Protective spinel coating for aluminate phosphors
CA 2394989 C · Owner: Raukas, Madis · Inventors: Mishra, Kailash C.; Reilly, Thomas H. Iii; Raukas, Madis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A protective coating for aluminate phosphors is described. The protective coating comprises at least a partial spinet coating having the general formula Mg1-x Al2(1-y)O4-3y-x where 0<=x<1 and 0<=y<1. The coating is applied by an aqueous solution method which may be compatible with conventional fluorescent lamp manufacturing techniques.
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 July 25, 2002 and granted April 26, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 25, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 2024.
- 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.