Hole transport polymers and devices made with such polymers
CA 2479550 A1 · Owner: Jaycox, Gary Delmar · Inventors: Yu, Gang; Jaycox, Gary Delmar; Periyasamy, Mookkan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is generally directed to a hole transport polymer comprising a polymeric backbone having linked thereto a plurality of substituents comprising fused aromatic ring groups with the proviso that the , polymer does not contain groups selected from triarylamines and carbazole groups. It further relates to devices that are made with the polymer.
Read the whole patent
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 April 1, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 1, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 1, 2025.
- 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.