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US Patent 7452483 Yellow-emitting phosphor blend for electroluminescent lamps

Patent 7452483 was granted and assigned to Global Tungsten & Powders Corp. on November, 2008 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors

Is a

Patent

Patent attributes

Current Assignee

Global Tungsten & Powders Corp.

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

74524830

Patent Inventor Names

Thomas A. Wolfe0

Chung Nin Chau0

Judy A. Belinski-Wolfe0

Date of Patent

November 18, 2008

Patent Application Number

114620530

Date Filed

August 3, 2006

Patent Primary Examiner

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C Melissa Koslow

Patent abstract

A phosphor blend for an electroluminescent lamp is described that comprises a green-emitting electroluminescent phosphor and a red-emitting photoluminescent phosphor, the blend exhibiting an x color coordinate from 0.220 to 0.350 and a y color coordinate from 0.450 to 0.475 when stimulated by an electric field.