Granted Patent
Utility
US 6,429,623 · App. 09/824,249
Power-supply unit incorporating an electric double layer capacitor, and a method of charging the electric double layer capacitor
Inventor:
Yuji Hanada
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Apr 3, 2001
Inventor
Yuji Hanada
Assignee (at issue)
Asahi Kogaku Kogyo Kabushiki Kaisha
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.