Patents by Inventor Fudong Liu
Fudong 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: 11971837Abstract: A processor interface assembly includes: a first interface circuit including a plurality of sub-interface circuits and configured to couple with a plurality of peripheral devices, wherein the plurality of peripheral devices is configured to occupy a pre-determined address space, and the pre-determined address space includes multiple sub-address spaces; and a controller including a register and configured to set a sub-address space occupied by at least one type of peripheral devices among the plurality of peripheral devices based on at least a portion of data stored in the register.Type: GrantFiled: January 13, 2022Date of Patent: April 30, 2024Assignee: PHYTIUM TECHNOLOGY CO., LTD.Inventors: Fudong Liu, Cai Chen, Lizheng Fan, Xiaofan Zhao
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Patent number: 11890608Abstract: Methods for fabricating thermally stable reducible metal oxide catalyst support structures on a base material using a multi-step incipient wetness impregnation (IWI) process are disclosed. For example, reducible metal oxide catalyst support structures having high surface area and high thermal stability may be formed using a multi-step IWI process, where the support structure is generated through high-temperature calcination between IWI steps. The metal or metal oxide catalysts fabricated using the methods are also disclosed. The generation of engineered surface defects on reducible metal oxides using a gas reduction process to serve as anchoring sites for metal or metal oxide catalysts is also disclosed. Generating engineered defects through a gas reduction process may be a relatively low-cost and scalable process suitable for fabricating efficient catalysts using a wide range of materials.Type: GrantFiled: January 19, 2021Date of Patent: February 6, 2024Assignee: University of Central Florida Research Foundation, Inc.Inventors: Fudong Liu, Shaohua Xie
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Patent number: 11816049Abstract: An interrupt request signal conversion system includes an interrupt request signal converter configured to generate one or more converted interrupt request signals based on one or more signals received from one or more peripheral devices, and a signal output terminal configured to send the one or more converted interrupt request signals to an interface module of a processor during operation. Each of the one or more converted interrupt request signals includes a plurality of interrupt identification bits each used to identify, based on a first level and a second level different from the first level, whether a signal received from a corresponding one of the one or more peripheral devices within a predetermined time range includes a peripheral interrupt request signal.Type: GrantFiled: January 13, 2022Date of Patent: November 14, 2023Assignee: PHYTIUM TECHNOLOGY CO., LTD.Inventors: Lizheng Fan, Cai Chen, Fudong Liu, Xiaofan Zhao
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Patent number: 11809350Abstract: A serial interrupt method includes receiving a blank serial interrupt request signal (SerIRQ) and a level signal of a peripheral, based on the blank SerIRQ, generating an indication SerIRQ including an indication interrupt bit (IRQ_n) according to the level signal, and sending the instruction SerIRQ to a processor. The indication IRQ_n identifies the peripheral based on a binary code represented by a first level and a second level.Type: GrantFiled: January 13, 2022Date of Patent: November 7, 2023Assignee: PHYTIUM TECHNOLOGY CO., LTD.Inventors: Xiaofan Zhao, Lizheng Fan, Cai Chen, Fudong Liu
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Patent number: 11801491Abstract: A three-way catalyst for reduced palladium loading is provided. The catalyst includes an inert substrate and a palladium catalyst material coating the substrate. The palladium catalyst material includes a support material formed from one of 10% CeO2/Al2O3, 20% CeO2—Al2O3 (20CeAlOy), 30% CeO2—Al2O3 (30CeAlOy), Al2O3, and MOx-Al2O3, wherein M is one of copper, iron, manganese, titanium, zirconium, magnesium, strontium, and barium. The palladium catalyst material includes a layer of CeO2 material disposed upon the support material, wherein the layer of CeO2 material is dispersed on a surface of the support material. The palladium catalyst material includes an active component including a layer of praseodymium oxide particles dispersed across the surface of the layer of CeO2 material and a layer of palladium particles disposed upon and dispersed across the surface of the layer of CeO2 material at locations each corresponding to a respective location of each of the praseodymium particles.Type: GrantFiled: April 21, 2022Date of Patent: October 31, 2023Assignees: GM GLOBAL TECHNOLOGY OPERATIONS LLC, University of Central Florida Research Foundation, Inc., BASF CorporationInventors: Yuntao Gu, Fudong Liu, Wei Li, Shaohua Xie, Yuejin Li, Xiaolai Zheng
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Publication number: 20230338928Abstract: A three-way catalyst for reduced palladium loading is provided. The catalyst includes an inert substrate and a palladium catalyst material coating the substrate. The palladium catalyst material includes a support material formed from one of 10% CeO2/Al2O3, 20% CeO2—Al2O3 (20CeAlOy), 30% CeO2—Al2O3 (30CeAlOy), Al2O3, and MOx-Al2O3, wherein M is one of copper, iron, manganese, titanium, zirconium, magnesium, strontium, and barium. The palladium catalyst material includes a layer of CeO2 material disposed upon the support material, wherein the layer of CeO2 material is dispersed on a surface of the support material. The palladium catalyst material includes an active component including a layer of praseodymium oxide particles dispersed across the surface of the layer of CeO2 material and a layer of palladium particles disposed upon and dispersed across the surface of the layer of CeO2 material at locations each corresponding to a respective location of each of the praseodymium particles.Type: ApplicationFiled: April 21, 2022Publication date: October 26, 2023Applicants: GM GLOBAL TECHNOLOGY OPERATIONS LLC, University of Central Florida, BASF CorporationInventors: Yuntao Gu, Fudong Liu, Wei Li, Shaohua Xie, Yuejin Li, Xiaolai Zheng
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Patent number: 11772078Abstract: A layered catalyst structure for purifying an exhaust gas stream includes a catalyst support and a palladium catalyst layer including an atomic dispersion of palladium ions electrostatically adsorbed onto an exterior surface of the catalyst support. The catalyst support includes an alumina substrate, a first ceria layer disposed on and extending substantially continuously over the alumina substrate, and a second colloidal ceria layer formed directly on the first ceria layer over the alumina substrate. The palladium catalyst layer is formed on the exterior surface of the catalyst support by applying a palladium-containing precursor solution to the exterior surface of the catalyst support and then heating the catalyst support and the palladium-containing precursor solution. The palladium-containing precursor solution includes a positively charged palladium complex in an aqueous medium and has a pH greater than a point of zero charge of the second colloidal ceria layer.Type: GrantFiled: January 21, 2022Date of Patent: October 3, 2023Assignees: GM GLOBAL TECHNOLOGY OPERATIONS LLC, UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.Inventors: Yuntao Gu, Wei Li, Fudong Liu
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Publication number: 20230234035Abstract: A layered catalyst structure for purifying an exhaust gas stream includes a catalyst support and a palladium catalyst layer including an atomic dispersion of palladium ions electrostatically adsorbed onto an exterior surface of the catalyst support. The catalyst support includes an alumina substrate, a first ceria layer disposed on and extending substantially continuously over the alumina substrate, and a second colloidal ceria layer formed directly on the first ceria layer over the alumina substrate. The palladium catalyst layer is formed on the exterior surface of the catalyst support by applying a palladium-containing precursor solution to the exterior surface of the catalyst support and then heating the catalyst support and the palladium-containing precursor solution. The palladium-containing precursor solution includes a positively charged palladium complex in an aqueous medium and has a pH greater than a point of zero charge of the second colloidal ceria layer.Type: ApplicationFiled: January 21, 2022Publication date: July 27, 2023Inventors: Yuntao GU, Wei LI, Fudong LIU
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Publication number: 20230219069Abstract: The present disclosure provides SCR catalyst compositions capable of reducing nitrogen oxide (NOx) emissions in engine exhaust. The catalyst compositions include a reducible metal oxide support containing ceria, one or more transition metal oxides as a redox promotor; and an oxide of niobium, tungsten, silicon, molybdenum, or a combination thereof as an acidic promotor. The redox promotor and the acid promotor are both supported on the reducible metal oxide support. Further provided are SCR catalyst articles coated with such compositions, processes for preparing such catalyst compositions and articles, an exhaust gas treatment system including such catalyst articles, and methods for reducing NOx in an exhaust gas stream using such catalyst articles and systems.Type: ApplicationFiled: May 14, 2021Publication date: July 13, 2023Inventors: Fudong LIU, Yuejin LI, Shaohua XIE, Ge SONG
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Publication number: 20230104005Abstract: A catalyst may include a base material, a precious metal, and a metal oxide. At least a portion of the precious metal may form catalytically active sites on a surface of the metal oxide. The catalytically active sites may be formed by depositing the precious metal on the base material to form a catalyst structure, performing a first calcination on the catalyst structure, depositing the metal oxide on the catalyst structure, wherein the precious metal is at least partially encapsulated by the metal oxide, performing a second calcination on the catalyst structure, and reducing the catalyst structure with a reductive material, where at least a portion of the precious metal diffuses to a surface of the metal oxide to form the catalytically active sites.Type: ApplicationFiled: December 9, 2022Publication date: April 6, 2023Inventors: Fudong Liu, Shaohua Xie
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Publication number: 20220347668Abstract: Methods for fabricating thermally stable reducible metal oxide catalyst support structures on a base material using a multi-step incipient wetness impregnation (IWI) process are disclosed. For example, reducible metal oxide catalyst support structures having high surface area and high thermal stability may be formed using a multi-step IWI process, where the support structure is generated through high-temperature calcination between IWI steps. The metal or metal oxide catalysts fabricated using the methods are also disclosed. The generation of engineered surface defects on reducible metal oxides using a gas reduction process to serve as anchoring sites for metal or metal oxide catalysts is also disclosed. Generating engineered defects through a gas reduction process may be a relatively low-cost and scalable process suitable for fabricating efficient catalysts using a wide range of materials.Type: ApplicationFiled: July 6, 2022Publication date: November 3, 2022Inventors: Fudong Liu, Shaohua Xie
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Publication number: 20220229794Abstract: An interrupt request signal conversion system includes an interrupt request signal converter configured to generate one or more converted interrupt request signals based on one or more signals received from one or more peripheral devices, and a signal output terminal configured to send the one or more converted interrupt request signals to an interface module of a processor during operation. Each of the one or more converted interrupt request signals includes a plurality of interrupt identification bits each used to identify, based on a first level and a second level different from the first level, whether a signal received from a corresponding one of the one or more peripheral devices within a predetermined time range includes a peripheral interrupt request signal.Type: ApplicationFiled: January 13, 2022Publication date: July 21, 2022Inventors: Lizheng FAN, Cai CHEN, Fudong LIU, Xiaofan ZHAO
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Publication number: 20220229792Abstract: A serial interrupt method includes receiving a blank serial interrupt request signal (SerIRQ) and a level signal of a peripheral, based on the blank SerIRQ, generating an indication SerIRQ including an indication interrupt bit (IRQ_n) according to the level signal, and sending the instruction SerIRQ to a processor. The indication IRQ_n identifies the peripheral based on a binary code represented by a first level and a second level.Type: ApplicationFiled: January 13, 2022Publication date: July 21, 2022Inventors: Xiaofan ZHAO, Lizheng FAN, Cai CHEN, Fudong LIU
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Publication number: 20220229799Abstract: A processor interface assembly includes: a first interface circuit including a plurality of sub-interface circuits and configured to couple with a plurality of peripheral devices, wherein the plurality of peripheral devices is configured to occupy a pre-determined address space, and the pre-determined address space includes multiple sub-address spaces; and a controller including a register and configured to set a sub-address space occupied by at least one type of peripheral devices among the plurality of peripheral devices based on at least a portion of data stored in the register.Type: ApplicationFiled: January 13, 2022Publication date: July 21, 2022Inventors: Fudong LIU, Cai CHEN, Lizheng FAN, Xiaofan ZHAO
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Publication number: 20220229793Abstract: A low pin count (LPC) bus serial interrupt system includes: an interrupt direction signal generator configured to determine a current interrupt direction signal according to whether a host currently sends a first interrupt signal to an external device; and a level-shifter configured to convert a voltage level of a signal exchanged between the host and the external device according to the current interrupt direction signal.Type: ApplicationFiled: January 13, 2022Publication date: July 21, 2022Inventors: Cai CHEN, Fudong LIU, Lizheng FAN, Xiaofan ZHAO
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Publication number: 20220212178Abstract: The presently claimed invention provides an automotive catalyst comprising a platinum group metal selected from palladium, platinum, rhodium and any combination thereof; metal oxide nanoparticles; and a carrier, wherein the platinum group metal and the metal oxide nanoparticles are homogeneously dispersed on the carrier such as alumina component. The metal oxide nanoparticles have a D90 diameter in the range of 1.0 nm to 50 nm. The presently claimed invention also provides a layered catalytic article comprising catalyst comprising at least one platinum group metal; metal oxide nanoparticles; and a carrier. The presently claimed invention also provides a process for preparing the catalyst and the catalytic article, and a method of treating a gaseous exhaust stream comprising contacting the stream with the catalyst or catalytic article.Type: ApplicationFiled: April 28, 2020Publication date: July 7, 2022Inventors: Fudong LIU, Michel DEEBA, Ke-Bin LOW, Haiyang ZHU
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Publication number: 20220055021Abstract: The presently claimed invention provides a layered three-way catalyst composition for purification of exhaust gases from internal combustion engines; said catalyst comprises a first layer comprising i) palladium supported on at least one alumina component and at least one oxygen storage component; and ii) barium oxide; wherein said first layer is essentially free of strontium, and a second layer comprising: i) rhodium supported on at least one zirconia component and/or alumina component; ii) strontium oxide and/or barium oxide; and iii) optionally, palladium supported on at least one alumina component. The presently claimed invention also provides a process for preparing the layered three-way catalyst composition which involves a technique such as incipient wetness impregnation technique(A); co-precipitation technique (B); or co-impregnation technique(C). The process includes preparing a first layer; preparing a second layer; and depositing the second layer on the first layer followed by calcination.Type: ApplicationFiled: December 12, 2019Publication date: February 24, 2022Inventors: Fudong LIU, Michel DEEBA, Ke-Bin LOW
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Publication number: 20210348534Abstract: This disclosure is directed to catalyst compositions, catalytic articles for purifying exhaust gas emissions and methods of making and using the same. In particular, the disclosure relates to a catalytic article including a catalytic material on a substrate, wherein the catalytic material has a first layer and a second layer. The first layer includes a platinum group metal (PGM) component impregnated on a porous support material; and the second layer includes a rhodium component impregnated on a support material, wherein the support material is a composite material including zirconia doped with baria, alumina, or combinations thereof, wherein the zirconia-based support material includes zirconia in an amount from about 80 to about 99 wt. %.Type: ApplicationFiled: August 27, 2018Publication date: November 11, 2021Applicant: BASF CorporationInventors: Fudong LIU, Michel DEEBA
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Patent number: 11131225Abstract: Described are three-way conversion (TWC) catalytic articles effective to abate hydrocarbons (HCs), carbon monoxide (CO), and nitrogen oxides (NOx) from an engine exhaust gas containing phosphorous impurities. The disclosed catalytic article has a layered catalytic material, wherein the first layer of the catalytic material is disposed directly on the substrate and a second layer is disposed on top of the first layer. The second layer includes phosphorus resistant materials that prevent catalytic poisoning of the catalytic article by the phosphorous impurities. In particular, the second layer includes a phosphorus trap material having an alkaline earth metal component and a rhodium component impregnated on a phosphorus-resistant support material.Type: GrantFiled: August 27, 2018Date of Patent: September 28, 2021Assignee: BASF CorporationInventors: Fudong Liu, Michel Deeba
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Publication number: 20210220802Abstract: A method for fabricating a precious metal catalyst may include depositing a precious metal on a base material to form a catalyst structure, performing a first calcination on the catalyst structure, depositing a metal oxide on the catalyst structure such that the precious metal is at least partially encapsulated by the metal oxide, performing a second calcination on the catalyst structure, and reducing the catalyst structure with a reductive material to induce diffusion of at least a portion of the precious metal to a surface of the metal oxide.Type: ApplicationFiled: January 19, 2021Publication date: July 22, 2021Inventors: Fudong Liu, Shaohua Xie