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Class Information
Number:
257/E33.06
Name:
Active solid-state devices (e.g., transistors, solid-state diodes)
>
Light emitting semiconductor devices having a potential or a surface barrier, processes or apparatus peculiar to the manufacture or treatment of such devices, or of parts thereof
>
Detail of nonsemiconductor component other than light-emitting semiconductor device (epo)
> Coatings (epo)
Description:
This subclass is indented under subclass E33.055. This subclass is substantially the same in scope as ECLA classification H01L33/00B3.
Sub-classes under this class:
Class Number
Class Name
Patents
257/E33.061
Comprising luminescent material (e.g., fluorescent) (epo)
306
Patents under this class:
1
2
3
4
Patent Number
Title Of Patent
Date Issued
4095011
Electroluminescent semiconductor device with passivation layer
Jun. 13, 1978
4062035
Luminescent diode
Dec. 6, 1977
3997907
Light emitting gallium phosphide device
Dec. 14, 1976
3991339
Light emitting diode with reflector
Nov. 9, 1976
3964157
Method of mounting semiconductor chips
Jun. 22, 1976
3946417
Minimizing cross-talk in L.E.D. arrays
Mar. 23, 1976
1
2
3
4
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