Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Separator – retainer or spacer insulating structure
Reexamination Certificate
2008-07-08
2008-07-08
Ryan, Patrick (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Separator, retainer or spacer insulating structure
C429S129000, C429S130000, C429S131000, C429S132000, C429S133000
Reexamination Certificate
active
07396612
ABSTRACT:
A lithium ion secondary battery includes a positive electrode capable of absorbing and desorbing lithium ion, a negative electrode capable of absorbing and desorbing lithium ion, a porous film interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte: the porous film being adhered to a surface of at least one of the positive electrode and the negative electrode; the porous film including a filler and a resin binder; the resin binder content in the porous film being 1.5 to 8 parts by weight per 100 parts by weight of the filler; and the resin binder including an acrylonitrile unit, an acrylate unit, or a methacrylate unit.
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United States Office Action issued in U.S. Appl. No. 11/339,617, mailed Jul. 12, 2007.
Fujino Akiko
Fukunaga Masao
Hayashi Tetsuya
Ikuta Shigeo
Nakajima Junji
Lee Cynthia
Matsushita Electric - Industrial Co., Ltd.
McDermott Will & Emery LLP
Ryan Patrick
LandOfFree
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