Isophorone-free fluorocarbon coating composition
CA 2126558 C · Owner: Hunt, Robin L. · Inventors: Hunt, Robin L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coating composition containing fluoropolymer adapted for roll coating is provided with a solvent system that is free of isophorone. The solvent system comprises an ester of an aromatic acid a high molecular weight ketone, a high molecular weight alcohol, a glycol ether ester, and a hydrocarbon solvent having a high evaporation rate.
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 December 18, 1992 and granted April 20, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 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.