Improved device and method for the ultrasonic detection of smooth surface lesions on tooth crown surfaces
CA 2334391 A1 · Owner: Feuerstein, Osnat · Inventors: Bab, Itai; Feuerstein, Osnat; Ziv, Vered Vivi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device and method for the detection of smooth surface lesions such as caries and tooth crown surface cracks on a tooth crown surface the device having an , ultrasonic surface wave transmitter/receiver comprising a focused ultrasonic transducer capable of transmitting at least partially focused ultrasonic surface waves along a tooth crown surface. Surface lesions encountered by the ultrasonic surface waves produce ultrasonic surface wave reflections which are receivable at the generator/receiver, thus enabling the presence of the lesion, and particularly small lesions to be detected. The ultrasonic surface wave generator/receiver includes a focused transducer having a focusing , …
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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 June 2, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 2, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 2, 2021.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.