Fluorocarbon-based coating compositions and articles derived therefrom
CA 2030221 A1 · Owner: Minnesota Mining And Manufacturing Company · Inventors: Pellerite, Mark J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to release liners and more, particularly, to release liners suitable for use with highly aggressive pressure-sensitive adhesives. Certain pressure-sensitive adhesives, particularly those derived from silicone resins, are so aggressive that tapes employing them exhibit undesirably high peel forces upon removal from known low-adhesion coatings especially after, prolonged storage or when used in a high-temperature environment. The adhesive of such tapes may carry away and consequently, be contaminated by appreciable amounts of the low-adhesion material. If this occurs the tapes, will exhibit poor readhesion when applied to "end-use" receptor surfaces. This invention …
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 November 19, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 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.