Multimedia private branch exchanger and private branch exchange system
CA 2367059 A1 · Owner: Funato, Yasuo · Inventors: Asada, Hiroshi; Funato, Yasuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A router attachable to and detachable from a private branch exchanger, comprising communication network interface means connectable to a communication network bus interface means connectable to a bus of the private branch exchanger, memory means including a routing table and routing means for routing a packet signal transmitted via the communication network interface means with reference to the routing table, in accordance with an address signal, and for transmitting the packet signal to the bus interface means.
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 30, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 30, 2020.
- 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.