Improved security thread and method and apparatus for applying same to a substrate
CA 2290019 A1 · Owner: Agra Vadeko Inc. · Inventors: Walsh, Nigel P. W.; Disano, John Nicholas; Brett, Tom D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Applied to a substrate such as paper banknotes is a thread which includes a PET carrier layer with release layers on both surfaces of the carrier layer and a, metallic layer outward of one release layer. An adhesive layer lies outward of the, metallic layer. When a substrate is brought into contact with the adhesive layer, the, result is to bond the metallic layer to the substrate. Following this the PET , carrier, layer is peeled away leaving the metallic layer bonded to the substrate. An apparatus for accomplishing these steps includes means for bringing the substrate, into contact with the adhesive layer and means for peeling the PET carrier layer, away so that it separates from the …
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 November 18, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 18, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 2021.
- 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.