Granted Patent
Utility
US 5,143,587 · App. 07/825,092
Method for etching an aluminum foil for an electrolytic capacitor
Inventors:
Eiji Endoh, Haruo Jinbo
Patented Case
View Patent ↗
Granted: Sep 1, 1992
Filed: Jan 24, 1992
Inventors
Eiji Endoh
Haruo Jinbo
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.