Method of securely storing and retrieving monetary data
CA 2279248 A1 · Owner: Bosselaers, Antoon Wilfried Jan · Inventors: De Rooij, Peter Jacobus Nicolaas; Bosselaers, Antoon Wilfried Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of securely storing and retrieving monetary values such as , electronic cheques and electronic coins is disclosed. In an interactive , protocol between an issuer (e.g. a bank terminal) and a recipient (e.g. a smart card) of electronic money, authentication values (A B, ...) are , produced and are stored in an external storage (e.g. an electronic wallet). At a later stage, the protocol is repeated between the recipient and the storage to securely retrieve the stored authentication values.
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 February 13, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2019.
- 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.