Heatset intaglio printing ink
CA 2109108 A1 · Owner: Glesias, Walter J. · Inventors: Glesias, Walter J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a heatset printing ink for the printing of documents by the method of engraved steel die printing. The ink is formulated from (i) an epoxy resin (ii) an epoxy resin, ester reacted with a mixture of one or more unsaturated monobasic acids and one or more reactive monomers or a mixture of (i) and, (ii), together with one or more pigments a glycol or glycol ether, solvent, a drier and an amine curing agent. The ink is especially useful for the printing of security documents particularly, currency.
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 April 15, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 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.