Crosslinking base layer for bondable interlinings in accordance with the double dot technique
CA 2263180 A1 · Owner: Losensky, Hans-Willi · Inventors: Gurke, Thorsten; Losensky, Hans-Willi; Simon, Ulrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a crosslinkable hotmelt adhesive composition for the coating and/or lamination of sheet-like structures, where a crosslinking component is protected by a polyolefin matrix and is not crosslinked until the composition is melted. The crosslinking component may be a polyisocyanate or epoxide and a main reactive component of the adhesive composition may be an amine-terminated copolyamide or OH-terminated copolyester. Since the crosslinking component is protected by the polyolefin metrix, it does not react with water even when the adhesive composition is used as an aqueous paste, until it is melted.
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 1, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 1, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 2021.
- 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.