Radiant thermoacoustic membrane
CA 2548655 C · Owner: Ducharme, Robert · Inventors: Ducharme, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The thermo-acoustic radiant membrane is designed for use on a floor beneath a spa whirlpool or therapeutic bath, inertia base or similar. The membrane comprises a radiant layer made of a metallic film on which a layer of rubber granules of varying size are hot-laminated with a bitumen elastomer to which other components can be added such as wood mineral, synthetic, or plant fibres. The membrane is also provided with a water-impermeable layer to act as a vapour block. Said layer is made from polyethylene polypropylene, polyester or metal is resistant to tearing static crushing and tension and has a large capacity for stretching and is covered with bitumen elastomer. The bitumen elastomer …
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 May 30, 2006 and granted April 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 30, 2026.
- 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.