Method and apparatus for validating a paper-like piece
CA 2019165 C · Owner: Nippon Conlux Co. Ltd. · Inventors: Yoshihara, Kenzo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for validating a paper-like piece are of a type having a detector which irradiates light onto a deposited paper-like piece and thereby produces a detection signal corresponding to a pattern on the paper-like piece and validating the paper-like piece by collating the detection signal produced by the detector in response to deposition of the paper-like piece with a predetermined standard pattern. Features of the apparatus and method are that a reference paperlike piece having no particular pattern is deposited and reference level data is obtained on the basis of a detection signal produced by the detector in response to this deposition, that data to be examined is …
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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 June 18, 1990 and granted February 13, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 18, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 2012.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.