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31.发明授权公开(公告)号：US10658724B2
公开(公告)日：2020-05-19
申请号：US15565597
申请日：2016-04-18
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Jaewon Kim , Justin M. Johnson , Craig W. Lindsay , Dipankar Ghosh
Abstract: At least some aspects of the present disclosure feature a waveguide for propagating an electromagnetic wave. The waveguide includes a base material and a plurality of resonators disposed in a pattern, the plurality of resonators having a resonance frequency. Each of the plurality of resonators has a relative permittivity greater than a relative permittivity of the base material. At least two of the plurality of resonators are spaced according to a lattice constant that defines a distance between a center of a first one of the resonators and a center of a neighboring second one of the resonators.
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公开(公告)号：US20180241125A1
公开(公告)日：2018-08-23
申请号：US15773253
申请日：2016-11-02
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Andrew P. Bonifas , Ronald D. Jesme , Jaewon Kim , Brock A. Hable , Nicholas G. Amell
CPC classification number: H01Q7/00 , H01Q1/2208 , H01Q5/35 , H01Q21/08 , H04B5/0056 , H04B5/0075
Abstract: At least some aspects of the present disclosure feature an RF device including a conductive loop and a plurality of resonant circuits. Each of the plurality of resonant circuits is electromagnetically coupled to the conductive loop with an effective coupling coefficient. The effective coupling coefficient has a relative low absolute value such that each of the plurality of resonant circuits has a distinctive resonant frequency.
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33.发明申请公开(公告)号：US20180221796A1
公开(公告)日：2018-08-09
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
CPC classification number: B01D35/143 , B01D46/0005 , B01D46/429 , B01D2201/52 , C02F1/001 , C02F1/485 , G01N27/9046 , G01R27/04
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：US20240421477A1
公开(公告)日：2024-12-19
申请号：US18717909
申请日：2022-12-29
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Jaewon Kim , Raymond P. Johnston , John J. Sullivan , Shawn T. Brovold , Matthew C. Messina , Charles D. Hoyle , Kenneth L. Smith , Dipankar Ghosh , Zhonghua Lu , Robert A. Sainati
Abstract: Radar retroreflective (R3) devices including an electromagnetic absorber are provided. The electromagnetic absorber is disposed on selected areas of the device to reduce specular reflection without substantially reducing retroreflection of the device.
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公开(公告)号：US11909107B2
公开(公告)日：2024-02-20
申请号：US18189780
申请日：2023-03-24
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Mohsen Salehi , Stephen J. Etzkorn , Jaewon Kim , Brett J. Sitter
CPC classification number: H01Q1/424 , B32B5/022 , B32B7/025 , B32B7/12 , B32B17/10 , B32B27/08 , B32B27/12 , H01Q1/3283 , H01Q1/421
Abstract: A gradient permittivity film comprises (a) a first permittivity layer comprising a first continuous matrix of a first material having a first relative permittivity (εr1) and a second component having a second relative permittivity (εr2) dispersed in the first continuous matrix, the first permittivity layer having a first effective layer relative permittivity (ε1) and a thickness (T1); And (b) a second permittivity layer having a second effective layer relative permittivity (ε2) and a thickness (T2) disposed on the first permittivity layer. T1=0.8(t1) to 1.2(t1), where
t
1
=
c
4
f
ε
1
;
T
2
=
0.8
(
t
2
)
to
1.2
(
t
2
)
,
where
t
2
=
c
4
f
ε
2
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Patent Agency Ranking
公开(公告)号：US11749900B2
公开(公告)日：2023-09-05
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
CPC classification number: H01Q17/004 , G01S7/03 , H01Q1/3233 , H01Q1/38 , H01Q1/421 , H05K1/0237 , G01S7/027
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：US11637367B2
公开(公告)日：2023-04-25
申请号：US17045559
申请日：2019-04-05
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Mohsen Salehi , Stephen J. Etzkorn , Jaewon Kim , Brett J. Sitter
Abstract: A gradient permittivity film comprises (a) a first permittivity layer comprising a first continuous matrix of a first material having a first relative permittivity (εr1) and a second component having a second relative permittivity (εr2) dispersed in the first continuous matrix, the first permittivity layer having a first effective layer relative permittivity (ε1) and a thickness (T1); and (b) a second permittivity layer having a second effective layer relative permittivity (ε2) and a thickness (T2) disposed on the first permittivity layer T1=0.8(t1) to 1.2(t1), where t1=(I); T2=0.8(t2) to 1.2 (T2), where T2=(II). t 1 = c 4 f ε 1 ( I ) t 2 = c 4 f ε 2 ( II )
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公开(公告)号：US20220216616A1
公开(公告)日：2022-07-07
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：US20220183153A1
公开(公告)日：2022-06-09
申请号：US17602659
申请日：2020-05-05
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：US20220022768A1
公开(公告)日：2022-01-27
申请号：US17309591
申请日：2018-12-10
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Myungchan Kang , Jaewon Kim , Jung-Ju Suh , Chekhua Chua
Abstract: Fluid monitoring devices (100,200,700) including an impedance sensing element (110,210,410,510,610,710,61,62,63) are provided. The impedance sensing element (110,210,410,510,610,710,61,62,63) includes a calibration portion (212, 412, 512, 612, 712) and a measurement portion (214,414,514,614,714), and the fluid monitoring devices (100,200,700) can be self-calibrated in real time based on calibration data from the calibration portion (212,412,512,612,712).
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