Method for producing a three-dimensional photonic crystal using a double inversion technique
CA 2573935 C · Owner: Tetreault, Nicolas · Inventors: Ozin, Geoffrey A.; Wegener, Martin; Von Freymann, Georg Ludwig Eberhard
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 for producing a three-dimensional photonic crystal comprised of a material with a high refractive index. To this end a , photonic crystal is firstly provided which is comprised of a polymer and , empty interstitial lattice sites are provided through the surface thereof. A network made of filling material is formed by introducing this filling material into the interstitial lattice sites. After removing the polymer cavities result in the network formed from this filling material. The material with a high refractive index is introduced into these cavities whereby forming a structure therein that is made of the material with the high refractive index. …
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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 August 5, 2005 and granted May 21, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 5, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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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.