Coating processes – Electrical product produced – Hollow article
Patent
1975-09-29
1977-08-16
Smith, Ronald H.
Coating processes
Electrical product produced
Hollow article
427181, 427237, 427255, B05D 512
Patent
active
040427277
ABSTRACT:
A light diffusion coating for an electric lamp is described which comprises a thin layer of spherical alumina particles that have been vapor-deposited in a certain particle size range to provide more effective light scattering. The coatings are deposited upon the interior surface of the sealed glass envelope and have been found especially useful for incandescent lamps as well as for such other lamps as electric discharge lamps.
REFERENCES:
patent: 2545896 (1951-03-01), Pipkin
patent: 2626874 (1953-01-01), Pipkin
patent: 2989421 (1961-06-01), Novak
patent: 3868266 (1975-02-01), Henderson et al.
Henderson David C.
Maloney Kenneth M.
General Electric Company
Kempton Lawrence R.
McDevitt John F.
Neuhauser Frank L.
Silverberg S. S.
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