Radiation curable compositions and method of use
CA 2090288 C · Owner: Fowler, Dawn · Inventors: Cornforth, David Arthur; Renz, Walter Louis; Fowler, Dawn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improved radiation curable compositions are provided which comprises N-vinylformamide and an oligomer selected from the group consisting of epoxy-acrylate resins, polyester acrylate resins polyurethane acrylate, resins and mixtures thereof. A photoinitiator is also added to the composition. A process is also provided whereby the composition is applied to the surface of a substrate and subsequently exposed to a radiation source until an adherent dry polymerized film is formed on the substrate. These compositions are useful as pigmented and unpigmented coatings printing inks, adhesives and the like.
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 February 24, 1993 and granted July 8, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 24, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 24, 2015.
- 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.