Use of a compound based on a rare-earth phosphate as a luminophor in plasma systems
June 25, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesLight emitting device having luminescent screen with self activated blue light emitting phosphor Light emitting devices based on the excitation of phosphor screens Green fluorescence-emitting material and a fluorescent lamp provided therewith Method of making lanthanum cerium terbium phosphate phosphor Phosphor Production of crystallites of cerium/lanthanum/terbium phosphates from insoluble rare earth salts Cerium/lanthanum/terbium mixed phosphates Granular rare earth phosphates having characteristic morphology Particles of rare earth phosphate and method for the preparation thereof Patent #: 5567403 InventorAssigneeApplicationNo. 672523 filed on 06/25/1996US Classes:252/301.4PPhosphorus containingExaminersPrimary: Bonner, MelissaAttorney, Agent or FirmForeign Patent References
International ClassC09K 011/46Foreign Application Priority Data1995-06-28 FRAbstractThe invention relates to the use as a luminophor in plasma systems of a compound based on an yttrium, lanthanum, gadolinium or lutecium phosphate doped with at least one rare earth chosen from the group comprising terbium, praseodymium, europium and cerium.Other References
Field of SearchPhosphorus containing | |
