Coating for printed substrate
CA 2098589 C · Owner: Fritz, Thomas M. · Inventors: Fritz, Thomas M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A non-aqueous composition is provided herein for use as a waterproof coating for a printable substrate. The composition comprises a mixture of polyurethane and an oleoresinous varnish, preferably in a weight ratio of 1:16 to 1:10. It has been found that such waterproof coating imparts colour enrichment to the printed substrate relative to a printed substrate having only a varnish coating. The waterproof coating further imparts at least 35% higher gloss to the substrate relative to a printed substrate having only a varnish coating.
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 16, 1991 and granted May 12, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 16, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 16, 2013.
- 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.