Method and apparatus for article authentication
CA 2457023 A1 · Owner: Hohberger, Clive P. · Inventors: Hohberger, Clive P.; Tsirline, Boris Y.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An authentication method for authenticating an article (Fig. 2a 202, 204, 208, 210) in a device includes the steps of a) reading an identification number stored on the article, b) reading an authentication number stored on the article, c) determining an input number based at least in part on the identification number, d) applying an authentication function to the input number to calculate an output number, e) determining that the article is authentic only if the authentication number corresponds to the output number and f) permitting use of the article in the device if the article is authentic, and disabling use of the article in the device if the article is not authentic.
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 August 22, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 22, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 2024.
- 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
Timeline From CIPO dates
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.