Film-forming compositions
CA 2028346 A1 · Owner: Meldrum, Brian J. · Inventors: Meldrum, Brian J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Film-forming coating composition particularly useful for coating automobile bodies including a film-forming polymer a liquid dispersion, medium and a particulate material which is particles of titanium dioxide having an average size of from 0.01 to 0.15 micron. The particles of titanium dioxide have a coating of dense amorphous silica. In its most preferred form the coating composition contains a metal or a metallic pigment such as aluminium flake. The film-forming polymer can be an acrylic resin, an alkyd resin a polyester, a, polyurethane or an aminoplast resin.
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 October 23, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 23, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 2012.
- 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.