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公开(公告)号：US20210050673A1
公开(公告)日：2021-02-18
申请号：US17044054
申请日：2019-04-04
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Dipankar Ghosh , Jaewon Kim , Stephen J. Etzkorn , Ronald D. Jesme , Mohsen Salehi , Guanglei Du , John A. Wheatley
Abstract: Radar standing wave dampening systems and components are described. In particular, systems and components including an absorber composite including at least one of ceramic filler, magnetic filler, or conductive filler materials are described. Such components can reduce the intensity of standing waves and may also be combined in systems with one or more gradient permittivity tapes or films.
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公开(公告)号：US10411320B2
公开(公告)日：2019-09-10
申请号：US15565536
申请日：2016-04-11
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Christian Weinmann , Jaewon Kim , Justin M. Johnson , Dipankar Ghosh , Craig W. Lindsay
Abstract: At least some aspects of the present disclosure feature a communication device for propagating an electromagnetic wave around a blocking structure. The communication device includes a passive coupling device to capture the electromagnetic wave, and a waveguide electromagnetically coupled to the coupling device. The waveguide is disposed around the blocking structure. The waveguide has a resonance frequency matched with the coupling device. The waveguide is configured to propagate the electromagnetic wave captured by the coupling device.
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公开(公告)号：US10401238B2
公开(公告)日：2019-09-03
申请号：US15120809
申请日：2015-02-23
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Andrew P. Bonifas , Jaewon Kim , Jung-Ju Suh
IPC: G01L1/14
Abstract: In some examples, a sensor comprises a circuit including an inductor. The inductor comprises an inductor layer, a reference layer comprising at least one of an electrically conductive material or a magnetic material, and a variable layer formed between the reference layer and inductor layer. A thickness of the variable layer may be configured to change upon application of a force external to the variable layer thereby causing a change in position of the reference layer relative the inductor layer, and the change in position of the reference layer relative the inductor layer changes an inductance of the inductor. The sensor may be configured to detect the force based on the change in inductance of the inductor.
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公开(公告)号：US10363502B2
公开(公告)日：2019-07-30
申请号：US15749647
申请日：2016-08-05
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Andrew P. Bonifas , Brock A. Hable , Nicholas G. Amell , Jaewon Kim , Ronald D. Jesme , Jeffrey M. Maki , Robert E. Astle
Abstract: In general, techniques are described for filter media monitoring within a filtration system. The filter media monitoring techniques described herein include, for example, direct contact with the filter media, e.g., a sensor may be located inside a boundary defined by a surface of the filter media, or indirect contact with the filter media, e.g., a sensor may be located outside the boundary defined by the surface of the filter media such that the sensor does not make direct physical contact with the filter media being monitored.
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公开(公告)号：US10139288B2
公开(公告)日：2018-11-27
申请号：US14917570
申请日：2014-09-11
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Dipankar Ghosh , Myungchan Kang , Jaewon Kim
IPC: G01K7/00 , G01K1/00 , G01K7/34 , G01K7/38 , H01B3/12 , C01G23/00 , C01G25/00 , C01G27/00 , C04B35/468 , H01G4/12 , H01L37/02 , H01G7/04 , H01G7/06 , H02G1/00 , C08K3/22
Abstract: A passive temperature-sensing apparatus, which includes a capacitive sensing element that includes a capacitive sensing composition that includes a ferroelectric ceramic material that exhibits a measurable electrical Curie temperature that is below 30 degrees C. The capacitive sensing composition exhibits a negative slope of capacitance versus temperature over the temperature range of from 30 degrees C. to 150 degrees C.
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Patent Agency Ranking
公开(公告)号：US20180123253A1
公开(公告)日：2018-05-03
申请号：US15565536
申请日：2016-04-11
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Christian Weinmann , Jaewon Kim , Justin M. Johnson , Dipankar Ghosh , Craig W. Lindsay
CPC classification number: H01P1/2084 , H01P3/122 , H01P3/16 , H01P7/10 , H01Q3/46 , H01Q15/0086 , H01Q19/30 , H04B7/155
Abstract: At least some aspects of the present disclosure feature a communication device for propagating an electromagnetic wave around a blocking structure. The communication device includes a passive coupling device to capture the electromagnetic wave, and a waveguide electromagnetically coupled to the coupling device. The waveguide is disposed around the blocking structure. The waveguide has a resonance frequency matched with the coupling device. The waveguide is configured to propagate the electromagnetic wave captured by the coupling device.
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公开(公告)号：US20170363483A1
公开(公告)日：2017-12-21
申请号：US15540630
申请日：2014-12-30
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Sihua Yuan , Zhiguo Wen , Zheng Huang , Xuetao Yu , Gaofei Guo , Ming Zhang , Justin M. Johnson , Ronald D. Jesme , Jaewon Kim
IPC: G01K11/26
CPC classification number: G01K11/265 , G01K1/143
Abstract: Systems and methods for directly sensing, measuring, or monitoring the temperature of an electrical conductor (31) of a power cable (10), are provided. A surface acoustic wave (SAW) temperature sensor (20) is used that includes a substrate (20S) with a transducer (20T) disposed thereon. The transducer (20T) conducts conversion between an electromagnetic signal and a SAW signal that propagates on the substrate (20S). At least a portion of the substrate (20S) is disposed in thermal contact with the electrical conductor (31) such that the SAW signal varies with the temperature of the electrical conductor (31).
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公开(公告)号：US20170315000A1
公开(公告)日：2017-11-02
申请号：US15522337
申请日：2014-10-30
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Zhiguo Wen , Jaewon Kim , Justin M. Johnson , Xeutao Yu , David V. Mahoney , Michael D. Benson , Christopher D. Sebesta , Myungchan Kang
CPC classification number: G01K7/343 , G01K7/34 , G01K13/00 , H01B7/324 , H01B9/006 , H01B9/008 , H01G7/04
Abstract: Provided is a system for directly sensing, measuring, or monitoring the temperature of an electrical conductor (31) of a power cable (10). A temperature sensitive capacitor (21C) is disposed in direct thermal contact with the electrical conductor (31). The temperature sensitive capacitor (21C) includes a dielectric material that has a dielectric constant variable with the temperature of the electrical conductor (31). The temperature of the electrical conductor (31) can be sensed, measured, or monitored by measuring the capacitance of the temperature sensitive capacitor (21C).
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公开(公告)号：US20250016916A1
公开(公告)日：2025-01-09
申请号：US18892610
申请日：2024-09-23
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Raymond P. Johnston , John J. Sullivan , Matthew C. Messina , Charles D. Hoyle , Jaewon Kim , Haiyan Zhang , Matthew S. Stay , Robert A. Sainati , Kevin W. Gotrik , Kenneth A.P. Meyer , Gregory L. Abraham , Joseph C. Carls , Douglas S. Dunn
Abstract: A patterned article includes a unitary polymeric layer and a plurality of electrically conductive elements embedded at least partially in the unitary polymeric layer. Each electrically conductive element includes a conductive seed layer having a top major surface and an opposite bottom major surface in direct contact with the unitary polymeric layer, and includes a metallic body disposed on the top major surface of the conductive seed layer. The metallic body has a bottom major surface and at least one sidewall. The bottom major surface contacts the conductive seed layer. Each sidewall is in direct contact with the unitary polymeric layer and extends from the bottom major surface of the metallic body toward or to, but not past, a top major surface of the unitary polymeric layer. The conductive elements may be electrically isolated from one another. Processes for making the patterned article are described.
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公开(公告)号：US20240264347A1
公开(公告)日：2024-08-08
申请号：US18567823
申请日：2021-06-28
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Fan Long , Bharat R. Acharya , Jaewon Kim , Jingfei Chen , Huijie Xie , Zhe Hu
CPC classification number: G02B5/26 , G01S7/03 , G01S13/931 , G02B1/04 , G02B5/208 , G02B5/3008
Abstract: An optical stack (100) includes a substrate (110), a radio-wave anti-reflection sheet (130) configured to reduce reflection from the optical stack (100) of radio waves at a predetermined operating frequency (f), and a visible light reflective, infrared light transmissive multilayer optical film (120) disposed between the radio-wave anti-reflection sheet (130) and the substrate (110). For N radiation substantially normally incident on the radio-wave anti-reflection sheet (130) and for a first frequency range at least 20 GHz wide, centered on the predetermined operating frequency (f), and disposed between about 1 GHz and about 120 GHz, a return loss of the optical stack (100) is asymmetric about the predetermined operating frequency (f) in the first frequency range. The optical stack (100) has a largest return loss S11L in the first frequency range of less than −10 dB and a difference between the largest return loss S11L and a smallest return loss S11S in the first frequency range is less than about 2 dB.
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