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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 10602646 B1

PDFFull Text
Date of Patent:
Mar. 24, 2020

Filed:

Oct. 28, 2016

Method for preparing magnetic iron oxide-graphene composite

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Se Ho Park, Daejeon, KR;

Kwon Nam Sohn, Daejeon, KR;

Won Jong Kwon, Daejeon, KR;

Seung Bo Yang, Daejeon, KR;

Assignee:

LG Chem, Ltd., , KR;

Attorney:
Primary Examiner:

Hoa (Holly) Le

Int. Cl.
CPC ...
B32B 5/16 (2006.01); H05K 9/00 (2006.01); C01G 49/08 (2006.01); C01G 49/06 (2006.01); C01B 32/184 (2017.01); H01F 1/00 (2006.01); H01F 1/01 (2006.01); B82Y 25/00 (2011.01); B82Y 40/00 (2011.01);
U.S. Cl.
CPC ...
H05K 9/0075 (2013.01); C01B 32/184 (2017.08); C01G 49/06 (2013.01); C01G 49/08 (2013.01); H01F 1/009 (2013.01); H01F 1/01 (2013.01); B82Y 25/00 (2013.01); B82Y 40/00 (2013.01); C01P 2004/03 (2013.01); C01P 2004/04 (2013.01); C01P 2004/24 (2013.01); C01P 2004/51 (2013.01); C01P 2004/80 (2013.01); C01P 2006/42 (2013.01); H01F 1/0063 (2013.01); Y10S 977/734 (2013.01); Y10S 977/811 (2013.01); Y10S 977/842 (2013.01); Y10S 977/896 (2013.01); Y10S 977/902 (2013.01);
Abstract

The present invention relates to a method for preparing a magnetic iron oxide-graphene composite, a magnetic iron oxide-graphene composite prepared thereby and a composition for electromagnetic wave shielding including the same, and since graphene is prepared from a stage 1-GIC using FeCl, magnetic particles in the form of FeOare naturally formed on the surface of graphene during the preparation process. In addition, a magnetic material is formed on the surface of graphene while the defects of graphene are minimized, and thus the magnetic iron oxide-graphene composite prepared according to the present invention can be useful as an electromagnetic wave absorber.

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