Patent · US Active

Method of making a lead-activated strontium hexaborate phosphor

US8070985B2 · kind B2 · utility

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7Claims

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Assignee

OSRAM SYLVANIA Inc. · US

Inventors

Gregory A. Marking · Sayre, US
Eric R. Mercer · Sayre, US
Chad E. DeForest · Milan, US

Key dates

Filing date	Jun 2, 2009
Grant date	Dec 6, 2011
Priority date	—
Expiry date	Jul 30, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K11/667
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

There is provided a method of making a SrB6O10:Pb phosphor that increases the manufactured quantity of the SrB6O10:Pb phosphor by approximately seven fold when using the same size reaction vessel, decreases the lead-containing waste stream, and eliminates the use of hazardous concentrated ammonium hydroxide. The UV emission brightness is equivalent to or better than the same phosphor when prepared using prior methods.

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