Compositions – Inorganic luminescent compositions – Zinc or cadmium containing
Reexamination Certificate
2006-03-21
2006-03-21
Koslow, C. Melissa (Department: 1755)
Compositions
Inorganic luminescent compositions
Zinc or cadmium containing
Reexamination Certificate
active
07014793
ABSTRACT:
A method of making zinc sulfide based electroluminescent phosphors is described wherein a first-fired zinc sulfide material having a hexagonal β-ZnS crystal structure is at least partially converted to a distorted hexagonal β-ZnS crystal structure by ultrasonic irradiation. The first-fired material is then fired at a lower temperature to form an electroluminescent phosphor.
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Belinski-Wolfe Judy A.
Chenot Charles F.
Huang Fuquiang
Clark Robert F.
Koslow C. Melissa
OSRAM SYLVANIA Inc.
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