Pattern-based interchange format
CA 2397576 C · Owner: Shrader, Eric M. · Inventors: Shrader, Eric M.; Harkless, Curt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An approach for the compression of images such as fingerprints may involve a resolution reduction of an image before forming a cellular representation of the , resulting resolution-reduced image. A given fingerprint image is divided into a , number of finger pattern cells. Each finger pattern cell is then compared to each , finger pattern cell in a set of predetermined finger pattern cells to find a close , match. The set of closely matching predetermined finger pattern cells forms the , cellular representation. The cellular representation may then be used as a basis for , a finger pattern interchange data format for use with pattern-based fingerprint , matching algorithms. 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 August 12, 2002 and granted February 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 2024.
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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.