Encoded paper for optical reading
CA 2384302 A1 · Owner: Edso, Tomas · Inventors: Edso, Tomas; Pettersson, Mats Petter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A product provided with a coding pattern which comprises a plurality of marks each of which represents one of at least two different values and which , further comprises a plurality of nominal positions each of said plurality of , marks being associated with a nominal position and the value of each mark being determined by its location relative to its nominal position. The invention also comprises use of the product.
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 October 2, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 2, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2022.
- 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.