Ultrasonic transducer
CA 2185073 C · Owner: Eckert, Manfred · Inventors: Eckert, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This ultrasonic transducer has a high chemical resistance and a small diameter and can be used over a very wide temperature range. It has a single-piece can-, shaped housing (1) sealed off by a diaphragm (12) a, sensor element (2), arranged in the housing (1) for, transmitting and receiving ultrasound a matching layer, (3) arranged between the diaphragm (12) and the sensor element (2), a stress equalizing layer (5) which completely encloses the sensor element (2) apart from a front area adjoining the matching layer (3) and is made of a thermosetting plastic, especially of an epoxy resin a clamping ring (4) coaxially enclosing the matching layer (3), and a damping layer (6) that fills a …
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 September 9, 1996 and granted September 7, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 9, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 9, 2018.
- 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.