Canadian application, no grantCanada
Polysiloxanes containing carbonate groups and modified with linear polyesters and their use as additives in coatings
CA 2297504 A1 · Owner: Goldschmidt Ag · Inventors: Josten, Wolfgang; Silber, Stefan
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 polysiloxanes containing carbonate groups and modified with linear polyesters and to their use as additives for coatings especially, radiation-curing coating materials.
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 January 31, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 31, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 31, 2000
GrantedNo grant recorded
Term endedJanuary 31, 2020
Patent numberCA 2297504 A1
Classification (IPC)C08G77/38 +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.