Granted Patent
Utility
US 5,417,839 · App. 08/287,837
Method for manufacturing aluminum foils used as electrolytic capacitor electrodes
Inventors:
Masashi Sakaguchi, Tadao Fujihira, Kiyoshi Tada, Hisatsugu Nakaya, Shozo Umetsu, Takashi Tamura
Patented Case
View Patent ↗
Granted: May 23, 1995
Filed: Aug 9, 1994
Inventors
Masashi Sakaguchi
Tadao Fujihira
Kiyoshi Tada
Hisatsugu Nakaya
Shozo Umetsu
Takashi Tamura
Assignee (at issue)
Showa Aluminum Corp.
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.