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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 9108388 B1

PDFFull Text
Date of Patent:
Aug. 18, 2015

Filed:

Dec. 28, 2009

Broadband electromagnetic wave-absorber and process for producing same

Applicants:

Yoshihiro Egami, Osaka, JP;

Kunio Suzuki, Osaka, JP;

Takao Tsuduki, Osaka, JP;

Inventors:

Yoshihiro Egami, Osaka, JP;

Kunio Suzuki, Osaka, JP;

Takao Tsuduki, Osaka, JP;

Assignee:

TAYCA CORPORATION, Osaka, JP;

Attorney:

Millen, White, Zelano & Branigan, P.C.

Primary Examiner:

Peter Bythrow

Int. Cl.
CPC ...
H01Q 17/00 (2006.01); G01S 7/03 (2006.01); B32B 5/26 (2006.01); B32B 5/08 (2006.01); B32B 7/12 (2006.01); B32B 9/00 (2006.01); B32B 15/20 (2006.01); B32B 27/02 (2006.01); B32B 27/36 (2006.01); D06M 15/356 (2006.01); H05K 9/00 (2006.01); G01S 13/88 (2006.01);
U.S. Cl.
CPC ...
B32B 5/26 (2013.01); B32B 5/08 (2013.01); B32B 7/12 (2013.01); B32B 9/00 (2013.01); B32B 15/20 (2013.01); B32B 27/02 (2013.01); B32B 27/36 (2013.01); D06M 15/3562 (2013.01); D06M 15/3566 (2013.01); H01Q 17/00 (2013.01); H01Q 17/004 (2013.01); H01Q 17/005 (2013.01); H05K 9/009 (2013.01); D06M 2200/00 (2013.01); G01S 7/03 (2013.01); G01S 7/032 (2013.01); G01S 13/88 (2013.01); Y10T 156/10 (2015.01);
Abstract

Disclosed is an electromagnetic wave absorbent which exhibits high electromagnetic wave absorption performance over a wide band. The electromagnetic wave absorbent contains a conductive fiber sheet which is obtained by coating a fiber sheet base with a conductive polymer and has a surface resistivity within a specific range. The conductive fiber sheet is formed by impregnating a fiber sheet base such as a nonwoven fabric with an aqueous oxidant solution that contains a dopant, and then bringing the resulting fiber sheet base into contact with a gaseous monomer for a conductive polymer, so that the monomer is oxidatively polymerized thereon.

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