Process for the production of coatings
CA 2002253 C · Owner: Clemens, Horst · Inventors: Meixner, Jurgen; Sickert, Armin; Clemens, Horst
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coating is obtained on a substrate by applying to the substrate a composition containing as a binder an unsaturated polyester and hardening the coating by infra-red radiation wherein the binder is a monomer-free olefinically unsaturated polyester resin having a viscosity of 2,000 to 5,000 mPa.s at 23°C and consists essentially of the esterification reaction product of:, A) 1.0 mol of an unsatured dicarboxylic acid component selected from the group consisting of malefic acid malefic anhydride, fumaric acid and mixtures thereof B) 0.5 to 1.2 mol of a dial component which is a dihydric alcohol with 2 to 8 carbon atoms, C) 0.5 to 1.1 mol of at least one unsaturated ether component which is a …
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 6, 1989 and granted July 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 6, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 2011.
- 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.