Granted Patent
Utility
US 6,421,228 · App. 09/849,197
Manufacturing method of solid electrolytic capacitor
Inventor:
Kenji Araki
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: May 4, 2001
Inventor
Kenji Araki
Assignee (at issue)
NEC TOKIN Toyama, 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.