Tungstate, molybdate, vanadate base glasses
CA 2396961 A1 · Owner: Aitken, Bruce G. · Inventors: Aitken, Bruce G.; Dejneka, Matthew J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Alkali tungstate, molybdate and vanadate glasses and telecommunications , components embodying such glasses the compositions of the glasses consisting essentially of 15-70 mol percent of at least one oxide selected from the group consisting of WO3, MoO3 and VO2.5, 0-35 % CrO3 0-15 % UO3, the total WO3 plus , MoO3 plus VO2.5 plus CrO3 plus UO3 being 50-70 % 20-50 % R2O where R , represents at least two elements selected from the group consisting of Li Na, K, Rb, Cs, Ag and Tl, and optionally containing 0-10 % MO where M is selected from the groups of elements consisting of Ca Ba, Sr, Mg, Cd, Pb, 0-5 % X2O3 , where x is at least one element selected from the group consisting of Al Ga, In …
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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 November 16, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 16, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 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.