Modular optical device that interfaces with an external controller
CA 2528989 C · Owner: Levinson, Frank H. · Inventors: Levinson, Frank H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Optical modules described herein include optical components such as lasers (402) or photodiodes (408) for communicating on fiber-optic networks. The lasers (402) and photodiodes (408) have analog interface such that the lasers and photodiodes can be controlled by a controller external to the optical modules (320, 330). The optical modules also include memory modules (336). The memory modules store operating characteristics of the lasers and photodiodes. The operating characteristics can be read via digital interfaces that are connected to the memory modules. This allows the controller to appropriately adjust signals such that a randomly selected controller may be used with a …
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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 14, 2004 and granted January 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 14, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 14, 2026.
- 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.