Method and apparatus for fabricating waveguides and waveguides fabricated therefrom
CA 2494307 C · Owner: Balch, Ernest Wayne · Inventors: Douglas, Leonard Richard; Shih, Min-Yi; Balch, Ernest Wayne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for adaptively fabricating a waveguide (30) comprises: measuring misplacement of a photonic device (31, 32 34) relative to a substrate (20); , generating computer readable instructions for using a plurality of graphics primitives (16) to form the waveguide; and photocomposing the waveguide on the substrate in accordance with the computer readable instructions. A reticle (14) comprises a plurality of graphics primitives with at least one of the plurality of graphics primitives comprising a tapered end. A waveguide (30) comprises a plurality of waveguide segments (22) with each of the plurality of waveguide segments comprising a tapered end and being adjacent to at least one …
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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 24, 2003 and granted February 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 2025.
- 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.