Ethernet transport facility over digital subscriber lines
CA 2294970 C · Owner: 3Com Corporation · Inventors: Peleg, Shimon; Sfadya, Yackov; Porat, Boaz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A facility transport system for transporting Ethernet over digital subscriber lines. The system, termed 10BaseS, is capable of transmitting of 10 Mbps Ethernet over existing copper infrastructure. The system utilizes carrierless amplitude modulation phase modulation/quadrature amplitude modulation (CAP/QAM) to transport Ethernet frame data and utilizes splitter means (22) to separate both the downstream and upstream channels from POST signals.
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 May 26, 1998 and granted July 15, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 26, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 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.