication date: January 4, 2007Inventors: Lixin Xue, Shuzhong Zhuang, Liqun Yu, John Paine
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Publication number: 20050161053Abstract: A process of impregnating fine adsorbent particles such as carbon dust or APS silica gel powder into the micro-cavities of shaped fibers comprises the steps of continuously conveying shaped fibers with micro-cavities to a reservoir of the fine adsorbent particles. The fibers pass through the reservoir to thereby produce relative motion between the fibers and the particles. Additionally, impact forces are created between the shaped fibers and the fine particles to assist in impregnating the particles into the micro-cavities of the fibers. Any excess particles are removed from the fibers outside the reservoir, and subsequently the shaped fibers impregnated with fine adsorbent particles are collected for later use in filter applications such as cigarette filter and air filter applications, for example.Type: ApplicationFiled: March 18, 2005Publication date: July 28, 2005Inventors: Lixin Xue, Kent Koller, Qiong Gao, Tim Sherwood, Charles Thomas, George Scott, Liqun Yu
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Patent number: 6913784Abstract: A process of impregnating fine adsorbent particles such as carbon dust or APS silica gel powder into the micro-cavities of shaped fibers comprises the steps of continuously conveying shaped fibers with micro-cavities to a reservoir of the fine adsorbent particles. The fibers pass through the reservoir to thereby produce relative motion between the fibers and the particles. Additionally, impact forces are created between the shaped fibers and the fine particles to assist in impregnating the particles into the micro-cavities of the fibers. Any excess particles are removed from the fibers outside the reservoir, and subsequently the shaped fibers impregnated with fine adsorbent particles are collected for later use in filter applications such as cigarette filter and air filter applications, for example.Type: GrantFiled: November 14, 2002Date of Patent: July 5, 2005Assignee: Philip Morris USA Inc.Inventors: Lixin Luke Xue, Kent B. Koller, Qiong Gao, Tim Sherwood, Charles E. Thomas, George R. Scott, Liqun Yu
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Patent number: 6863074Abstract: Cigarette filters, methods for making cigarettes and methods for smoking cigarettes are provided, which involve the use of an unfunctionalized porous polyaromatic resins, which is capable of removing at least some of at least one gas phase constituent from mainstream smoke through sorption. The unfunctionalized porous polyaromatic resin may be a polymerization product of non-polar styrene and divinyl benzene. Various gas phase constituent can be removed from mainstream tobacco smoke, such as dienes, furans, pyrroles, aromatics and ketones, for example. The cigarette filters and cigarettes can provide low resistance-to-draw and/or high total particulate matter delivery. Additionally, the unfunctionalized porous polyaromatic resin may further include flavorant(s).Type: GrantFiled: August 30, 2002Date of Patent: March 8, 2005Assignee: Philip Morris USA Inc.Inventors: Lixin Xue, Charles Edwin Thomas, Jr., Liqun Yu, Kent B. Koller
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Publication number: 20040040565Abstract: Cigarette filters, methods for making cigarettes and methods for smoking cigarettes are provided, which involve the use of an unfunctionalized porous polyaromatic resins, which is capable of removing at least some of at least one gas phase constituent from mainstream smoke through sorption. The unfunctionalized porous polyaromatic resin may be a polymerization product of non-polar styrene and divinyl benzene. Various gas phase constituent can be removed from mainstream tobacco smoke, such as dienes, furans, pyrroles, aromatics and ketones, for example. The cigarette filters and cigarettes can provide low resistance-to-draw and/or high total particulate matter delivery. Additionally, the unfunctionalized porous polyaromatic resin may further include flavorant(s).Type: ApplicationFiled: August 30, 2002Publication date: March 4, 2004Inventors: Lixin Xue, Charles Edwin Thomas, Liqun Yu, Kent B. Koller
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Publication number: 20030200973Abstract: A cigarette filter for removing gas phase constituents from mainstream cigarette smoke as the smoke is drawn through the filter primarily comprises an activated carbon fiber filter section including a bundle of activated carbon fibers. Particulate adsorbent materials such as granules, beads or course powders may be dispersed amongst the activated carbon fibers to aid in removal of the gas phase constituents. Additionally, the activated carbon fiber filter section may be used in combination with a separate bed or beds of particulate adsorbent material. In one embodiment, the activated carbon fibers are positioned within a helical groove on the outside of a threaded rod within the activated carbon fiber filter section. Relatively smaller amounts of activated carbon fibers produce the same smoke constituent reduction as larger amounts of particulate adsorbent material.Type: ApplicationFiled: April 11, 2003Publication date: October 30, 2003Inventors: Lixin Xue, Jose G. Nepomuceno, Shuzhong Zhuang, Timothy Scott Sherwood, John Bryant Paine, Jay A. Fournier, Charles Edwin Thomas, Kent Brian Koller, Liqun Yu
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Publication number: 20030168070Abstract: A process of impregnating fine adsorbent particles such as carbon dust or APS silica gel powder into the micro-cavities of shaped fibers comprises the steps of continuously conveying shaped fibers with micro-cavities to a reservoir of the fine adsorbent particles. The fibers pass through the reservoir to thereby produce relative motion between the fibers and the particles. Additionally, impact forces are created between the shaped fibers and the fine particles to assist in impregnating the particles into the micro-cavities of the fibers. Any excess particles are removed from the fibers outside the reservoir, and subsequently the shaped fibers impregnated with fine adsorbent particles are collected for later use in filter applications such as cigarette filter and air filter applications, for example.Type: ApplicationFiled: November 14, 2002Publication date: September 11, 2003Inventors: Lixin Luke Xue, Kent B. Koller, Qiong Gao, Tim Sherwood, Charles E. Thomas, George R. Scott, Liqun Yu