Simulated security thread by cellulose transparentization
CA 2396367 A1 · Owner: The Standard Register Company · Inventors: Washburn, David E.; Mehta, Rajendra; Gullett, Watson L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A security document is provided comprising a finished cellulosic substrate having, at least one transparentized portion formed therein. The transparentized portion, comprises a transparentizing composition that is applied so as to define an area of, increased transparency in the substrate. The area of increased transparency includes, at least one thin line and resembles a simulated security thread. The transparentizing, composition can be applied to form thin lines in a variety of configurations on one or, both sides of the substrate.
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 July 31, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 31, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2024.
- 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.