Near infrared sensitive photopolymer and holographic photopolymer dispersed liquid crystal materials made therewith
CA 2298345 A1 · Owner: Universite Laval · Inventors: Boiko, Yuri; Galstian, Tigran
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is concerned with photopolymers sensitive to near infrared radiation for initiating polymerization and to applications of such, photopolymers like holographic polymer dispersed liquid crystal materials (H- PDLC) for, making optical devices. The invention also relates to holographic polymer dispersed, liquid crystal materials having improved switching speeds.
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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 February 14, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 14, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 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.