Advanced call waiting and messaging system
CA 2215651 C · Owner: Alfred, Joseph Anderson · Inventors: Alfred, Joseph Anderson; Harrington, Christopher Gregory; Eisdorfer, Jerry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A communications system is designed to allow a call waiting subscriber who is already busy on a first call to receive information associated with a message being recorded by a second caller attempting to reach the subscriber. According to one aspect of the principles disclosed herein, a one-way conference call is established between the second caller and the subscriber as the message is being recorded to allow the subscriber to eavesdrop on the message. According to another aspect of the principles disclosed herein an, Automatic Speech Recognition system may transcribe the message being recorded into ASCII coded data that is delivered to the called party. The received message allows the …
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 September 15, 1997 and granted December 5, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 15, 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.