Patents by Inventor Marcus Hultmark
Marcus Hultmark 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: 11825205Abstract: The present disclosure relates to a computer implemented method and system for obtaining an image sensor exposure setting for use in capturing an image using a main flash.Type: GrantFiled: May 26, 2020Date of Patent: November 21, 2023Assignee: PROFOTO AKTIEBOLAGInventors: Marcus Hultmark, Emanuel Schütt, Anton Falk
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Publication number: 20230258415Abstract: Disclosed are systems and techniques for increasing heat transfer from a substrate to a working fluid. The systems may include a substrate comprising a plurality of grooves or cavities on at least one external surface. The system may also include an infusing liquid filling at least a majority of the plurality of grooves. The system may also include a working fluid configured to flow parallel to the external surface.Type: ApplicationFiled: February 17, 2023Publication date: August 17, 2023Applicants: The Trustees of Princeton University, Board of Regents, The University of Texas System, KTH Royal Institute of TechnologyInventors: Marcus Hultmark, Shervin Bagheri, Johan Sundin, Stefano Leonardi, Umberto Ciri
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Patent number: 11703366Abstract: A method is provided for measuring different flow properties of a fluid. The method includes (a) providing a nanowire, the resistance of the nanowire varying based on temperature changes of the nanowire that reflect values of the different flow properties of the fluid when the nanowire is operated in different modes of operation respectively, such that the nanowire measures different flow properties when operated in different modes of operation respectively, and (b) alternating the nanowire between different modes of operation, measuring different flow properties of the fluid during the different modes of operation, respectively, and using the measurements of one of the flow properties to correct the measurements of another flow property. Other applications are also described.Type: GrantFiled: October 19, 2020Date of Patent: July 18, 2023Assignee: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Gilad Arwatz, Marcus Hultmark
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Publication number: 20220239820Abstract: The present disclosure relates to a computer implemented method and system for obtaining an image sensor exposure setting for use in capturing an image using a main flash.Type: ApplicationFiled: May 26, 2020Publication date: July 28, 2022Inventors: Marcus HULTMARK, Emanuel SCHÜTT, Anton FALK
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Patent number: 11351313Abstract: A system and method for monitoring the pressure of an injection site, utilizing a fluid operating in the laminar regime flowing through a calibrated tube, and measuring a pressure at one end of the calibrated tube with a pressure sensor, as well as a fluid velocity with a flow sensor, such as an elastic filament velocimeter, that comprises a nano-scale sensing element. Additional elements may be utilized, including the use of data acquisition units, processors, user interfaces, pumps, syringes, and control loops.Type: GrantFiled: February 22, 2018Date of Patent: June 7, 2022Assignee: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Marcus Hultmark, Yuyang Fan, Clay Byers, Matthew Fu
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Patent number: 11187715Abstract: A system and method for measuring multiple velocity components with a single wire, by alternating current through the wire at a sufficiently high frequency, where the first current allows measurement of a first velocity component, and the second current allows measurement of a second velocity component. The resolution of the measurements can be adjusted by altering the frequency at which the current is alternated.Type: GrantFiled: February 14, 2018Date of Patent: November 30, 2021Assignee: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Yuyang Fan, Marcus Hultmark, Matt Fu, Clay Byers
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Patent number: 11054290Abstract: Disclosed is an apparatus for measuring velocity of a fluid stream via deflection of a wire filament. Also disclosed is a process for measuring velocity of a fluid stream, requiring deflecting two or more wire filaments in a fluid stream, measuring two or more resistances, and equating the velocity of the fluid stream to the result of a function of the two or more resistances. In both the apparatus and method, one wire filament must have a length dimension longer than at least one of a dimension of the wire filament in the primary sensing or transverse direction, as well as a dimension of the wire filament in the primary sensing and/or transverse direction less than 50 ? ? ? U ? ? ? throughout a predetermined operating range.Type: GrantFiled: January 8, 2020Date of Patent: July 6, 2021Assignee: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Marcus Hultmark, Clay Byers, Matthew Fu, Yuyang Fan
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Publication number: 20210172775Abstract: A method is provided for measuring different flow properties of a fluid. The method includes (a) providing a nanowire, the resistance of the nanowire varying based on temperature changes of the nanowire that reflect values of the different flow properties of the fluid when the nanowire is operated in different modes of operation respectively, such that the nanowire measures different flow properties when operated in different modes of operation respectively, and (b) alternating the nanowire between different modes of operation, measuring different flow properties of the fluid during the different modes of operation, respectively, and using the measurements of one of the flow properties to correct the measurements of another flow property. Other applications are also described.Type: ApplicationFiled: October 19, 2020Publication date: June 10, 2021Applicant: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Gilad ARWATZ, Marcus Hultmark
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Patent number: 10837813Abstract: A method is provided for measuring at least two flow properties of a fluid. The method includes providing at least two nanowires, the resistance of each nanowire varying based on a value of a different respective flow property such that each nanowire is configured to measure the different respective flow property, and operating each of the nanowires in a different respective mode of operation, in order to measure the at least two flow properties simultaneously in real-time. Other embodiments are also described.Type: GrantFiled: August 24, 2017Date of Patent: November 17, 2020Assignee: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Gilad Arwatz, Marcus Hultmark
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Publication number: 20200233006Abstract: A system and method for measuring multiple velocity components with a single wire, by alternating current through the wire at a sufficiently high frequency, where the first current allows measurement of a first velocity component, and the second current allows measurement of a second velocity component. The resolution of the measurements can be adjusted by altering the frequency at which the current is alternated.Type: ApplicationFiled: February 14, 2018Publication date: July 23, 2020Applicant: The Trustees of Princeton UniversityInventors: Yuyang FAN, Marcus HULTMARK, Matt FU, Clay BYERS
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Publication number: 20200141772Abstract: Disclosed is an apparatus for measuring velocity of a fluid stream via deflection of a wire filament. Also disclosed is a process for measuring velocity of a fluid stream, requiring deflecting two or more wire filaments in a fluid stream, measuring two or more resistances, and equating the velocity of the fluid stream to the result of a function of the two or more resistances. In both the apparatus and method, one wire filament must have a length dimension longer than at least one of a dimension of the wire filament in the primary sensing or transverse direction, as well as a dimension of the wire filament in the primary sensing and/or transverse direction less than 50 ? ? ? U ? ? ? throughout a predetermined operating range.Type: ApplicationFiled: January 8, 2020Publication date: May 7, 2020Applicant: The Trustees of Princeton UniversityInventors: Marcus HULTMARK, Clay BYERS, Matthew FU, Yuyang FAN
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Patent number: 10539443Abstract: Disclosed is an apparatus for measuring velocity of a fluid stream via deflection of a wire filament. Also disclosed is a process for measuring velocity of a fluid stream, requiring deflecting two or more wire filaments in a fluid stream, measuring two or more resistances, and equating the velocity of the fluid stream to the result of a function of the two or more resistances. In both the apparatus and method, one wire filament must have a length dimension longer than at least one of a dimension of the wire filament in the primary sensing or transverse direction, as well as a dimension of the wire filament in the primary sensing and/or transverse direction less than 50 ? ? U ? ? ? throughout a predetermined operating range.Type: GrantFiled: July 5, 2016Date of Patent: January 21, 2020Assignee: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Marcus Hultmark, Clay Byers, Matthew Fu, Yuyang Fan
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Publication number: 20190381260Abstract: A system and method for monitoring the pressure of an injection site, utilizing a fluid operating in the laminar regime flowing through a calibrated tube, and measuring a pressure at one end of the calibrated tube with a pressure sensor, as well as a fluid velocity with a flow sensor, such as an elastic filament velocimeter, that comprises a nano-scale sensing element. Additional elements may be utilized, including the use of data acquisition units, processors, user interfaces, pumps, syringes, and control loops.Type: ApplicationFiled: February 22, 2018Publication date: December 19, 2019Applicant: The Trustees of Princeton UniversityInventors: Marcus HULTMARK, Yuyang FAN, Clay BYERS, Matthew FU
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Patent number: 10288492Abstract: In the present invention, a temperature sensor system and methods for using the apparatus are disclosed, the temperature sensor having particular thermal-inertia time constants. More specifically, the temperature sensor system comprises prongs having a defined l/d ratio range, a sensing element having a low volume, and constant-current circuitry.Type: GrantFiled: October 7, 2016Date of Patent: May 14, 2019Assignee: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Gilad Arwatz, Yuyang Fan, Carla Bahri, Marcus Hultmark
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Publication number: 20180252559Abstract: Disclosed is an apparatus for measuring velocity of a fluid stream via deflection of a wire filament. Also disclosed is a process for measuring velocity of a fluid stream, requiring deflecting two or more wire filaments in a fluid stream, measuring two or more resistances, and equating the velocity of the fluid stream to the result of a function of the two or more resistances. In both the apparatus and method, one wire filament must have a length dimension longer than at least one of a dimension of the wire filament in the primary sensing or transverse direction, as well as a dimension of the wire filament in the primary sensing and/or transverse direction less than 50 ? ? U ? ? ? throughout a predetermined operating range.Type: ApplicationFiled: July 5, 2015Publication date: September 6, 2018Applicant: The Trustees of Princeton UniversityInventors: Marcus HULTMARK, Clay BYERS, Matthew FU, Yuyang FAN
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Publication number: 20180058889Abstract: A method is provided for measuring at least two flow properties of a fluid. The method includes providing at least two nanowires, the resistance of each nanowire varying based on a value of a different respective flow property such that each nanowire is configured to measure the different respective flow property, and operating each of the nanowires in a different respective mode of operation, in order to measure the at least two flow properties simultaneously in real-time. Other embodiments are also described.Type: ApplicationFiled: August 24, 2017Publication date: March 1, 2018Applicant: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Gilad ARWATZ, Marcus HULTMARK
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Publication number: 20170138799Abstract: In the present invention, a temperature sensor system and methods for using the apparatus are disclosed, the temperature sensor having particular thermal-inertia time constants. More specifically, the temperature sensor system comprises prongs having a defined l/d ratio range, a sensing element having a low volume, and constant-current circuitry.Type: ApplicationFiled: October 7, 2016Publication date: May 18, 2017Applicant: The Trustees of Princeton UniversityInventors: Gilad Arwatz, Yuyang Fan, Carla Bahri, Marcus Hultmark
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Patent number: 9500615Abstract: A water content sensor is disclosed. The sensor includes a wire filament configured with a Péclet number of 1 or less. The wire filament has an electrically conductive material with an electrical resistance that varies as a function of temperature. The sensor includes a pair of electrically conductive prongs coupled to opposite ends of the wire filament. Electrically conductive stubs may be coupled to the prongs. A structural support may be coupled to the prongs. The structural support structure may be comprised of silicon. The wire filament may be coupled to driving circuitry configured to supply an electric current to the wire filament to maintain the wire filament at one of an approximately constant current, an approximately constant voltage and an approximately constant temperature. The wire filament may be platinum or titanium.Type: GrantFiled: August 11, 2014Date of Patent: November 22, 2016Assignee: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Marcus Hultmark, Gilad Arwatz, Yuyang Fan, Margit Vallikivi
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Liquid-Infused Surfaces Featuring Reduced Drag Characteristics, and Methods for Fabricating the Same
Publication number: 20160122677Abstract: In a broad aspect of the invention there are provided liquid infused surfaces that feature drag reducing characteristics. In a further broad aspect, the present invention provides methods for designing and fabricating liquid infused surfaces that feature drag reducing characteristics. In a yet further broad aspect the present invention provides methods for increasing the operating efficiency of systems in which a flowing bulk fluid is in contact with a patterned surface, the increased operating efficiency specifically being realized from a reduction of the drag forces due to the bulk fluid flowing over the patterned surface.Type: ApplicationFiled: October 30, 2015Publication date: May 5, 2016Inventors: Matthew Fu, Marcus Hultmark, Ian Jacobi, Brian Rosenberg, Alexander Smits, Howard Stone, Jason Wexler -
Publication number: 20150075280Abstract: A water content sensor is disclosed. The sensor includes a wire filament configured with a Péclet number of 1 or less. The wire filament has an electrically conductive material with an electrical resistance that varies as a function of temperature. The sensor includes a pair of electrically conductive prongs coupled to opposite ends of the wire filament. Electrically conductive stubs may be coupled to the prongs. A structural support may be coupled to the prongs. The structural support structure may be comprised of silicon. The wire filament may be coupled to driving circuitry configured to supply an electric current to the wire filament to maintain the wire filament at one of an approximately constant current, an approximately constant voltage and an approximately constant temperature. The wire filament may be platinum or titanium.Type: ApplicationFiled: August 11, 2014Publication date: March 19, 2015Applicant: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Marcus Hultmark, Gilad Arwatz, Yuyang Fan, Margit Vallikivi