Electronic mail system with advertising
CA 2251676 C · Owner: D. E. Shaw & Co. L.P. · Inventors: Shaw, David E.; Ardai, Charles E.; Marsh, Brian D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system (100) for providing scheduled messages to a remote user (101) in a batch oriented system. In a preferred embodiment of the present invention a , user (101) creates and/or reads electronic mail locally. While the user (101) creates the electronic mail, a message is displayed to the user (101) on a portion of the local monitor, the message preferably changing in accordance with a local display schedule and stored on a local storage device. The message is preferably targeted to the particular user (101). When the user (101) is ready to transmit the e-mail created and/or receive e-mail addressed to him, the user's local client establishes a connection via a modem (102) with a …
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 April 11, 1997 and granted October 22, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 11, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 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.