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公开(公告)号：US10287413B2
公开(公告)日：2019-05-14
申请号：US15382834
申请日：2016-12-19
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Bharat R. Acharya , Charles L. Bruzzone , Michael S. Graff , Derek J. Dehn , Clint J. Novotny
Abstract: The present disclosure relates to polymer composites that include a thermoplastic polymer, network structure and a soft, ferromagnetic particulate material. The polymer composites may be used, for example, as magnetic flux field directional materials. The present invention also relates to methods of making the polymer composites, e.g. polymer composite sheets, of the present disclosure. In one embodiment, the present disclosure provides a polymer composite including a thermoplastic polymer, network structure; and a soft, ferromagnetic particulate material distributed within the thermoplastic polymer, network structure. The weight fraction of soft, ferromagnetic particulate material may be between 0.80 and 0.98, based on the total weight of the polymer composite and/or the thermoplastic polymer may have a number average molecular weight between 5×104 g/mol to 5×107 g/mol.
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公开(公告)号：US20240373606A1
公开(公告)日：2024-11-07
申请号：US18777895
申请日：2024-07-19
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Michael S. Graff , Derek J. Dehn , Paul T. Hines , Charles L. Bruzzone , Bharat R. Acharya , Ronald D. Jesme , William J. Kopecky , Jennifer J. Sokol , Sergei A. Manuilov
Abstract: A magnetic shielding film includes opposing first and second major surfaces and a plurality of particles dispersed therebetween, each particle having a magnetic permeability, a thickness H along a thickness direction of the particle, and a longest dimension L along a length direction of the particle orthogonal to the thickness direction, L/H greater than or equal to 2, the particles defining a plurality of voids therebetween, the length directions of at least 60% of the particles oriented within 5.5 degrees of a same orientation direction.
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公开(公告)号：US20240040759A1
公开(公告)日：2024-02-01
申请号：US18257040
申请日：2021-12-07
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Adam D. Miller , Sergei A. Manuilov , Michael S. Graff , Dipankar Ghosh
CPC classification number: H05K9/0083 , C08K9/02 , C09C1/0078 , C08K2201/01 , C01P2006/42 , C01P2006/40 , C01P2004/80 , C01P2004/20
Abstract: A composite comprising a polymeric matrix and EM absorbers dispersed within the polymeric matrix. Each EM absorber comprises a dielectric flake, and a continuous magnetic coating on at least one major surface of the dielectric flake. The EM absorbers function as dielectric and magnetic absorbers in the 1-100 GHz frequency range. The composite can be used as an electromagnetic shielding article to mitigate electromagnetic interference in, for example, high speed, high frequency (HSHF) consumer electronics.
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公开(公告)号：US20230055151A1
公开(公告)日：2023-02-23
申请号：US17792815
申请日：2021-01-14
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Samuel J. Carpenter , Aaron K. Nienaber , Joseph B. Eckel , Ronald D. Jesme , Jacob P. Podkaminer , Victor Ho , Sebastian Goris , Matthew T. Johnson , Michael S. Graff , Steven H. Kong
IPC: H01L23/373 , H01L23/42
Abstract: A thermal interface layer includes pluralities of first and second particles dispersed in a polymeric binder at a total loading V in a range of about 40 volume percent to about 70 volume percent. The first and second particles have different compositions. The first particles include one or more of iron or nickel. The second particles include one or more of aluminum, magnesium, silicon, copper, or zinc. The thermal interface layer has a thermal conductivity in a thickness direction of the thermal interface layer in units of W/mK of at least K=5.1−0.17 V+0.002 V2.
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公开(公告)号：US20220354032A1
公开(公告)日：2022-11-03
申请号：US17607991
申请日：2020-05-08
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Michael S. Graff , Derek J. Dehn , Paul T. Hines , Charles L. Bruzzone , Bharat R. Acharya , Ronald D. Jesme , William J. Kopecky , Jennifer J. Sokol , Sergei A. Manuilov
Abstract: A magnetic shielding film includes opposing first and second major surfaces and a plurality of particles dispersed therebetween, each particle having a magnetic permeability, a thickness H along a thickness direction of the particle, and a longest dimension L along a length direction of the particle orthogonal to the thickness direction, L/H greater than or equal to 2, the particles defining a plurality of voids therebetween, the length directions of at least 60% of the particles oriented within 5.5 degrees of a same orientation direction.
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Patent Agency Ranking
公开(公告)号：US10734725B2
公开(公告)日：2020-08-04
申请号：US15780682
申请日：2016-11-22
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Michael S. Graff , Biplab K. Roy
Abstract: A magnetic isolator includes a dielectric film having a layer of electrically-conductive soft magnetic material bonded thereto. The layer of electrically-conductive soft magnetic material comprises substantially coplanar electrically-conductive soft magnetic islands separated one from another by gaps. At least some of the electrically-conductive soft magnetic islands have an outer insulating oxidized layer that electrically insulates them from adjacent electrically-conductive soft magnetic islands. The gaps at least partially suppress electrical eddy current induced within the layer of soft magnetic material when in the presence of applied external magnetic field. An electronic device including the magnetic isolator and a method of making the magnetic isolator are also disclosed.
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公开(公告)号：US10658096B2
公开(公告)日：2020-05-19
申请号：US16077496
申请日：2017-02-09
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Xiaoming Kou , Michael S. Graff , Jeffrey M. Florczak , Steven L. Johnson , Rui Yang , Carlos A. Barrios , Steven D. Theiss , Kevin W. Gotrik
IPC: B32B7/025 , H01F1/147 , B32B9/04 , B32B15/08 , B32B7/02 , B32B27/28 , B32B27/32 , B32B27/36 , B32B7/12 , B32B27/08 , H01F3/02
Abstract: A multilayer magnetic sheet is described which comprises a plurality of stacked magnetic component layers separated by first electrically insulating layers. Each of the plurality of magnetic component layers comprises a plurality of isolated magnetic sublayers having a magnetic layer thickness of less than one micron. The multilayer magnetic sheet has a magnetic fraction between about 5% and about 80%; a total magnetic thickness of greater than or equal to 5 microns; and a relative composite permeability of greater than about 20.
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公开(公告)号：US20240314991A1
公开(公告)日：2024-09-19
申请号：US18575410
申请日：2022-06-28
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Sergei A. Manuilov , Ivan Lemesh , Jaewon Kim , Joseph B. Eckel , Michael S. Graff
CPC classification number: H05K9/0081 , H01Q3/46 , H01Q15/14 , H01Q17/00
Abstract: Articles to control an electromagnetic (EM) radiation in the range of 1 GHz to 100 GHz, and methods of making and using the same are provided. An EM controlling sheet structure includes a dielectric carrier layer and an array of metallic resonant elements supported by the dielectric carrier layer to form an EM metamaterial structure in a non-random pattern. The metallic resonant elements are oriented such that each metallic resonant element has an axis substantially parallel to each other and substantially parallel to a major plane of the dielectric carrier layer.
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公开(公告)号：US12075606B2
公开(公告)日：2024-08-27
申请号：US17607991
申请日：2020-05-08
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Michael S. Graff , Derek J. Dehn , Paul T. Hines , Charles L Bruzzone , Bharat R. Acharya , Ronald D. Jesme , William J. Kopecky , Jennifer J. Sokol , Sergei A. Manuilov
CPC classification number: H05K9/0075 , H01F1/20
Abstract: A magnetic shielding film includes opposing first and second major surfaces and a plurality of particles dispersed therebetween, each particle having a magnetic permeability, a thickness H along a thickness direction of the particle, and a longest dimension L along a length direction of the particle orthogonal to the thickness direction, L/H greater than or equal to 2, the particles defining a plurality of voids therebetween, the length directions of at least 60% of the particles oriented within 5.5 degrees of a same orientation direction.
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公开(公告)号：US11807732B2
公开(公告)日：2023-11-07
申请号：US16760468
申请日：2018-11-15
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Derek J. Dehn , Clinton P. Waller, Jr. , Jeanne M. Bruss , Bharat R. Acharya , Brandon A. Bartling , Michael S. Graff , Noah O. Shanti , Fabian Stolzenburg , Satinder K. Nayar
CPC classification number: C08J9/28 , C08J9/0004 , C08J9/0066 , C08K3/22 , C08J2201/0522 , C08J2201/0542 , C08J2205/05 , C08J2323/06 , C08K2003/2237 , C08K2201/001 , C08K2201/01
Abstract: Method of making a polymer matrix composite comprising a porous polymeric network structure; and a plurality of particles distributed within the polymeric network structure, the method comprising: combining a thermoplastic polymer, a solvent that the thermoplastic polymer is soluble in, and a plurality of particles to provide a slurry; forming the slurry in to an article; heating the article in an environment to retain at least 90 percent by weight of the solvent, based on the weight of the solvent in the slurry, and inducing phase separation of the thermoplastic polymer from the solvent to provide the polymer matrix composite.
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