Communications system
CA 2020236 C · Owner: Maxemchuk, Nicholas Frank · Inventors: Maxemchuk, Nicholas Frank; Hahne, Ellen L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A potential transmission-access failing in the IEEE 802.6 protocol is remedied by the use of terminals that sense the activity level on the interconnecting communications lines. In response to conditions that may give rise to such a failing each terminal throttles its own transmission rate to improve the transmission capacity allocation of the protocol. In one embodiment the terminal that transmits, over more than half of the slots in the round trip delay simply throttles itself to one half the slots when it detects that another terminal is transmitting or is wishing to transmit. In another embodiment, even a terminal that is transmitting over fewerthan half the slots in the round trip …
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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 June 28, 1990 and granted December 17, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2012.
- 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.