Patents by Inventor Jan Muehlbauer
Jan Muehlbauer 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: 20240134894Abstract: A method executes at a computer system to retrieve data from a database. Upon receiving a database query, the computer system translates the query into an intermediate representation, and estimates a compilation time to compile the intermediate representation into machine executable code. The query execution time to retrieve a result set is also estimated. In accordance with a determination that the query execution time and compilation time satisfy an interpretation criterion, the computer system invokes a byte code interpreter to interpret the intermediate representation and retrieve the result set from the database. In accordance with a determination that the query execution and compilation times satisfy one of a plurality of compilation criteria, the computer system compiles the intermediate representation to form machine code and executes the machine code to retrieve the result set from the database. In some cases, the query intermediate representation is optimized prior to compilation.Type: ApplicationFiled: October 17, 2023Publication date: April 25, 2024Inventors: Thomas NEUMANN, Viktor Leis, Alfons Kemper, Tobias Muehlbauer, Jan Finis
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Publication number: 20220010934Abstract: The disclosed systems and methods are related to a positive displacement compression for use in various applications including gas processing, air conditioning, refrigeration, etc., to produce an isothermal compression to enhance the compression efficiency. The heat exchange enhanced compression is conducted by the use of cylinders partially filled with incompressible fluid (e.g., oil) acting as a piston compressing working fluid (e.g., CO2). The isothermal compression is contemplated in various modifications. A variety of heat exchange (cooling) techniques may be arranged either within the compression chamber or the compression process may be embedded in the heat exchanger to cool down the working fluid (for example, CO2).Type: ApplicationFiled: July 9, 2021Publication date: January 13, 2022Inventors: K. REINHARD RADERMACHER, VIKRANT C. AUTE, JIAZHEN LING, YUNHO HWANG, JAN MUEHLBAUER
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Publication number: 20210285727Abstract: A heat exchanger has first and second manifold portions and an array of substantially-parallel heat-transfer tubes extending between the first and second manifold portions. Each heat-transfer tube has an outer surface and an inner surface defining a conduit. In a cross-sectional view, the outer surface of each heat-transfer tube can form a first shape that is non-circular, and the inner surface of heat-transfer tube can form a second shape different than the first shape. Alternatively or additionally, at least one of the first shape and the second shape lacks reflectional symmetry in the cross-sectional view. Methods for fabricating such heat exchangers are also provided.Type: ApplicationFiled: March 9, 2021Publication date: September 16, 2021Inventors: Vikrant C. AUTE, Daniel Fernandes BACELLAR, K. Reinhard RADERMACHER, James M. TANCABEL, Jiazhen LING, Yoram Leon SHABTAY, Jan MUEHLBAUER
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Patent number: 10808159Abstract: A cooling system based on thermoelastic effect is provided. The system comprises a heat sink, a refrigerated space and a regenerator coupled to the refrigerated space and to the heat sink to pump heat from the refrigerated space to the heat sink. The regenerator comprises solid thermoelastic refrigerant materials capable of absorbing or releasing heat.Type: GrantFiled: November 5, 2018Date of Patent: October 20, 2020Assignee: University of Maryland, College ParkInventors: Ichiro Takeuchi, Jun Cui, Manfred R. Wuttig, Yiming Wu, K. Reinhard Radermacher, Yunho Hwang, Jan Muehlbauer
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Patent number: 10801750Abstract: Despite otherwise uncomfortable conditions in a surrounding environment, a customizable microenvironment can be created around a user to maintain a comfortable temperature and/or humidity level using a comfort unit. For example, the environment may be an office building where conditions are out of the comfortable range to save on energy or for other reasons, a factory/shop environment that is poorly conditioned, or an outdoor location with little to no conditioning. A sensing unit can monitor biometric and environmental data and can determine a comfort level of the user. The comfort unit can then dynamically respond to the determined comfort level and adjust the microenvironment to improve the user's comfort level. The comfort unit can follow the user as the user moves within the macro-environment, or can otherwise move within the macro-environment to achieve certain functions, such as recharging or spatial shifting of thermal load within the overall macro-environment.Type: GrantFiled: June 11, 2016Date of Patent: October 13, 2020Assignee: University of Maryland, College ParkInventors: K. Reinhard Radermacher, Vikrant C. Aute, Yunho Hwang, Jiazhen Ling, Jelena Srebric, Jan Muehlbauer, Rohit Dhumane, Yilin Du, Daniel Alejandro Dalgo Reyes, Nicholas W. Mattise
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Publication number: 20190085228Abstract: A cooling system based on thermoelastic effect is provided. The system comprises a heat sink, a refrigerated space and a regenerator coupled to the refrigerated space and to the heat sink to pump heat from the refrigerated space to the heat sink. The regenerator comprises solid thermoelastic refrigerant materials capable of absorbing or releasing heat.Type: ApplicationFiled: November 5, 2018Publication date: March 21, 2019Inventors: Ichiro Takeuchi, Jun Cui, Manfred R. Wuttig, Yiming Wu, Reinhard K. Radermacher, Yunho Hwang, Jan Muehlbauer
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Patent number: 10119059Abstract: A cooling system based on thermoelastic effect is provided. The system comprises a heat sink, a refrigerated space and a regenerator coupled to the refrigerated space and to the heat sink to pump heat from the refrigerated space to the heat sink. The regenerator comprises solid thermoelastic refrigerant materials capable of absorbing or releasing heat.Type: GrantFiled: March 27, 2012Date of Patent: November 6, 2018Assignees: THE UNIVERSITY OF MARYLANDInventors: Jun Cui, Ichiro Takeuchi, Manfred Wuttig, Yiming Wu, Reinhard Radermacher, Yunho Hwang, Jan Muehlbauer
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Publication number: 20180120873Abstract: Despite otherwise uncomfortable conditions in a surrounding environment, a customizable microenvironment can be created around a user to maintain a comfortable temperature and/or humidity level using a comfort unit. For example, the environment may be an office building where conditions are out of the comfortable range to save on energy or for other reasons, a factory/shop environment that is poorly conditioned, or an outdoor location with little to no conditioning. A sensing unit can monitor biometric and environmental data and can determine a comfort level of the user. The comfort unit can then dynamically respond to the determined comfort level and adjust the microenvironment to improve the user's comfort level. The comfort unit can follow the user as the user moves within the macro-environment, or can otherwise move within the macro-environment to achieve certain functions, such as recharging or spatial shifting of thermal load within the overall macro-environment.Type: ApplicationFiled: June 11, 2016Publication date: May 3, 2018Inventors: Reinhard K. RADERMACHER, Vikrant C. AUTE, Yunho HWANG, Jiazhen LING, Jelena SREBRIC, Jan MUEHLBAUER, Rohit DHUMANE, Yilin DU, Daniel Alejandro DALGO REYES, Nicholas W. MATTISE
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Publication number: 20120273158Abstract: A cooling system based on thermoelastic effect is provided. The system comprises a heat sink, a refrigerated space and a regenerator coupled to the refrigerated space and to the heat sink to pump heat from the refrigerated space to the heat sink. The regenerator comprises solid thermoelastic refrigerant materials capable of absorbing or releasing heat.Type: ApplicationFiled: March 27, 2012Publication date: November 1, 2012Applicants: The University of MarylandInventors: Jun Cui, Ichiro Takeuchi, Manfred Wuttig, Yiming Wu, Reinhard Radermacher, Yunho Hwang, Jan Muehlbauer
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Patent number: D657854Type: GrantFiled: August 15, 2011Date of Patent: April 17, 2012Assignee: The Abell Foundation, Inc.Inventors: Yunho Hwang, Hoseong Lee, Jan Muehlbauer, Laurence Jay Shapiro, Barry R. Cole
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Patent number: D657855Type: GrantFiled: August 15, 2011Date of Patent: April 17, 2012Assignee: The Abell Foundations, Inc.Inventors: Yunho Hwang, Hoseong Lee, Jan Muehlbauer, Laurence Jay Shapiro, Barry R. Cole
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Patent number: D657856Type: GrantFiled: August 15, 2011Date of Patent: April 17, 2012Assignee: The Abell Foundation, Inc.Inventors: Yunho Hwang, Hoseong Lee, Jan Muehlbauer, Laurence Jay Shapiro, Barry R. Cole