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:
Feb. 21, 2017

Filed:

Nov. 17, 2014
Applicant:

Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;

Inventors:

Ai Kawashima, Tokyo, JP;

Hiroyasu Fujita, Tokyo, JP;

Naoyuki Sekine, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 19/00 (2006.01); B32B 5/22 (2006.01); B32B 5/24 (2006.01); B32B 5/26 (2006.01); B32B 5/28 (2006.01); B32B 27/04 (2006.01); B32B 27/12 (2006.01); G01R 15/18 (2006.01); G01R 19/10 (2006.01); G01R 31/00 (2006.01); B32B 3/08 (2006.01); B32B 3/26 (2006.01); B64F 5/00 (2006.01); G01N 27/04 (2006.01);
U.S. Cl.
CPC ...
G01R 19/0092 (2013.01); B32B 3/08 (2013.01); B32B 3/266 (2013.01); B32B 5/22 (2013.01); B32B 5/24 (2013.01); B32B 5/26 (2013.01); B32B 5/28 (2013.01); B32B 27/04 (2013.01); B32B 27/12 (2013.01); G01R 15/181 (2013.01); G01R 19/10 (2013.01); G01R 31/008 (2013.01); B32B 2250/03 (2013.01); B32B 2250/05 (2013.01); B32B 2250/24 (2013.01); B32B 2250/40 (2013.01); B32B 2250/42 (2013.01); B32B 2250/44 (2013.01); B32B 2260/021 (2013.01); B32B 2260/023 (2013.01); B32B 2260/046 (2013.01); B32B 2262/106 (2013.01); B32B 2307/202 (2013.01); B32B 2457/00 (2013.01); B32B 2605/18 (2013.01); B64F 5/0045 (2013.01); G01N 27/045 (2013.01);
Abstract

Composite material sheets containing conductive fibers are laminated, and release films are interposed between the sheets so as to extend from one end to the center of the sheets. The sheets are heated under pressure to shape a composite material. Discrete conductive wires through which a measurement current is passed are connected to end surfaces of the respective layers in the composite material on the side on which the release films are interposed. A common conductive wire through which the measurement current is passed is connected to a surface of one of an uppermost layer and a lowermost layer at an end of the composite material opposite to the side on which the release films are interposed. A current is passed between the common conductive wire and the discrete conductive wires. Currents in the respective layers are sequentially or simultaneously measured using an ammeter.


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