Film with substrate layer containing antiblocking agent
CA 2213362 A1 · Owner: Hayes, Gary J. · Inventors: Hayes, Gary J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A film includes a first outer layer comprising a polymeric material; a second outer layer including a polymeric material; and a substrate layer disposed between the first and second outer layers. The substrate layer includes a polymer and an antiblocking agent. Additional internal layers can be included, some or all of which can include a polymer and an antiblocking agent.
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 18, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 18, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 18, 2019.
- 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.