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Class Information
Number: 257/139
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Regenerative type switching device (e.g., scr, comfet, thyristor) > Combined with field effect transistor > With extended latchup current level (e.g., comfet device)
Description: Subject matter wherein the regenerative active junction type switching device (e.g., a conductivity modulated FET) includes means to provide regenerative action without latchup over an extended current range of the device (i.e., by increasing IH










Sub-classes under this class:

Class Number Class Name Patents
257/144 Cathode emitter or cathode electrode feature 93
257/140 Combined with other solid-state active device in integrated structure 156
257/143 Having anode shunt means 55
257/142 Having impurity doping for gain reduction 69
257/141 Lateral structure, i.e., current flow parallel to main device surface 143
257/145 Low impedance channel contact extends below surface 22


Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
8704296 Trench junction field-effect transistor Apr. 22, 2014
8685800 Single event latch-up prevention techniques for a semiconductor device Apr. 1, 2014
8674402 Power semiconductor device and methods for fabricating the same Mar. 18, 2014
8664728 Power transistor with protected channel Mar. 4, 2014
8664692 Semiconductor device Mar. 4, 2014
8659065 Semiconductor device and method of manufacturing the same Feb. 25, 2014
8653556 Vertical semiconductor device Feb. 18, 2014
8633510 IE-type trench gate IGBT Jan. 21, 2014
8614483 Insulated gate semiconductor device Dec. 24, 2013
8609443 Semiconductor device manufacturing method Dec. 17, 2013
8610204 Semiconductor device Dec. 17, 2013
8604514 Semiconductor device Dec. 10, 2013
8604513 Semiconductor device having SOI substrate Dec. 10, 2013
8604584 Semiconductor device and method of manufacturing semiconductor device Dec. 10, 2013
8598623 Nanotube semiconductor devices and nanotube termination structures Dec. 3, 2013
8598622 Semiconductor device Dec. 3, 2013
8587025 Method for forming laterally varying doping concentrations and a semiconductor device Nov. 19, 2013
8587071 Electrostatic discharge (ESD) guard ring protective structure Nov. 19, 2013
8581339 Structure of NPN-BJT for improving punch through between collector and emitter Nov. 12, 2013
8569780 Semiconductor power device with embedded diodes and resistors using reduced mask processes Oct. 29, 2013
RE44547 Semiconductor device having deep trench charge compensation regions and method Oct. 22, 2013
8558275 Sawtooth electric field drift region structure for power semiconductor devices Oct. 15, 2013
8546847 Semiconductor device and power conversion apparatus using the same Oct. 1, 2013
8541787 High breakdown voltage wide band-gap MOS-gated bipolar junction transistors with avalanche capability Sep. 24, 2013
8530930 Semiconductor device having plural insulated gate switching cells and method for designing the same Sep. 10, 2013
8492792 Semiconductor device and manufacturing method thereof Jul. 23, 2013
8482030 Insulated gate bipolar transistor and manufacturing method thereof Jul. 9, 2013
8482029 Semiconductor device and integrated circuit including the semiconductor device Jul. 9, 2013
8476732 Semiconductor device Jul. 2, 2013
8471291 Semiconductor device Jun. 25, 2013
8466490 Enhanced segmented channel MOS transistor with multi layer regions Jun. 18, 2013
8466491 Semiconductor component with improved softness Jun. 18, 2013
8466515 Semiconductor device Jun. 18, 2013
8461620 Laser pumping of thyristors for fast high current rise-times Jun. 11, 2013
8455958 Insulated gate semiconductor device with well region edge positioned within ring-shaped buffer trench Jun. 4, 2013
8440553 Method of producing a vertically inhomogeneous platinum or gold distribution in a semiconductor substrate and in a semiconductor device May. 14, 2013
8441070 Semiconductor device and method of manufacturing semiconductor device May. 14, 2013
8426888 Vertical semiconductor device with thinned substrate Apr. 23, 2013
8421145 Power semiconductor device Apr. 16, 2013
8415711 Semiconductor device and method for manufacturing the same Apr. 9, 2013
8405122 Insulated gate semiconductor device Mar. 26, 2013
8390059 Power semiconductor device Mar. 5, 2013
8384123 Semiconductor device and method for manufacturing same Feb. 26, 2013
8362519 Semiconductor device Jan. 29, 2013
8350289 Semiconductor device Jan. 8, 2013
8344415 Semiconductor component Jan. 1, 2013
8330185 Semiconductor device having semiconductor substrate including diode region and IGBT region Dec. 11, 2012
8324657 Semiconductor device Dec. 4, 2012
8304814 Power semiconductor device Nov. 6, 2012
8299494 Nanotube semiconductor devices Oct. 30, 2012

1 2 3 4 5 6 7 8










 
 
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