Compact matrix code and one-touch device and method for code reading
CA 2419294 A1 · Owner: Haggis, John R. · Inventors: Rubin, Kim T.; Haggis, John R.; Blei, Keith
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A two-dimensional matrix code (101), method of producing the code and a method and device for reading the code are presented. The code is a round compact , and distinct code that stores an error-corrected 64-bit number embedded , targets, and quality control information within a space small enough for imaging using a compact, hand-held code finder (107). The code incorporates white space (305) both between the data areas (303) and targets (301) for easy identification of the code and to aid in image processing and within the data , area to correct for errors that sometimes occur when printing using lowquality techniques. Additionally, the code includes features to correct for 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 July 6, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 6, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2023.
- 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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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.