Variable attenuation optical fiber coupling
CA 2126773 A1 · Owner: American Telephone And Telegraph Company · Inventors: Diner, Naim Fahri
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A variable attenuation optical fiber coupling arrangement for coupling two fibers mounted in connectors in end to end relationship. The end faces of each of the fibers is at an angle to its respective fiber axis. A coupling member adapted toreceive the connectors. Each connector has a locating key and the coupling member has keyways to receive each connector key. The key on at least one of the connectors and its corresponding keyway are rotatably positioned relative to the fiber end face so as to introduce a measured amount of mis-alignment of the end face relative to the other fiber end faces.
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 June 27, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 27, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2016.
- 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.