Lenseless focussed transducer
CA 1315870 C · Owner: Nicholson, Patrick S. · Inventors: Van Den Andel, Jan; Nicholson, Patrick S.; Patel, Narendra D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A focusing element for use in a lenseless focused transducer for producing a, focused ultrasonic beam comprises a body formed of electrical insulating material and a plurality of piezoelectric elements disposed in one end of the body each element, being planar, extending outwardly from a common axis and being disposed at a, predetermined angle to the common axis whereby to define a common focal point onthe axis and electrical conductors secured to the piezoelectric element for electrically exciting the elements.
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
- Granted April 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 2010.
- 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.