Metallized films
CA 2233004 C · Owner: Applied Extrusion Technologies, Inc. · Inventors: Fatica, Michael G.; Singh, Nand K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A biaxially oriented, heat-set, multilayer film includes a core layer a , bonding layer having a surface adhered to the core layer and a flame-treated surface opposite the surface adhered to the core layer. A metal coating for providing oxygen and moisture barrier properties deposited on the flametreated surface and a protective plastic film adhered to said metal coating. The core layer and bonding layer either are free of void-creating additives or include only a quantity of such additives that does not create a matte surface adversely affecting the barrier properties of the metal coating. The bonding layer comprising a mixture including 40 to 100 % by weight of propylene/butene- 1 …
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 September 26, 1996 and granted June 11, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 26, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 26, 2018.
- 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.