Granted Patent
Utility
US 5,071,521 · App. 07/578,161
Method for manufacturing a solid electrolytic capacitor
Inventors:
Toshikuni Kojima, Masao Fukuyama, Sohji Tsuchiya, Yasuo Kudoh
Patented Case
View Patent ↗
Granted: Dec 10, 1991
Filed: Sep 6, 1990
Inventors
Toshikuni Kojima
Masao Fukuyama
Sohji Tsuchiya
Yasuo Kudoh
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, 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.