Canadian application, no grantCanada
Toughened ethylene (vinyl alcohol) copolymer resins
CA 2047995 A1 · Owner: Prejean, George Wyatt · Inventors: Prejean, George Wyatt
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ethylene/vinyl alcohol copolymers exhibit improved toughness when blended with terpolymers of alpha-olefin, acrylate and either partly neutralized carboxylic acid groups or carbon monoxide.
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 July 26, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 26, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 26, 1991
GrantedNo grant recorded
Term endedJuly 26, 2011
Patent numberCA 2047995 A1
Classification (IPC)C08L23/08 +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.