Method of controlling loop-back process in ethernet passive optical network
CA 2445221 C · Owner: Samsung Electronics Co. Ltd. · Inventors: Lim, Se-Youn; Song, Jae-Yeon; Kim, Jin-Hee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of controlling a loop-back process between a local device and a remote device in an Ethernet passive optical network is disclosed. The method includes the steps of: (a) adding a predetermined field into a loop-back control OAM PDU in the loop-back process the predetermined field having distinguishing messages for initiation of a loop-back process and messages for termination of a loop-back process; and (b) the local device and the remote device performing a loop-back process using the loop-back control OAM PDU.
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 16, 2003 and granted November 29, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 16, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 2025.
- 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.