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.

Date of Patent:
Mar. 20, 2018

Filed:

Aug. 10, 2012
Applicants:

Sang Woo Kim, Seoul, KR;

Byung Hee Hong, Seoul, KR;

Jaeboong Choi, Gyeonggi-do, KR;

Junmo Kang, Gyeonggi-do, KR;

Soon Hwi Hwang, Gangwon-do, KR;

Inventors:

Sang Woo Kim, Seoul, KR;

Byung Hee Hong, Seoul, KR;

Jaeboong Choi, Gyeonggi-do, KR;

Junmo Kang, Gyeonggi-do, KR;

Soon Hwi Hwang, Gangwon-do, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K 1/02 (2006.01); H05K 9/00 (2006.01); H05K 13/00 (2006.01); B32B 9/00 (2006.01); B32B 9/04 (2006.01); C01B 32/186 (2017.01); C01B 32/194 (2017.01);
U.S. Cl.
CPC ...
H05K 9/0081 (2013.01); B32B 9/005 (2013.01); B32B 9/007 (2013.01); B32B 9/04 (2013.01); B32B 9/045 (2013.01); C01B 32/186 (2017.08); C01B 32/194 (2017.08); H05K 1/0216 (2013.01); H05K 9/0088 (2013.01); H05K 13/00 (2013.01); B32B 2307/206 (2013.01); B32B 2307/212 (2013.01); B32B 2457/00 (2013.01); H05K 1/0201 (2013.01); H05K 2201/0323 (2013.01);
Abstract

The present invention relates to a passive layer including graphene for the attenuation of near-field electromagnetic waves and heat dissipation. The passive layer blocks electromagnetic waves radiated from an external electronic device or prevents electromagnetic waves generated in an electronic device from emitting to the outside. The passive layer is designed to reduce interference between transmission circuits of a device in the near-field region or influence such as malfunction caused by external electromagnetic waves. The present invention also relates to an electromagnetic device and a circuit board, each including the passive layer.


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