Optical sensing device for detecting optical features of valuable papers
CA 2646499 C · Owner: Okamoto, Kazuhiko · Inventors: Okamoto, Kazuhiko; Nago, Tokimi; Seki, Toru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical sensing device for detecting optical features of valuable papers in disclosed. The device contains first and second fourfold assemblies longitudinally arranged before and behind along a passageway for guiding the transported valuable paper. The first fourfold element has first and second photocouplers opposed to each other on the opposite sides of the passageway while the second fourfold element comprising third and fourth photocouplers opposed to each other is arranged on the opposite sides of the passageway. Each of the first second, third and fourth photocouplers have a light emitting element for emitting a light and a light receiving element for selectively receiving the …
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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 December 26, 2003 and granted July 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 26, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 26, 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.