Optical wave guide and fiber optic insulator
CA 2384875 A1 · Owner: Scc Special Communication Cables Gmbh & Co. Kg · Inventors: Deutsch, Bernhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an optical wave guide and to a fiber optic insulator. The optical wave guide rotating the polarization plane of a radiation coupled into said plane consists of a Faraday effect fiber core (11) a fiber sheath , (3) and a coating (5) that generates a permanent magnetic field and concentrically covers the YIG-doted fiber core (11). The outer coating (5) is produced from a material that has magnetic properties or that can be magnetized. The magnetic coating consists of two half-shells (7 9).
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 2, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 2, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2022.
- 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.