Expired Canadian patentCanada
High power alingan based multi-chip light emitting diode
CA 2521881 C · Owner: Bridgelux, Inc. · Inventors: Liu, Heng
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A light emitting diode chip having a substantially transparent substrate and having an aspect ratio, which defines an elongated geometry provides enhanced efficiency and brightness. Method for forming and operating the same 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 11, 2004 and granted July 8, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 11, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 11, 2004
GrantedJuly 8, 2014
Term endedMay 11, 2024
Patent numberCA 2521881 C
Classification (IPC)H01L33/60 +2 more
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.