Pressure-sensitive adhesive constructions
CA 2251606 A1 · Owner: De Koning, Henk · Inventors: Sartor, Luigi; Sasaki, Yukihiko; Kian, Kamram
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein is a primerless removable pressure sensitive adhesive construction comprising an unprimed facestock a first adhesive layer in , contact with the facestock a second removable pressure sensitive adhesive layer in contact with the first adhesive layer and a release surface in , contact with the second adhesive layer. Advantageously constructions of this , design exhibit improved layflatness in comparison to conventional emulsion primed removable pressure sensitive adhesive constructions.
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 March 14, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 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.