Method for fabricating an optical waveguide
CA 2338438 A1 · Owner: Quantock, Paul R. · Inventors: Lawrence, Brian L.; Schulze, John L.; Quantock, Paul R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The method for fabricating an optical waveguide may include a plurality of mechanical steps, e.g. lapping, polishing and/or dicing, and bonding steps, e.g. attaching with adhesives. In one embodiment the method includes the , steps of providing an optical material (20) thinning and polishing the , optical material to form an optical waveguide core (12) comprising a plurality of longitudinally extending surfaces, providing a plurality of support substrates (30, 50, 90, 110), and attaching the plurality of support substrates to the longitudinally extending surfaces of the core (12). The plurality of support substrates may be attached to the plurality of longitudinally extending surfaces …
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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 July 22, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2021.
- 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
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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.