Coating composition and metal coil coating process employing same
CA 2083235 C · Owner: Morton International, Inc. · Inventors: Soltwedel, Jeffrey N.; Moyle, Richard T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Coating composition especially useful for high gloss coating of untreated, bright, sealed, anodized metal substrates particularly coils of such metal, comprises a catalyst-free composition comprising a high gloss, thermosetting hydroxyl, group-containing fluorocarbon polymer a cross-linking agent, comprising a blocked aliphatic polyisocyanate a partially, self-condensing, highly methylated melamine-formaldehyde resin or a mixture of the blocked polyisocyanate and melamine-formal-dehyde resin, butanol solvent, an ultraviolet screening agent an ultraviolet stabilizer acting as free radical scavenger and, optionally one or more of the following components: polysiloxane slip and flow and …
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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 18, 1992 and granted January 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 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
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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.