Chemistry: electrical current producing apparatus – product – and – Plural concentric or single coiled electrode
Reexamination Certificate
2006-07-04
2006-07-04
Alejandro, Raymond (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Plural concentric or single coiled electrode
C429S162000, C429S161000, C429S185000
Reexamination Certificate
active
07070880
ABSTRACT:
A positive electrode plate (11) and a negative electrode plate (12) are coiled around into a flat shape such that positive electrode layer faces (22a–22e) and negative electrode layer faces (23a–23f) are alternately layered upon one another with a separator interposed therebetween. Positional discrepancy detecting holes (41a, 41b, 42, 43, 44) are formed in the positive electrode layer faces (22a, 22b) and negative electrode layer face (23a) facing each other at the coiling start end, and in the positive electrode layer face (22e) and negative electrode layer face (23f) facing each other at the coiling finish end. The electrode plates are coiled into an electrode plate group, which is subjected to X-ray inspection for detecting positional displacement based on a discrepancy in the positions of the holes.
REFERENCES:
patent: 2001/0041289 (2001-11-01), Hikmet et al.
patent: 2002/0064710 (2002-05-01), Kawakami et al.
patent: 53-149630 (1978-12-01), None
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patent: 2002-134096 (2002-05-01), None
Hayashi Tetsuya
Hiranaga Kazuyuki
Ogawa Satoshi
Sakamoto Shin'ichi
Teraoka Takahiro
Alejandro Raymond
Jordan and Hamburg LLP
Matsushita Electric Industrial Co., ltd.
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