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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10658096 B1

PDFFull Text
Date of Patent:
May. 19, 2020

Filed:

Feb. 09, 2017

Magnetic multilayer sheet

Applicant:

3m Innovative Properties Company, St. Paul, MN (US);

Inventors:

Xiaoming Kou, Woodbury, MN (US);

Michael S. Graff, Woodbury, MN (US);

Jeffrey M. Florczak, Granite Shoals, TX (US);

Steven L. Johnson, Brownwood, TX (US);

Rui Yang, Austin, TX (US);

Carlos A. Barrios, Woodbury, MN (US);

Steven D. Theiss, Woodbury, MN (US);

Kevin W. Gotrik, Hudson, WI (US);

Assignee:

3M Innovative Properties Company, St. Paul, MN (US);

Attorney:

Janet A. Kling

Primary Examiner:

Megha M Gaitonde

Int. Cl.
CPC ...
B32B 7/025 (2019.01); H01F 1/147 (2006.01); B32B 9/04 (2006.01); B32B 15/08 (2006.01); B32B 7/02 (2019.01); B32B 27/28 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); H01F 3/02 (2006.01);
U.S. Cl.
CPC ...
H01F 1/147 (2013.01); B32B 7/02 (2013.01); B32B 7/12 (2013.01); B32B 9/04 (2013.01); B32B 15/08 (2013.01); B32B 27/08 (2013.01); B32B 27/281 (2013.01); B32B 27/32 (2013.01); B32B 27/36 (2013.01); H01F 3/02 (2013.01); B32B 2250/05 (2013.01); B32B 2250/24 (2013.01); B32B 2255/10 (2013.01); B32B 2255/20 (2013.01); B32B 2255/205 (2013.01); B32B 2255/28 (2013.01); B32B 2307/20 (2013.01); B32B 2307/206 (2013.01); B32B 2307/208 (2013.01); B32B 2307/732 (2013.01); B32B 2457/00 (2013.01); B32B 2457/08 (2013.01); B32B 2519/02 (2013.01);
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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