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Class Information
Number: 257/E31.104
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Semiconductor devices responsive or sensitive to electromagnetic radiation (e.g., infrared radiation, adapted for conversion of radiation into electrical energy or for control of electrical energy by such radiation processes, or apparatus peculiar to manufacture or treatment of such devices, or of parts thereof) (epo) > Structurally associated with electric light source (e.g., electroluminescent light source) (epo) > Radiation-sensitive semiconductor device controlled by light source (epo) > Radiation-sensitive semiconductor device without potential or surface barrier (e.g., photoresistor) (epo)
Description: This subclass is indented under subclass E31.103. This subclass is substantially the same in scope as ECLA classification H01L31/16B.

Sub-classes under this class:

Class Number Class Name Patents
257/E31.105 Light source being semiconductor device having potential or surface barrier (e.g., light-emitting diode) (epo) 48
257/E31.106 Optical potentiometer (epo) 8

Patents under this class:

Patent Number Title Of Patent Date Issued
7981706 Photoresist composition and method of manufacturing a display substrate using the same Jul. 19, 2011
7816755 Photoelectric conversion device with isolation arrangement that reduces pixel space without reducing resolution or sensitivity Oct. 19, 2010
5514996 Photo-coupler apparatus May. 7, 1996
5291056 Electronic switch comprising a photosensitive semiconductor Mar. 1, 1994
5101099 Image reading device with different reflectivity coefficients in a transparent layer and a substrate Mar. 31, 1992
5059794 Radiation imaging sensor Oct. 22, 1991
4691111 Multiple gap optically activated switch Sep. 1, 1987
4633286 Multiple gap optically activated switch Dec. 30, 1986

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