Thin film acoustic array
CA 2242608 C · Owner: Morris, Richard F. · Inventors: Morris, Richard F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An acoustic array of independently sensitive detecting elements is produced by locating a pattern of electrodes on a piezoelectric polymer film. Sensitivity of the film and a spaced away supporting structure are used to reduce artifacts caused by acoustic reflection in the supporting structure.
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 August 17, 1998 and granted June 25, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2020.
- 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.