Granted Patent
Utility
US 4,757,424 · App. 07/099,019
Electric double layer capacitor
Inventors:
Takeshi Morimoto, Kazuya Hiratsuka, Yasuhiro Sanada, Hiroshi Aruga
Patented Case
View Patent ↗
Granted: Jul 12, 1988
Filed: Sep 21, 1987
Inventors
Takeshi Morimoto
Kazuya Hiratsuka
Yasuhiro Sanada
Hiroshi Aruga
Assignees (at issue)
ASAHI GLASS CO., LTD.
ELNA 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.