Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Cell enclosure structure – e.g. – housing – casing – container,...
Reexamination Certificate
2007-02-26
2010-06-08
Yuan, Dah-Wei D (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Cell enclosure structure, e.g., housing, casing, container,...
C429S161000, C429S175000, C429S181000
Reexamination Certificate
active
07732091
ABSTRACT:
A lithium ion secondary battery in which at least one step portion is formed on an upper surface of a cap plate, and at least one step portion is formed on a lower or first surface of a battery part opposite to the upper or first surface of the cap plate so that the at least two step portions are complementary. The complementary step portions of the cap plate of the bare cell and the battery part provided at an upper part of the cap plate result in easy coupling of the battery part to the bare cell and stable maintenance of the coupling between the battery part and the bare cell. The coupling structure results in greater ease in performing subsequent manufacturing processes and protects the bare cells coupled to the battery part from dislodging.
REFERENCES:
patent: 6432575 (2002-08-01), Yamagami
patent: 2002/0071986 (2002-06-01), Exnar
patent: 2005/0106454 (2005-05-01), Kozu et al.
patent: 2006/0083982 (2006-04-01), Jung et al.
patent: 07-220716 (1995-08-01), None
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patent: 10-571247 (2006-04-01), None
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English Abstract for Korean Patent Publication No. 2006-29750.
U.S. Appl. No. 11/250,619, filed Oct. 17, 2005, Sang-Sok Jung et al., Samsung SDI Co., Ltd.
Davis Patricia
Samsung SDI & Co., Ltd.
Stein McEwen, LLP
Yuan Dah-Wei D
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