Hydromassage bathtub with wide-beam ultrasound emission devices
CA 2174064 C · Owner: Onori, Roberto · Inventors: Onori, Roberto; Montangero, Enrico; Guzzini, Virgilio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydromassage bathtub with ultrasound micromassage system comprising a plurality of ultrasound emission devices (13 113) distributed over the walls of the bathtub. The ultrasound emission devices (13 113) comprise means (23, 26; 118, 125) for orientating the direction of emission of the ultrasounds into a wide beam at least 10 cm. wide at a distance of 20 cm. from the source. In case of conical beam the means orient the beam into a solid angle of not less than 30° and advantageously at least 50°. With one ultrasonic emitting element (24) inside the emission device the emission beam obtained is superior to the natural width or divergence of said element.
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 April 12, 1996 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 12, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 12, 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.