Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Cell enclosure structure – e.g. – housing – casing – container,...
Reexamination Certificate
2005-10-14
2009-06-09
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,...
C429S174000, C429S185000, C429S070000, C429S081000
Reexamination Certificate
active
07544440
ABSTRACT:
A secondary battery includes an electrode assembly having a positive electrode, a negative electrode and a separator interposed between the positive and negative electrodes and a container for receiving the electrode assembly inside thereof. The secondary battery also includes a cap assembly fixed to the container to seal the container and a gasket disposed between the container and the cap assembly. The gasket has at least one concavo-convex portion on a surface contacting the container and/or the cap assembly. This improved gasket structure enhances the air tightness of the secondary battery.
REFERENCES:
patent: 2004/0126656 (2004-07-01), Cho
patent: 1508891 (2004-06-01), None
patent: 05-246457 (1993-09-01), None
patent: 10-199495 (1998-07-01), None
patent: 2000-353503 (2000-12-01), None
Patent Abstracts of Japan for Publication No. 10-199495; Date of publication of application Jul. 31, 1998, in the name of Maeda Noriji et al.
Cheon Sang-Eun
Kim Jae-Kyung
Yoo Seok-Yoon
Yoon Hye-Won
Christie, Perker & Hale, LLP
Samsung SDI & Co., Ltd.
Suitte Bryant
Yuan Dah-Wei D
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