Canadian application, no grantCanada
Process for the preparation of polyolefin nanocomposites
CA 2503579 A1 · Owner: Dean, Katherine Maree · Inventors: Pfaendner, Rudolf; Li, Guoxin; Mayadunne, Roshan Tyrrel Anton
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 instant invention discloses a process for the preparation a polyolefin nanocomposite which comprises melt mixing a mixture of a polyolefin a filler , and a non-ionic surfactant.
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 3, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 3, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 3, 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.
FiledNovember 3, 2003
GrantedNo grant recorded
Term endedNovember 3, 2023
Patent numberCA 2503579 A1
Classification (IPC)C01B33/44 +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.