Granted Patent
Utility
US 6,552,894 · App. 10/214,254
Electric double layer capacitor
Inventors:
Toshiyuki Matsuoka, Kenji Matsumoto, Tomokazu Shohoji, Kentaro Shibuya, Yoshio Yamamoto
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Aug 6, 2002
Inventors
Toshiyuki Matsuoka
Kenji Matsumoto
Tomokazu Shohoji
Kentaro Shibuya
Yoshio Yamamoto
Assignee (at issue)
HONDA MOTOR 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.