Image enhancement
CA 2128787 A1 · Owner: De La Rue International Limited · Inventors: Kay, Ralph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of enhancing an image (11) provided by a thermoplastic marking material on a substrate (4) which material can be thermally activated to take on adhesive properties. The method comprises bringing a transfer medium (7) into contact with the substrate (4) carrying the marking material, the transfer medium including a carrier (3) and a transferrable layer (15 16), the transferrable, layer being positioned in use between the carrier and the substrate; thermally activating the adhesive property of the marking material; and separating the carrier (13) and substrate (4) whereby areas of the transferrable layer containing the activated marking material remain on the marking material …
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 10, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 10, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 10, 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.