Expired Canadian patentCanada
Method for processing composite materials to enable recycling thereof
CA 2207441 C · Owner: Vallet, Andre · Inventors: Delmas, Michel; Fargere, Thierry; Sacher, Gilles
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for processing composite materials (matrix + reinforcing fibres) to enable recycling thereof. The method is useful for chemically upgrading materials and comprises exposing the materials to ozone.
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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 December 14, 1995 and granted February 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 14, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 14, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 14, 1995
GrantedFebruary 12, 2002
Term endedDecember 14, 2015
Patent numberCA 2207441 C
Classification (IPC)B29B17/02 +2 more
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.