Electroluminescent assemblies containing boron chelates
CA 2276806 A1 · Owner: Wehrmann, Rolf · Inventors: Wehrmann, Rolf; Heuer, Helmut Werner; Elschner, Andreas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Electroluminescent assembly comprising a substrate an anode, an , electroluminescent, element and a cathode where at least one of the two electrodes is transparent in the, visible spectral region and the electroluminescent element contains one or more, zones selected from the group consisting of hole injection zone hole , transport zone, electroluminescent zone electron transport zone and electron injection zone in the, order specified, where each of the zones present may also assume functions of the, other zones mentioned, characterized in that the electroluminescent element contains, a boron complex of an 8-hydroxyquinoline derivative.
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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 June 30, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 30, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 30, 2021.
- 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.