Electric lamp and discharge devices – With optical device or special ray transmissive envelope – Light diffusing
Patent
1981-12-07
1984-04-03
Demeo, Palmer C.
Electric lamp and discharge devices
With optical device or special ray transmissive envelope
Light diffusing
H01K 132
Patent
active
044410476
ABSTRACT:
A silica powder mixture is disclosed for electrostatic deposition to provide diffuse light from electric lamps. The present powder mixture exhibits improved moisture resistance along with shelf life and comprises in weight proportions approximately 35-65 parts calcined diatomaceous silica, approximately 35-65 parts fumed silica, and approximately 5-15 parts colloidal hydrophobic silica.
REFERENCES:
patent: 4081709 (1978-03-01), Collins et al.
patent: 4099080 (1978-07-01), Dawson et al.
Collins Clifford B.
James William G.
DeMeo Palmer C.
General Electric Company
Jacob Fred
McDevitt John F.
Schlamp Philip L.
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