Canadian application, no grantCanada
High molecular weight polymers containing pendant salicylic acid groups
CA 2434971 A1 · Owner: Mahoney, Robert P. · Inventors: Mahoney, Robert P.; Quadir, Murat; Phillips, Everett C.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
High molecular weight polymers comprising salicylic acid groups are useful for clarifying red mud-containing liquors generated in the Bayer process for the recovery of alumina from bauxite.
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 December 19, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 19, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 2023.
- 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 19, 2001
GrantedNo grant recorded
Term endedDecember 19, 2021
Patent numberCA 2434971 A1
Classification (IPC)C08F20/58 +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.