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Class Information
Number: 257/E31.07
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) > Adapted to control current flow through device (e.g., photoresistor) (epo) > For device having potential or surface barrier (e.g., phototransistor) (epo) > Device sensitive to infrared, visible, or ultraviolet radiation (epo) > Characterized by at least three potential barriers (epo)
Description: This subclass is indented under subclass E31.054. This subclass is substantially the same in scope as ECLA classification H01L31/111.










Sub-classes under this class:

Class Number Class Name Patents
257/E31.071 Photothyristor (epo) 116


Patents under this class:

Patent Number Title Of Patent Date Issued
8227884 Photodetector array having array of discrete electron repulsive elements Jul. 24, 2012
7132677 Super bright light emitting diode of nanorod array structure having InGaN quantum well and method for manufacturing the same Nov. 7, 2006
5113076 Two terminal multi-band infrared radiation detector May. 12, 1992
5068524 Multiple heterostructure photodetector Nov. 26, 1991
5013904 Integrated photodetector with hysteresis May. 7, 1991
4907042 Device for the multiplication of charge carriers by an avalanche phenomenon and application of the said device to photosensors, photocathodes and infrared viewing devices Mar. 6, 1990
4888627 Monolithically integrated lateral insulated gate semiconductor device Dec. 19, 1989
4837607 Large-area, low capacitance semiconductor arrangement Jun. 6, 1989
4775881 Semiconductor device for detecting electromagnetic radiation or particles Oct. 4, 1988
4520381 Polychromatic image sensor May. 28, 1985
4513305 Multi-wavelength demultiplexer for fiber optical communication Apr. 23, 1985
4492434 Multi-color tunable semiconductor device Jan. 8, 1985
4450463 Multiple-quantum-layer photodetector May. 22, 1984
4450466 Semiconductor image sensor May. 22, 1984
4399448 High sensitivity photon feedback photodetectors Aug. 16, 1983
4254429 Hetero junction semiconductor device Mar. 3, 1981
4250516 Multistage avalanche photodetector Feb. 10, 1981
4240088 Semiconductor high-voltage switch Dec. 16, 1980
4203124 Low noise multistage avalanche photodetector May. 13, 1980
4107721 Phototransistor Aug. 15, 1978











 
 
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