Semiconductor laser power monitoring arrangements and method
CA 2297898 A1 · Owner: Cielo Communications, Inc. · Inventors: Paananen, David W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Assemblies and an associated method for injecting light into a predetermined region are disclosed herein. These assemblies each include a light source arrangement for emitting light and an optical coupling arrangement which is in optical communication with the light source arrangement for directing a first portion of the light into the predetermined region. In a preferred embodiment the optical coupling arrangement also directs a second portion of the light away from the predetermined region. At least a part of the second portion of light is received by a detector arrangement which produces an output signal in response thereto which output signal is particularly useful for purposes …
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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 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 9, 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.