Acoustic touchscreen having waveguided reflector arrays
CA 2410069 A1 · Owner: Gomes, Paulo Irulegui · Inventors: Kent, Joel; Gomes, Paulo Irulegui; Aroyan, James L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An acoustic touchscreen (1a) has transmitting transducers (23a 23b) for , generating acoustic signals which are deflected across a touch-sensitive area (2) by an array (13) of partially acoustically reflective elements (14). A touch on the touch-sensitive area causes a perturbation in the acoustic signals. After traversing the touch-sensitive area the acoustic signals are , redirected by another array (13) of partially acoustically reflective elements (14), towards receiving transducers (26a 26b), where the signals (and any , perturbations) are sensed. To accommodate touchscreens having narrow border regions (15a), the acoustic signals are propagated across the border regions using …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed April 4, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 4, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 4, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.