Method of and apparatus for communications conferencing
CA 2209707 A1 · Owner: Greene, Nancy M. · Inventors: Nisar, Mustafa; Whittaker, Richard; Collins, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is based on a client-server conferencing architecture wherein enhanced audio conferencing is provided by utilizing a unique voice mixing method. It supports conference participants on both packet switched networks (such as Internet/Intranets) and Switched Circuit Networks (SCN) (such as the telephone network). The enhanced voice mixing is performed within the conference server. The conference server can support multiple conference instances.
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 July 7, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 7, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 7, 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.