Granted Patent
Utility
US 6,459,564 · App. 09/490,833
Electrical double layer capacitor and portable electronic apparatus equipped with electrical double layer capacitor
Inventors:
Shunji Watanabe, Hideharu Onodera, Tsugio Sakai, Toyoo Harada, Yoshimi Kanno, Shinichi Takasugi, Tsuneaki Tamachi
Patented Case
View Patent ↗
Granted: Oct 1, 2002
Filed: Jan 25, 2000
Inventors
Shunji Watanabe
Hideharu Onodera
Tsugio Sakai
Toyoo Harada
Yoshimi Kanno
Shinichi Takasugi
Tsuneaki Tamachi
Assignee (at issue)
SEIKO INSTRUMENTS INC.
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.