Inter-network transport element of sonet overhead
CA 2090664 C · Owner: Noser, Francis G. · Inventors: Noser, Francis G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a SONET cross connect, the same physical link is used between the interfaces and the matrix to carry the overhead and the payload. The cross connection function within the matrix may be used to group concentrate and, route the overhead signals between a server and the matrix. The matrix may also be used to transport signals between servers. Overhead may be grouped and transported as payload.
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 March 1, 1993 and granted February 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 1, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 2015.
- 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.