Method and apparatus for verifying a container code
CA 2109002 C · Owner: Kankanhalli, Atreyi Mohan · Inventors: Low, Kah Chan; Lui, Ho Chung; Lee, Chung Mong
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 verifying a code displayed on a container surface against a target code the method, comprising the steps of: capturing an image of the container surface carrying the displayed code; digitising the captured image to form a pixel array in which each pixel in the array has a respective quantisation level; scanning the pixel array to detect potential characters; selecting and grouping together potential characters of the displayed code; determining from the pixel values of the potential characters a set of recognised characters constituting a recognised code; comparing the target code with the recognised code; and either verifying or rejecting the recognised code in …
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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 22, 1993 and granted September 4, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 22, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 2015.
- 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.