Acoustic power transmitting unit for thermoacoustic systems
CA 2565573 C · Owner: Francois, Maurice-Xavier · Inventors: Francois, Maurice-Xavier; Bretagne, Emmanuel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an acoustic power transmitting unit for thermoacoustic systems comprising at least on stage ptovided with at least two thermoacoustic units (3 4, 12-16) each of which comprises a regenerator or a stack and two heat exchangers an acoustic resonator comprising a tube and containing a fluid and in which a magnetic field consisting of high impedance and low-impedance areas is arranged wherein certain thermoacoustic units (3 4, 12-16) are placed in high dimensionless impedance areas. According to said invention each high dimensionless impedance area also comprises a thermoacoustic unit wherein two successive thermoacoustic units (3 4, 12-16) are always separated by low …
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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 May 3, 2005 and granted January 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 3, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.