Patents by Inventor Dongxia Liu
Dongxia 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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Patent number: 10618003Abstract: Exhaust gas catalysts are disclosed. One exhaust gas catalyst comprises a noble metal and a molecular sieve, and has an infrared spectrum having a characteristic absorption peak from 750 cm?1 to 1050 cm?1 in addition to the absorption peaks for the molecular sieve itself. The exhaust gas catalyst also comprises a noble metal and a molecular sieve, having greater than 5 percent of the noble metal amount located inside pores of the molecular sieve. The exhaust gas catalyst also comprises a first and second molecular sieve catalyst. The first molecular sieve catalyst comprises a first noble metal and a first molecular sieve, and the second molecular sieve catalyst comprises a second noble metal and a second molecular sieve. The first and second molecular sieves are different. The invention also includes exhaust systems comprising the exhaust gas catalysts, and a method for treating exhaust gas utilizing the exhaust gas catalysts.Type: GrantFiled: December 8, 2014Date of Patent: April 14, 2020Assignee: Johnson Matthey Public Limited CompanyInventors: Raj Rao Rajaram, Fiona-Mairead McKenna, Hai-Ying Chen, Dongxia Liu
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Patent number: 10525407Abstract: Non-oxidative direct methane conversion (NDMC) to value-added products, such as H2, C2 hydrocarbons, and aromatics, occurs within a reactor heated to an elevated temperature. The reactor can have a first volume, where a feed gas including methane is provided, separated from a second volume, where a sweep gas is provided, by a dense thin film membrane supported on a porous wall. The thin film membrane is a mixed ionic-electronic permeable membrane that allows H2 generated in the first volume to be transported to the second volume for removal by (or reaction with) the sweep gas. A catalyst can be provided in or adjacent to the first volume. For example, the catalyst can be a metal doped quartz material (e.g., Fe(c)SiO2) or a metal/zeolite material (e.g., Mo/ZSM5). Methane conversion and/or product selectivity in the reactor can be manipulated by control of gas flow rates, reaction temperatures, and/or feed and sweep gas compositions.Type: GrantFiled: October 6, 2016Date of Patent: January 7, 2020Assignee: University of Maryland, College ParkInventors: Eric D. Wachsman, Dongxia Liu
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Publication number: 20190001268Abstract: A catalyst article including a substrate with an inlet side and an outlet side, a first zone and a second zone, where the first zone includes a passive NOx adsorber (PNA), and an ammonia slip catalyst (ASC) comprising a platinum group metal on a support and a first SCR catalyst; where the second zone includes a catalyst selected from the group consisting of a diesel oxidation catalyst (DOC) and a diesel exotherm catalyst (DEC); and where the first zone is located upstream of the second zone. The first zone may include a bottom layer with a blend of: (1) the platinum group metal on a support and (2) the first SCR catalyst; and a top layer with a second SCR catalyst, the top layer located over the bottom layer.Type: ApplicationFiled: March 29, 2018Publication date: January 3, 2019Inventors: Hai-Ying CHEN, Joseph Michael FEDEYKO, Dongxia LIU, Jing LU
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Publication number: 20180296974Abstract: Non-oxidative direct methane conversion (NDMC) to value-added products, such as H2, C2 hydrocarbons, and aromatics, occurs within a reactor heated to an elevated temperature. The reactor can have a first volume, where a feed gas including methane is provided, separated from a second volume, where a sweep gas is provided, by a dense thin film membrane supported on a porous wall. The thin film membrane is a mixed ionic-electronic permeable membrane that allows H2 generated in the first volume to be transported to the second volume for removal by (or reaction with) the sweep gas. A catalyst can be provided in or adjacent to the first volume. For example, the catalyst can be a metal doped quartz material (e.g., Fe(c)SiO2) or a metal/zeolite material (e.g., Mo/ZSM5). Methane conversion and/or product selectivity in the reactor can be manipulated by control of gas flow rates, reaction temperatures, and/or feed and sweep gas compositions.Type: ApplicationFiled: October 6, 2016Publication date: October 18, 2018Inventors: Eric D. WACHSMAN, Dongxia LIU
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Publication number: 20180283250Abstract: A catalyst article including a substrate with an inlet side and an outlet side, a first zone and a second zone, where the first zone comprises a passive NOx adsorber (PNA) comprising a platinum group metal and a base metal, both on a molecular sieve, and an ammonia slip catalyst (ASC) comprising an oxidation catalyst comprising a platinum group metal on a support, and a first SCR catalyst; where the second zone comprises a catalyst selected from the group consisting of a diesel oxidation catalyst (DOC) and a diesel exotherm catalyst (DEC); and where the first zone is located upstream of the second zone. The first zone may include a bottom layer including a blend of: (1) the oxidation catalyst and (2) the first SCR catalyst; and a top layer including a second SCR catalyst, the top layer located over the bottom layer.Type: ApplicationFiled: March 29, 2018Publication date: October 4, 2018Inventors: Hai-Ying CHEN, John KILMARTIN, Dongxia LIU, Jing LU, Desiree DURAN-MARTIN, Raj RAJARAM
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Patent number: 10005075Abstract: A passive NOx adsorber is disclosed. The passive NOx adsorber is effective to adsorb NOx at or below a low temperature and release the adsorbed NOx at temperatures above the low temperature. The passive NOx adsorber comprises a noble metal and a small pore molecular sieve. The small pore molecular sieve has a maximum ring size of eight tetrahedral atoms. The invention also includes an exhaust system comprising the passive NOx adsorber, and a method for treating exhaust gas from an internal combustion engine utilizing the passive NOx adsorber.Type: GrantFiled: December 8, 2014Date of Patent: June 26, 2018Assignee: Johnson Matthey Public Limited CompanyInventors: Raj Rao Rajaram, Hai-Ying Chen, Dongxia Liu
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Patent number: 9849168Abstract: Disclosed are an attenuated live vaccine against mycoplasmal pneumonia of swine (MPS) and use thereof. In the present invention, pathological lung tissues of swine having typical Mycoplasma hyopneumoniae (Mhp) infection and no obvious other pathogenic infections are screened, and subcultured 100 generations in lungs of newborn rabbits; then, Mhp strains are isolated and serially subcultured in a medium; and the Mhp strain AN306 is obtained by screening a plurality of strains, which is deposited with an accession number: CCTCC NO. M2012431. Also disclosed is a live vaccine formulation against MPS prepared on the basis of the attenuated strain and comprising live attenuated strain, a pharmaceutically acceptable carrier or excipient, and optionally an adjuvant and immunogens of other pathogens.Type: GrantFiled: January 26, 2014Date of Patent: December 26, 2017Assignee: JIANGSU ACADEMY OF AGRICULTURAL SCIENCESInventors: Guoqinq Shao, Qiyan Xiong, Maojun Liu, Zhixin Feng, Yanna Wei, Haiyan Wang, Fangfang Bai, Yuan Gan, Li Wang, Daohua Zhang, Dongxia Liu, Lizhong Hua, Yuzi Wu, Yun Bai, Zhanwei Wang
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Publication number: 20160346372Abstract: Disclosed are an attenuated live vaccine against mycoplasmal pneumonia of swine (MPS) and use thereof. In the present invention, pathological lung tissues of swine having typical Mycoplasma hyopneumoniae (Mhp) infection and no obvious other pathogenic infections are screened, and subcultured 100 generations in lungs of newborn rabbits; then, Mhp strains are isolated and serially subcultured in a medium; and the Mhp strain AN306 is obtained by screening a plurality of strains, which is deposited with an accession number: CCTCC NO. M2014176. Also disclosed is a live vaccine formulation against MPS prepared on the basis of the attenuated strain and comprising live attenuated strain, a pharmaceutically acceptable carrier or excipient, and optionally an adjuvant and immunogens of other pathogens.Type: ApplicationFiled: January 26, 2014Publication date: December 1, 2016Applicant: JIANGSU ACADEMY OF AGRICULTURAL SCIENCESInventors: Guoqinq SHAO, Qiyan XIONG, Maojun LIU, Zhixin FENG, Yanna WEI, Haiyan WANG, Fangfang BAI, Yuan GAN, Li WANG, Daohua ZHANG, Dongxia LIU, Lizhong HUA, Yuzi WU, Yun BAI, Zhanwei WANG
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Patent number: 9451020Abstract: A method and system of distributed communication of independent autonomous vehicles to provide redundancy and performance are disclosed. In one embodiment, a set of autonomous vehicles operates in a geographically proximate area through which peer-to-peer communication sessions are established between nearby ones of the set of autonomous vehicles through an ad-hoc network based on a present geo-spatial location of each one of the set of autonomous vehicles in communication proximity to preferred adjacent ones of the set of autonomous vehicles. A central server directly coupled to each of the set of autonomous vehicles establishes centralized communication paths with each of the set of autonomous vehicles through a wide area network. The centralized server processes a communication from adjacent ones of the set of autonomous vehicles when an error condition is detected in an operational mode of a non-functional vehicle that has lost communication with the central server.Type: GrantFiled: July 18, 2014Date of Patent: September 20, 2016Assignee: LEGALFORCE, INC.Inventors: Dongxia Liu, Hairong Lei, Raj Abhyanker
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Publication number: 20160021178Abstract: A method and system of distributed communication of independent autonomous vehicles to provide redundancy and performance are disclosed. In one embodiment, a set of autonomous vehicles operates in a geographically proximate area through which peer-to-peer communication sessions are established between nearby ones of the set of autonomous vehicles through an ad-hoc network based on a present geo-spatial location of each one of the set of autonomous vehicles in communication proximity to preferred adjacent ones of the set of autonomous vehicles. A central server directly coupled to each of the set of autonomous vehicles establishes centralized communication paths with each of the set of autonomous vehicles through a wide area network. The centralized server processes a communication from adjacent ones of the set of autonomous vehicles when an error condition is detected in an operational mode of a non-functional vehicle that has lost communication with the central server.Type: ApplicationFiled: July 18, 2014Publication date: January 21, 2016Inventors: Dongxia Liu, Hairong Lei, Raj Abhyanker
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Publication number: 20150157982Abstract: Exhaust gas catalysts are disclosed. One exhaust gas catalyst comprises a noble metal and a molecular sieve, and has an infrared spectrum having a characteristic absorption peak from 750 cm?1 to 1050 cm?1 in addition to the absorption peaks for the molecular sieve itself. The exhaust gas catalyst also comprises a noble metal and a molecular sieve, having greater than 5 percent of the noble metal amount located inside pores of the molecular sieve. The exhaust gas catalyst also comprises a first and second molecular sieve catalyst. The first molecular sieve catalyst comprises a first noble metal and a first molecular sieve, and the second molecular sieve catalyst comprises a second noble metal and a second molecular sieve. The first and second molecular sieves are different. The invention also includes exhaust systems comprising the exhaust gas catalysts, and a method for treating exhaust gas utilizing the exhaust gas catalysts.Type: ApplicationFiled: December 8, 2014Publication date: June 11, 2015Inventors: Raj Rao RAJARAM, Fiona-Mairead MCKENNA, Hai-Ying CHEN, Dongxia LIU
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Publication number: 20150158023Abstract: A cold start catalyst is disclosed. The cold start catalyst is effective to adsorb NOx and hydrocarbons (HC) at or below a low temperature and to covert and release the adsorbed NOx and HC at temperatures above the low temperature. The cold start catalyst comprises a molecular sieve catalyst and a supported platinum group metal catalyst. The molecular sieve catalyst consists essentially of a noble metal and a molecular sieve. The supported platinum group metal catalyst comprises one or more platinum group metals and one or more inorganic oxide carriers. The invention also includes an exhaust system comprising the cold start catalyst, and a method for treating exhaust gas from an internal combustion engine utilizing the cold start catalyst.Type: ApplicationFiled: December 8, 2014Publication date: June 11, 2015Inventors: Raj Rao RAJARAM, Hai-Ying CHEN, Dongxia LIU
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Publication number: 20150158019Abstract: A passive NOx adsorber is disclosed. The passive NOx adsorber is effective to adsorb NOx at or below a low temperature and release the adsorbed NOx at temperatures above the low temperature. The passive NOx adsorber comprises a noble metal and a small pore molecular sieve. The small pore molecular sieve has a maximum ring size of eight tetrahedral atoms. The invention also includes an exhaust system comprising the passive NOx adsorber, and a method for treating exhaust gas from an internal combustion engine utilizing the passive NOx adsorber.Type: ApplicationFiled: December 8, 2014Publication date: June 11, 2015Inventors: Raj Rao RAJARAM, Hai-Ying CHEN, Dongxia LIU
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Patent number: 8129072Abstract: A c-axis-oriented HAP thin film synthesized by seeded growth on a palladium hydrogen membrane substrate. An exemplary synthetic process includes electrochemical seeding on the substrate, and secondary and tertiary hydrothermal treatments under conditions that favor growth along c-axes and a-axes in sequence. By adjusting corresponding synthetic conditions, an HAP this film can be grown to a controllable thickness with a dense coverage on the underlying substrate. The thin films have relatively high proton conductivity under hydrogen atmosphere and high temperature conditions. The c-axis oriented films may be integrated into fuel cells for application in the intermediate temperature range of 200-600° C. The electrochemical-hydrothermal deposition technique may be applied to create other oriented crystal materials having optimized properties, useful for separations and catalysis as well as electronic and electrochemical applications, electrochemical membrane reactors, and in chemical sensors.Type: GrantFiled: April 11, 2011Date of Patent: March 6, 2012Assignee: University of RochesterInventors: Matthew Yates, Dongxia Liu
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Publication number: 20110192727Abstract: A c-axis-oriented HAP thin film synthesized by seeded growth on a palladium hydrogen membrane substrate. An exemplary synthetic process includes electrochemical seeding on the substrate, and secondary and tertiary hydrothermal treatments under conditions that favor growth along c-axes and a-axes in sequence. By adjusting corresponding synthetic conditions, an HAP this film can be grown to a controllable thickness with a dense coverage on the underlying substrate. The thin films have relatively high proton conductivity under hydrogen atmosphere and high temperature conditions. The c-axis oriented films may be integrated into fuel cells for application in the intermediate temperature range of 200-600° C. The electrochemical-hydrothermal deposition technique may be applied to create other oriented crystal materials having optimized properties, useful for separations and catalysis as well as electronic and electrochemical applications, electrochemical membrane reactors, and in chemical sensors.Type: ApplicationFiled: April 11, 2011Publication date: August 11, 2011Applicant: UNIVERSITY OF ROCHESTERInventors: Matthew Yates, Dongxia Liu
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Patent number: 7943269Abstract: A c-axis-oriented HAP thin film synthesized by seeded growth on a palladium hydrogen membrane substrate. An exemplary synthetic process includes electrochemical seeding on the substrate, and secondary and tertiary hydrothermal treatments under conditions that favor growth along c-axes and a-axes in sequence. By adjusting corresponding synthetic conditions, an HAP this film can be grown to a controllable thickness with a dense coverage on the underlying substrate. The thin films have relatively high proton conductivity under hydrogen atmosphere and high temperature conditions. The c-axis oriented films may be integrated into fuel cells for application in the intermediate temperature range of 200-600° C. The electrochemical-hydrothermal deposition technique may be applied to create other oriented crystal materials having optimized properties, useful for separations and catalysis as well as electronic and electrochemical applications, electrochemical membrane reactors, and in chemical sensors.Type: GrantFiled: February 25, 2009Date of Patent: May 17, 2011Assignee: University of RochesterInventors: Matthew Yates, Dongxia Liu
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Publication number: 20110066648Abstract: Simultaneous reservation of brand identity is disclosed. In one embodiment a method to simultaneous reserve online brand identity includes initiating a simultaneous search responsive to a single criteria, creating a uniform search result of available internet property such as trademark names, domain names, and/or social media names, searching availability of the internet property related to single search criteria, retaining ownership of matching internet property, registering the internet property, presenting opportunity to users to challenge ownership of the internet property. In another embodiment, a method may include abandoned trademarks responsive to a single search criteria are automatically registered and semantic analysis is performed on search results from the single search criteria.Type: ApplicationFiled: September 14, 2010Publication date: March 17, 2011Inventors: Raj Vasant Abhyanker, Dongxia Liu
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Publication number: 20100015494Abstract: A c-axis-oriented HAP thin film synthesized by seeded growth on a palladium hydrogen membrane substrate. An exemplary synthetic process includes electrochemical seeding on the substrate, and secondary and tertiary hydrothermal treatments under conditions that favor growth along c-axes and a-axes in sequence. By adjusting corresponding synthetic conditions, an HAP this film can be grown to a controllable thickness with a dense coverage on the underlying substrate. The thin films have relatively high proton conductivity under hydrogen atmosphere and high temperature conditions. The c-axis oriented films may be integrated into fuel cells for application in the intermediate temperature range of 200-600° C. The electrochemical-hydrothermal deposition technique may be applied to create other oriented crystal materials having optimized properties, useful for separations and catalysis as well as electronic and electrochemical applications, electrochemical membrane reactors, and in chemical sensors.Type: ApplicationFiled: February 25, 2009Publication date: January 21, 2010Applicant: University of RochesterInventors: Matthew Yates, Dongxia Liu