Precursor compounds of alkaline earth metal or rare earth metal aluminates method production and use thereof particularly as precursors for luminophores
US7625546B2 · kind B2 · utility
2Cited by
6References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 2004 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Feb 10, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2211/42
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to alkaline-earth or rare-earth metal aluminate precursor compounds, to their method of preparation and to their use in particular as phosphor precursors. These alkaline-earth or rare-earth metal aluminate precursor compounds are essentially crystallized in the form of a transition alumina and in the form of substantially spherical and chemically homogeneous particles including pores whose mean diameter is of at least 10 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.