Address caching network interface circuit for transparent bridge
CA 2066006 A1 · Owner: Glavin, Lisanne M. · Inventors: Chefurka, Paul V.; Cottreau, Peter M.K.; Delaney, David Macdonald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A data transfer system between local area networks to which stations are connected comprising a transparent bridge, network interface circuits (NICs) connected between the networks and the bridge at least, one NIC comprising cache memory apparatus for maintaining temporary record of the source address of station(s) transmitting data on an associated LAN apparatus for, determining the destination address of frames received on the LAN from a given station or another bridge attached to the LAN, apparatus for transferring (or allowing the transfer of) the frames to the bridge for further transmission to another NIC in the event the destination address is not one of the addresses in the cache …
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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 April 14, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 14, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 2014.
- 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.