Ream wrap comprising pla resin
CA 2428320 C · Owner: Arndt, William R. · Inventors: Mueller, Louann S.; Arndt, William R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high strength poly one side ream wrapper and method of producing such are disclosed. One of copolymer and terpolymer are coextruded with a PLA layer by feeding , these through a coextruder die to form a coextrudate. The coextrudate is applied to a , paper layer such that the one of copolymer and terpolymer is on the paper layer and the , PLA layer is on top of the one of copolymer and terpolymer layer. The one of copolymer , and terpolymer can contain PLA.
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 May 7, 2003 and granted November 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 2025.
- 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.