Polyolefin film having barrier coating receiving surface and polyolefin film including such coating
CA 2125891 C · Owner: Applied Extrusion Technologies, Inc. · Inventors: Kolpak, Francis John; Fatica, Michael Gary; Comer, Annette Marie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A film having one or more polyolefin layers and a, barrier coating. At least one polyolefin layer has a surface for receiving barrier coatings, and which includes a polyolefin and a hydrocarbon resin; the barrier coating is situated adjacent to this surface. The film has a WVTR measured according to ASTM F1249-90, of less than about 0.47 gm/m2/day.
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 June 15, 1994 and granted September 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 15, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 15, 2016.
- 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.