Thermoplastic olefin polymer blend and adhesive films made therefrom
CA 2580686 C · Owner: Ross, Allen W. · Inventors: Ross, Allen W.; Mcgee, Robert L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Blend an ethylene/alkyl acrylate copolymer and an ethylene/.alpha..beta.ethylenically unsaturated carboxylic acid copolymer in a weight ratio of more than 1:1 and convert the blend to a film that has adhesive properties. The film is particularly suitable for use as an external adhesive layer in a multilayer film structure. Such multilayer film structures may be used for , example as a strippable protective film for any of a variety of surfaces such as freshly painted metal surfaces.
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, 2005 and granted January 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 26, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.