Siliconized emulsion based pressure-sensitive adhesives
CA 2010112 C · Owner: Avery International Corporation · Inventors: Lee, Ivan S. P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided inherently tacky pressuresensitive adhesive polymers prepared by emulsion polymerization and containing an interpolymerized amount of a reactive silicone acrylate polymer an unsaturated, carboxylic acid one or more alkyl acrylates preferably, a mixture of butyl acrylate and 2-ethylhexyl acrylate. Methyl acrylate and vinyl acetate are optionally present. The polymers have initial repositionability long term permanence and excellent water resistance.
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 February 15, 1990 and granted February 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 15, 2012.
- 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.