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公开(公告)号：US12113278B2
公开(公告)日：2024-10-08
申请号：US17608046
申请日：2020-05-21
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Jaewon Kim , Mohsen Salehi , Michael A. McCoy , Susannah C. Clear
Abstract: This disclosure relates generally to radar retroreflective articles comprising one or more dielectric layers adjacent to a reflective layer, wherein the dielectric layer or layers aids in increasing the radar cross section of the radar retroreflective articles.
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公开(公告)号：US20240260243A1
公开(公告)日：2024-08-01
申请号：US18634004
申请日：2024-04-12
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Zhonghua Lu , Badri Veeraraghavan , Joel S. Peiffer , Jeffrey A. Tostenrude , Jaewon Kim , Zulfiqar A. Khan , Jennifer J. Sokol
CPC classification number: H05K9/0083 , H01Q1/02 , H01Q1/526
Abstract: A thermally conductive electromagnetically absorbing material includes a plurality of particles dispersed in a binder. The plurality of particles can have a particle size distribution having at least three peaks, where at least a majority of particles within a half width at half maximum of one, but not the other ones, of the at least three peaks are at least partially coated with an electromagnetically absorbing coating. The plurality of particles can include pluralities of first and second particles where a total number of the first particles is at most 1% of a total number of the first and second particles and where the first particles are more electromagnetically absorbing than the second particles. Films, molded articles and systems including the thermally conductive electromagnetically absorbing material are described.
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公开(公告)号：US12032059B2
公开(公告)日：2024-07-09
申请号：US17612329
申请日：2020-05-22
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Kui Chen-Ho , Jonathan D. Gandrud , Mohsen Salehi , Douglas S. Dunn , Jaewon Kim
IPC: G01S13/931 , B62J45/20 , B62J45/41 , B62K3/00 , G02B5/124 , G06K19/077
CPC classification number: G01S13/931 , G02B5/124 , G06K19/07758 , B62J45/20 , B62J45/41 , B62K3/002 , B62K2202/00
Abstract: A radar-optical fusion article for attachment to a substrate is described. The radar-optical fusion article includes a first retroreflective layer which is configured to retroreflect at least a portion of light having a wavelength in a range from about 400 nm to about 2500 nm. The radar-optical fusion article includes a second retroreflective layer disposed adjacent to the first retroreflective layer. The second retroreflective layer is configured to retroreflect at least a portion of an electromagnetic wave having a frequency in the range from about 0.5 GHz to about 100 GHz.
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公开(公告)号：US11677130B2
公开(公告)日：2023-06-13
申请号：US17508341
申请日：2021-10-22
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Jaewon Kim , Dipankar Ghosh , Craig W. Lindsay , Matthew S. Stay
IPC: H01P3/16
CPC classification number: H01P3/16
Abstract: A waveguide for receiving an incident electromagnetic wave (EMW) having an operating frequency Γ includes an array of spaced apart unit cells arranged along the waveguide. The unit cells are configured to resonantly couple to the incident EMW and radiate an EMW at the operating frequency propagating inside and along the waveguide. Each unit cell is configured to couple to the incident EMW with a first coupling efficiency and includes a dielectric body configured to couple to the incident EMW with a second coupling efficiency and one or more metal layers disposed on and partially covering the dielectric body. The second coupling efficiency is substantially smaller than the first coupling efficiency. A communication system includes the waveguide and a transceiver configured to emit an EMW having the operating frequency Γ.
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公开(公告)号：US20220320745A1
公开(公告)日：2022-10-06
申请号：US17608766
申请日：2020-05-21
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Mohsen Salehi , Jaewon Kim
Abstract: This disclosure relates generally to radar retroreflective articles comprising one or more dielectric layers adjacent to a reflective layer, wherein the dielectric layer or layers aids in increasing the radar cross section of the radar retroreflective articles.
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Patent Agency Ranking
公开(公告)号：US20210021050A1
公开(公告)日：2021-01-21
申请号：US17043432
申请日：2019-04-04
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Jaewon Kim , Stephen J. Etzkorn , Ronald D. Jesme , Dipankar Ghosh , Mohsen Salehi , Guanglei Du , John A. Wheatley
Abstract: Gradient permittivity films are described. In particular, gradient permittivity films including a plurality of layers each having a thickness where at least one layer is perforated and has a different air volume fraction from another of the plurality of layers by at least 0.05. Such films may be useful in improving the signal to noise ratio for transmitting and receiving units operating between 20 GHz and 300 GHz behind a protective cover.
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公开(公告)号：US10458860B2
公开(公告)日：2019-10-29
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
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：US20190054401A1
公开(公告)日：2019-02-21
申请号：US16164924
申请日：2018-10-19
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Andrew P. Bonifas , Nicholas G. Amell , Ronald D. Jesme , Jeffrey M. Maki , Brock A. Hable , Jaewon Kim
IPC: B01D35/143 , B01D46/42 , B01D27/10 , B01D46/00
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：US10143948B2
公开(公告)日：2018-12-04
申请号：US15749350
申请日：2016-08-10
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Andrew P. Bonifas , Nicholas G. Amell , Ronald D. Jesme , Jeffrey M. Maki , Brock A. Hable , Jaewon Kim
IPC: B01D35/143 , B01D27/10 , B01D46/00 , B01D46/42 , C02F1/00
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：US20180221795A1
公开(公告)日：2018-08-09
申请号：US15749350
申请日：2016-08-10
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Andrew P. Bonifas , Nicholas G. Amell , Ronald D. Jesme , Jeffrey M. Maki , Brock A. Hable , Jaewon Kim
IPC: B01D35/143 , B01D27/10 , B01D46/00 , B01D46/42
CPC classification number: B01D35/143 , B01D27/101 , B01D46/0086 , B01D46/429 , B01D2201/52 , B01D2201/56
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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