Coating compositions containing urethane and epoxy components and articles coated thereof
CA 2106204 A1 · Owner: Sondhe, Ratanjit S. · Inventors: Sondhe, Ratanjit S.; Pant, Bipin C.; Naik, Hemant A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An article is provided consisting of an epoxy base coat and a urethane top coat which is useful in pavement marking applications. The epoxy composition is a two-part 100, percent volatile free system containing one or more hardeners which are reacted with an epoxy component such as the glycidyl ether of bisphenol-A. The urethane composition is also a two-part, 100 percent volatile free system containing a polyisocyanate component and an intermediate component comprising a polylactone polyol, and/or a polyether poloyl a, polyester polyol, or a polyether-ester polyol an aliphatic, polyol chain extender and a moisture scavenger. The two-part epoxy composition can be applied to a road with the …
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 November 12, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 12, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 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.