Granted Patent
Utility
US 6,508,137 · App. 09/804,826
Capacitance change-based input device and detection device
Inventor:
Katsutoshi Suzuki
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Mar 13, 2001
Inventor
Katsutoshi Suzuki
Assignee (at issue)
ALPS ELECTRIC 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.