Integrated optical device with coupling waveguide layer
CA 2378341 A1 · Owner: Penty, Richard Vincent · Inventors: White, Ian Hugh; Yu, Siyuan; Penty, Richard Vincent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An integrated optical device comprises first and second optical devices (5 9) , and an optical waveguide layer (3). Each optical device (5 9) is arranged to , be optically coupled with the waveguide layer (3). The optical devices to be coupled may be a distributed feedback semiconductor laser and an electroabsorption modulator, e.g.
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 July 14, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 14, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 14, 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.