The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2009
Filed:
May. 19, 2004
Applicants:
Benjamin Delespierre, Margny-les-Compiègne, FR;
Cédric Froidefond, Paris, FR;
Thierry Le Mercier, Paris, FR;
Inventors:
Benjamin Delespierre, Margny-les-Compiègne, FR;
Cédric Froidefond, Paris, FR;
Thierry Le Mercier, Paris, FR;
Assignee:
Rhodia Electronics & Catalysis, La Rochelle, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/44 (2006.01);
U.S. Cl.
CPC ...
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.