Canadian application, no grantCanada
Compositions of cationic polymers with amidinium groups and ionic liquids
CA 2479941 A1 · Owner: Degussa Ag · Inventors: Schmidt, Friedrich-Georg
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 relates to compositions containing an ionic liquid and a cationic polymer with cyclic non-aromatic units comprising an amidium group. The invention also relates to the use of said compositions.
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 February 19, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 19, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 19, 2003
GrantedNo grant recorded
Term endedFebruary 19, 2023
Patent numberCA 2479941 A1
Classification (IPC)C08K5/19 +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.