Hot-melt compositions based on ethylene/methyl acrylate copolymers which have good open time, form creep-resistant bonds, and demonstrate strength at elevated temperatures when applied in thin layers
CA 2082540 A1 · Owner: Minnesota Mining And Manufacturing Company · Inventors: Hansen, Dennis D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A hot-melt composition consists essentially of an ethylene/methyl acrylate copolymer and a tackifying resin. When deposited on an unheated substrate in a thin layer, the composition has a limited open time of at least 5 seconds a creep, resistance of 10,000 minutes, and an elevated temperature strength of at least 1,000 minutes.
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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 10, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2014.
- 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.