Integrated optical component
CA 2081149 C · Owner: Diemeer, Martinus Bernardus Johannes · Inventors: Diemeer, Martinus Bernardus Johannes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an integrated optical component which comprises an adjustable Mach-Zehnder interferometer. The waveguide structure of the component is fabricated on the basis of potable unpoled material, the material in one (2) of the branches (2 3) of the MZ, interferometer being poled in a certain area (7). In the case of maximum poling in advance, the degree of poling of the poled material can subsequently be adjusted under conditions of accelerated thermal relaxation. Advantage: the component can first be fabricated, as far as its structure is concerned using fabrication techniques which are standard far the selected material without additional attention to correct sizing after …
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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 October 22, 1992 and granted September 12, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 2014.
- 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.