Water-based coating composition
CA 2115091 A1 · Owner: Takimoto, Masaaki · Inventors: Izumi, Minao; Takimoto, Masaaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A water-based coating composition is disclosed comprising, (1) a self-emulsified polyurethane resin emulsion (2) a resin which is either (i) a polymer of an oxazoline represented by formula (I):, (I), wherein R1 R2, R3, and R4 each represents a hydrogen atom a, halogen atom, an alkyl group, a phenyl group or a, substituted phenyl group; and R5 represents a non-cyclic organic group having an addition-polymerizable unsaturated bond or (ii) a copolymer of the oxazoline and a monomer which is not reactive to an oxazoline group, and (3) a self-emulsifiable epoxy resin. - 69 -
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 February 7, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 7, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 2016.
- 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.