High-reliability group iii-nitride light emitting diode
CA 2485640 A1 · Owner: Cree, Inc. · Inventors: Slater, David Beardsley, Jr.; Edmond, John Adam; Thibeault, Brian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A physically robust light emitting diode is disclosed that offers highreliability in sstandard packaging and that will withstand high temperature and high humidity conditions. The diode comprises a Group III nutride heterojunction diode with a p-type Group III nitride contact layer an ohmic , contact to the p-type contact layer and a sputter-deposited silicon nitride composition passivation layer on the ohmic contact. A method of manufacturing a light emitting diode and an LED lamp incorporating the diode are also disclosed.
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 May 14, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 14, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 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.