Ip-pstn call processing server
CA 2216035 A1 · Owner: Udall, Jim · Inventors: Payant, Louis; Udall, Jim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A call processing server operating in a computer environment to provide call processing features over computer-based networks such as the Internet or private Intranets and across the public switched telephone network. In addition to transporting voice fax etc. over the, Internet, the server provides call processing features such as hold, conferencing, etc.
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 17, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 17, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 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.