Acoustic search device
CA 2079595 A1 · Owner: Transducer Valley, Inc. · Inventors: Noponen, Seppo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Acoustic, particularly ultrasonic search device comprising an, ultrasonic transducer (1) or the like a display (3) and an, electronic unit (4) wherein the ultrasonic transducer (1) or the like consists of several elements (2), which function as transmitters and/or receivers of acoustic signals, and which elements (2) are arranged to function, under the control of the electronic unit (4), so that a display image (7) of the viewed search area is obtained on the display (3) based on the echo signals reflected from the viewed search area. The search device additionally comprises an optical viewing device (6) by means of which the display image (7) is arranged to be seen. The display image which …
Read the whole patent
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 3, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 3, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 3, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.