Metallized film structure and its production
CA 2102675 C · Owner: Mobil Oil Corporation · Inventors: Johnson, James A.; Chang, Wei H.; Chu, Shaw-Chang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A metallized film combination of an oriented polymeric substrate layer having on one surface thereof a coating of a blend of (a) a vinyl alcohol homopolymer or, copolymer and (b) a vinylidene chloride copolymer the coating blend having a , metal, layer thereon. The method involves coating the substrate after the substrate has been, machine direction oriented and before the combination is transverse direction oriented, followed by TD orientation and finally by depositing a metal layer on the blend surface.
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 8, 1993 and granted February 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.