Coating composition
CA 2333636 A1 · Owner: Ppg Industries Ohio, Inc. · Inventors: Lam, Peter Kwok Hing; Fenn, David Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coating composition comprising a solution in a volatile organic solvent of: i) a polyisocyanate, ii) a hydroxyl functional polymer the polyisocyanate , comprising a mixture of an aliphatic polyisocyanate having an average isocyanate functionality of 2.5 or more and diphenylmethane diisocyanate.
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 December 23, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 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.