Expired Canadian patentCanada
Ethylene and vinyl acetate copolymer-based resin film with at least one rough face, and process for making same
CA 2039325 C · Owner: Solvay Industrial Foils Management And Research (Societe Anonyme) · Inventors: Dehennau, Claude; Vonk, Martin; Dupont, Serge
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordRead 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 March 28, 1991 and granted February 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 28, 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.
FiledMarch 28, 1991
GrantedFebruary 12, 2002
Term endedMarch 28, 2011
Patent numberCA 2039325 C
Classification (IPC)B29C49/04 +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.