Impact-modified polyamide film
CA 2535348 C · Owner: Doty, James K. · Inventors: Doty, James K.; Bushelman, Corinne; Warkoski, Gregory
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A film comprising, as sole layers, either at least one layer L1 comprising a polyphthalamide and a functionalized polyolefin impact modifier or (1) at , least one layer L1 comprising a polyphthalamide and a functionalized polyolefin impact modifier, and (2) at least one layer L2 comprising an aliphatic polyamide, characterized in that the film has a thickness of from 15 to 900 microns and wherein said functionalized polyolefin impact modifier is comprised in said layer L1 from 5 to 40 weight % based on the total weight of , L1. Also a method for making a film having a thickness of from 15 to 900 microns comprising extruding the polyphthalamide and the functionalized polyolefin impact …
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 August 17, 2004 and granted October 7, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 17, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2026.
- 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.