Water resistant, removable acrylic emulsion pressure sensitive adhesive
CA 2127281 C · Owner: Mayer, Andre · Inventors: Keller, Paul; Mayer, Andre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A water-resistant, removable pressure sensitive adhesive for use with transparent film facestocks comprises an acrylicbased emulsion polymer composition comprising 85 to 97 % by weight alkyl acrylate monomers, up to 3 % by weight polar monomers, up to 1 % by weight internal crosslinking agent and up to 2% by weight external crosslinking 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 January 7, 1993 and granted December 2, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 7, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 7, 2015.
- 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.