Process for the fabrication of active and passive polymer-based components for integrated optics
CA 2296569 A1 · Owner: Deutsche Telekom Ag · Inventors: Koops, Hans Wilfried Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method aimed at producing in an economical manner high-quality active and passive optoelectronic components presenting a high degree of integration and great packing density. According to the invention a high-quality structurable layer of coating polymer is applied to an optoelectronic component. A structure is produced by means of an etching mask in conjunction with highly anisotropic deep etching and the resulting structure filled with monomers by means of gaseous or liquid phase diffusion. Depending on the type of monomer used for diffusion and both temperature and reaction time the optical characteristics of the optical component can be modified in 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 July 5, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 5, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 5, 2019.
- 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.