Granted Patent
Utility
US 6,617,076 · App. 09/820,969
Separator for nonaqueous secondary battery and nonaqueous secondary battery using the same
Inventors:
Yukihiro Wataru, Takashi Aoki
Patented Case
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Granted: Sep 9, 2003
Filed: Mar 30, 2001
Inventors
Yukihiro Wataru
Takashi Aoki
Assignees (at issue)
Japan Storage Battery Co., Ltd.
GS-Melcotec Co., Ltd.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.