Cure on demand adhesives and window module with cure on demand adhesive thereon
CA 2330384 A1 · Owner: Hoffman, Dwight K. · Inventors: Hsieh, Harry W.; Mahdi, Syed Z.; Lin, Renhe R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In one embodiment the invention is an adhesive composition comprising a) a polymer having a flexible backbone and a reactive moiety capable of crosslinking, b) a particle comprising an active agent encapsulated in an encapsulating agent wherein the active agent comprises a catalyst for crosslinking of the reactive moiety, a curing agent for the reactive moiety an , accelerator for the curing reaction or a mixture thereof; and the encapsulating agent comprises a side chain crystallizable polymer wherein the active agent is not substantially extractable from the particle at ambient conditions in a first extraction after particle formation. In yet another embodiment the invention is a …
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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 April 27, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 27, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 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.