Silica nanoparticle binder for phosphor coatings
CA 2296649 A1 · Owner: Shaw, Cathy M. · Inventors: Shaw, Cathy M.; Evans, Jean M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An inorganic binder for the phosphor coatings of fluorescent lamps is described. The binder comprises silica nanoparticles which are dispersed with the phosphor in the coating. The use of lesser amounts of silica nanoparticles in place of standard aluminum oxide binders yields increased efficiency from fluorescent lamps which use vacuum ultraviolet light as a primary source of phosphor excitation. The increased efficiency is achieved without sacrificing coating adherence.
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 January 20, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 2022.
- 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.