Vinyl based coatings for foamed materials
CA 2038670 A1 · Owner: Rowell, Richard T. · Inventors: Rowell, Richard T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to novel coating compositions for use on preformed foam products comprising an aqueous admixture of a PVC copolymer dispersion and a polyurethane dispersion together with suitable additives as wetting agents, pigments dispersants, fillers and the like. The coating compositions may be applied by dipping spraying, or any, other suitable application means well known to those skilled in the art.
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 March 20, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 20, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2013.
- 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.