Direct thermal imaging on plastic film
CA 2502879 A1 · Owner: Finger, John · Inventors: Finger, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a means to produce an image in gray scale on a film using direct thermal imaging, and preferably near infrared direct thermal imaging. The present invention provides a multi-layered laminated, non-, cavitated film that has proper surface characteristics and heat transfer properties by virtue of the proper combination of polymeric layers and coatings, in particular, the active direct thermal coating and topcoat which , produce direct thermal imaging with gray scale. Such a film may be used for temporary personal identification devices for instance, hospital wristbands , and backstage passes and may incorporate bar code data, photographs as well as other …
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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 October 2, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 2, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2025.
- 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.