Shrink film with good ink adhesion
CA 2256740 C · Owner: W.R. Grace & Co.-Conn · Inventors: Ecoff, Martin J.; Segura, Tracie P.; Wilburn, Daniel S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A film, having two major surfaces, includes an outer layer including a copolymer of ethylene and a C3 to C10 alpha olefin wherein at least one , surface has a silicone coating of between 0.1 and 1.2 milligrams per square feet. Multilayer films can also be provided. Films with a combination of good machinability and ink adhesion are obtained. Films with good shrink properties, in combination with good machinability and ink adhesion are also , obtained.
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 4, 1997 and granted July 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 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.