High power light emitting diode
CA 2451808 A1 · Owner: Weldon Technologies, Inc. · Inventors: Barnett, Thomas J.; Tillinghast, Sean P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and system are taught for a system comprising an LED package. The LED package may comprise a leadframe having an annular contact and a base contact. An LED die, may be coupled to the annular and base contacts such that the P-type material portion is, electrically connected to an annular contact and the N-type material portion is electrically, connected to a base contact. Alternatively the N-type material portion may be electrically, connected to the annular contact and the P-type material portion may be electrically connected to, the base contact. A lens may be coupled to the leadframe and an optical , material may be located in a cavity defined by the lens, the base contact …
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 December 2, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 2, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 2, 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.