Fraud protection for card transactions
CA 2114562 C · Owner: Penzias, Arno Allan · Inventors: Penzias, Arno Allan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The problems of fraud in card transactions can be reduced by after requiring the person engaged in the card transaction to initially identify himself such as by supplying a card number, a) requesting the person to supply as authentication information either 1) a randomly selected piece of prestored information or 2) information derived from a randomly selected piece of prestored information; and b) completing the transaction only if the authentication information requested is correctly supplied. The authentication information requested is described in terms of its nature i.e. what it represents, so that one can not deduce from the request the correct response without knowing the selected …
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 January 31, 1994 and granted April 29, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 31, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 2016.
- 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.