Modem with remote monitoring capability
CA 2187141 C · Owner: Dataradio Inc. · Inventors: Pearl, Norman D.; Prest, Edward C.; Vallee, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A modem unit, typically a wireless modem unit has a bidirectional digital data port, a modem a transceiver, and a microcontroller programmed to control the unit according to a control program. The modem unit has a command mode and the microcontroller is programmed to recognize certain commands by means of a prefix as remote commands and retransmit them to a remote modem unit rather than acting on them locally. The microcontroller is also programmed to monitor operating parameters of the modem unit and optionally to insert data relating to these parameters into a prefix to data strings transmitted by the modem unit and strip such prefixes from data strings received by the modem unit. 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 October 4, 1996 and granted May 8, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 2018.
- 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.