Portable electronic device to establish public loyalty to a media or similar
CA 2071901 C · Owner: Delahaye, Achille · Inventors: Delahaye, Achille; Audebert, Yves
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This device (1) validates participation of an individual in an operation where coded information on an information bearing medium must be read. It comprises: an input interface (R,8), processingmeans (4) comprising means of validation on the basis of said participation which, means being adapted to prevent said validation if a variable numeric value contained in said information coincides with variable numeric values previously held in memory; at least one memory (12) inacessible from said input interface (R,8) and managed by the processing means in order to store in memory, for a predetermined time period information, representative of said variable numeric values and input, interface (6) …
Read the whole patent
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 18, 1990 and granted August 10, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 18, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 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.
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.