Silane functional oligomer
CA 2093687 A1 · Owner: Davies, Stephen P. · Inventors: Davies, Stephen P.; Fenn, David R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Silane Functional Oligomer A silane functional oligomer for use in the formulation of coating compositions having good clarity which has at least one hydrolysable silane group and which is the reaction product of ;, (i) a silane coupling agent having a hydrolysable silane group and a secondary amine group, (ii) a polyisocyanate having more than one tertiary isocyanate group, and containing at least 6% by weight of NCO groups, and, (iii) optionally, compound having single isocyanate reactive group.
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 April 8, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 8, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 2015.
- 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.