Data network security system and method
CA 2193748 C · Owner: At&T Corp. · Inventors: Silverman, David Phillip
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A secure communication mechanism for communicating credit card or other sensitive information between a user terminal and a server which communicate over a data network (e.g. Internet). For secure or private communication of sensitive information over a data network a telephone, connection is established between the originating server to which the user is connected for access to the data network and the SP to which the sensitive information is directed. The method and system provide for a secure electronic commercial transaction between a user and a service provider which charges for information and/or services and/or goods wherein sensitive information , includes credit card information …
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 December 23, 1996 and granted January 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 23, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2018.
- 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.