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 11968816 B1

Date of Patent:

Apr. 23, 2024

Filed:

Jul. 22, 2020

Magnetic field shielding sheet

Applicant:

Amosense Co., Ltd., Cheonan-si, KR;

Inventor:

Kil Jae Jang, Cheonan-si, KR;

Assignee:

AMOSENSE CO., LTD., Cheonan-si, KR;

Attorney:

ROTHWELL, FIGG, ERNST & MANBECK, P.C.

Primary Examiner:

Carlos Amaya

Int. Cl.

CPC ...

H05K 9/00 (2006.01); B32B 3/26 (2006.01); B32B 7/12 (2006.01); B32B 15/04 (2006.01); H02J 50/20 (2016.01); H02J 50/70 (2016.01);

U.S. Cl.

CPC ...

H05K 9/0075 (2013.01); B32B 3/266 (2013.01); B32B 7/12 (2013.01); B32B 15/043 (2013.01); H02J 50/20 (2016.02); H02J 50/70 (2016.02); B32B 2307/212 (2013.01); B32B 2307/732 (2013.01); B32B 2457/00 (2013.01);

Abstract

A magnetic field shielding sheet according to one embodiment is a magnetic field shielding sheet for an antenna that includes a hollow portion formed in a central region and having a predetermined area and a pattern portion surrounding the hollow portion. The magnetic field shielding sheet includes a sheet body formed as a multi-layer sheet in which a plurality of sheets are stacked in multiple layers with adhesive layers therebetween, wherein the sheet body is a multi-layer sheet in which the plurality of sheets having a relatively lower magnetic permeability while having a relatively higher surface resistance along a stacking direction are sequentially stacked.

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