Canadian application, no grantCanada
Polyvinyl acetate/allyl alcohol copolymers
CA 2023036 A1 · Owner: Gagnon, Steven D. · Inventors: Gagnon, Steven D.; Lind, Eric J.; Roginski, Gregory T.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Polyvinyl acetate/allyl alcohol copolymers uniformly dispersible in or miscible with polyether and polyester polyols and useful in preparing urethane foams. -36-
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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 August 9, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 9, 1990
GrantedNo grant recorded
Term endedAugust 9, 2010
Patent numberCA 2023036 A1
Classification (IPC)C08F216/08 +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.