Patent · US Active

Surface-modified phosphors

US9139763B2 · kind B2 · utility

11Cited by

0References

22Claims

0Family size

Assignee

Merck Patent GmbH · DE

Inventors

Holger Winkler · Darmstadt, DE
Reinhold Rueger · Wittenberg, DE
Ralf Petry · Griesheim, DE
Tim Vosgroene · Ober-Ramstadt, DE
Walter Tews · Greifswald, DE

Key dates

Filing date	Oct 23, 2008
Grant date	Sep 22, 2015
Priority date	—
Expiry date	Aug 26, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K11/77342
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention relates to surface-modified phosphor particles based on luminescent particles of (Ca,Sr,Ba)2SiO4 and/or other silicates, in each case individually or mixtures thereof with one or more activator ions, such as Eu, Mn, Ce and/or Mg and/or Zn, where at least one metal, transition-metal or semimetal oxide coating and an organic coating are applied to the luminescent particles, and to a preparation process.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.