Expired Canadian patentCanada
Method for inerting mineral residues
CA 2467750 C · Owner: Depelsenaire, Guy · Inventors: Depelsenaire, Guy
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for inerting mineral residues comprising motor vehicle scrap residues which consists in adding water to the mineral residues to form a paste mixing the paste with phosphoric acid and calcining said mixture.
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 November 20, 2002 and granted April 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 20, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 20, 2002
GrantedApril 3, 2012
Term endedNovember 20, 2022
Patent numberCA 2467750 C
Classification (IPC)B09B3/70 +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.