Granted Patent
Utility
US 6,091,406 · App. 08/998,051
Grating transducer for acoustic touchscreens
Inventors:
Shigeki Kambara, Hiroshi Kaneda, Robert Adler, Joel C. Kent, Bruce W. Maxfield, Masao Takeuchi
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: Dec 24, 1997
Inventors
Shigeki Kambara
Hiroshi Kaneda
Robert Adler
Joel C. Kent
Bruce W. Maxfield
Masao Takeuchi
Assignee (at issue)
ELO TouchSystems, 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.