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Class Information
Number: 257/E29.211
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Semiconductors devices adapted for rectifying, amplifying, oscillating, or switching, capacitors, or resistors with at least one potential-jump barrier or surface barrier (epo) > Types of semiconductor device (epo) > Controllable by only signal applied to control electrode (e.g., base of bipolar transistor, gate of field-effect transistor) (epo) > Bipolar device (epo) > Thyristor-type device (e.g., having four-zone regenerative action) (epo)
Description: This subclass is indented under subclass E29.171. This subclass is substantially the same in scope as ECLA classification H01L29/74.


Sub-classes under this class:

Class Number Class Name Patents
257/E29.224 Asymmetrical thyristor (epo) 13
257/E29.215 Bidirectional device (e.g., triac) (epo) 105
257/E29.217 Combined structurally with at least one other device (epo) 34
257/E29.212 Gate-turn-off device (epo) 154
257/E29.223 Having amplifying gate structure (e.g., darlington configuration) (epo) 68
257/E29.222 Having built-in localized breakdown/breakover region (epo) 27
257/E29.225 Lateral thyristor (epo) 111
257/E29.216 With turn on by field effect (epo) 162


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
7436003 Vertical thyristor for ESD protection and a method of fabricating a vertical thyristor for ESD protection Oct. 14, 2008
7423298 Bidirectional photothyristor chip, optical lighting coupler, and solid state relay Sep. 9, 2008
7365372 Semiconductor device and method for manufacturing semiconductor device Apr. 29, 2008
7301178 Pressed-contact type semiconductor device Nov. 27, 2007
7183591 Trench isolation for thyristor-based device Feb. 27, 2007
7145186 Memory cell with trenched gated thyristor Dec. 5, 2006
7084438 Metal insulator power semiconductor component (MIS) and a method for producing the same Aug. 1, 2006
7053404 Active semiconductor component with an optimized surface area May. 30, 2006
7015077 Varied trench depth for thyristor isolation Mar. 21, 2006
6979602 Method for making a recessed thyristor control port Dec. 27, 2005
6967358 Thyristor-type memory device Nov. 22, 2005
6943382 Pressed-contact type semiconductor device Sep. 13, 2005
6924177 Method for producing a thyristor Aug. 2, 2005
6872602 Carrier coupler for thyristor-based semiconductor device Mar. 29, 2005
6870202 Surge protection semiconductor device Mar. 22, 2005
6864515 Pressure contact type semiconductor device having dummy segment Mar. 8, 2005
6841806 Heterojunction thyristor-based amplifier Jan. 11, 2005
6815734 Varied trench depth for thyristor isolation Nov. 9, 2004
6803259 Silicon controlled rectifier for sige process, manufacturing method thereof and integrated circuit including the same Oct. 12, 2004
6787816 Thyristor having one or more doped layers Sep. 7, 2004
6756612 Carrier coupler for thyristor-based semiconductor device Jun. 29, 2004
6690038 Thyristor-based device over substrate surface Feb. 10, 2004
6690039 Thyristor-based device that inhibits undesirable conductive channel formation Feb. 10, 2004
6683330 Recessed thyristor control port Jan. 27, 2004
6583452 Thyristor-based device having extended capacitive coupling Jun. 24, 2003
6509585 Electrostatic discharge protective device incorporating silicon controlled rectifier devices Jan. 21, 2003
6507050 Thyristors having a novel arrangement of concentric perimeter zones Jan. 14, 2003
6448589 Single side contacts for a semiconductor device Sep. 10, 2002
6423985 SCR compact structure Jul. 23, 2002
6410965 Annular SCR device Jun. 25, 2002
6246079 SCR circuit with a high trigger current Jun. 12, 2001
6239463 Low resistance power MOSFET or other device containing silicon-germanium layer May. 29, 2001
6163040 Thyristor manufacturing method and thyristor Dec. 19, 2000
6144045 High power devices based on gallium nitride and aluminum gallium nitride semiconductor heterostructures Nov. 7, 2000
6020603 Semiconductor device with a beveled and chamfered outer peripheral portion Feb. 1, 2000
5986290 Silicon controlled rectifier with reduced substrate current Nov. 16, 1999
5981982 Dual gated power electronic switching devices Nov. 9, 1999
5970324 Methods of making dual gated power electronic switching devices Oct. 19, 1999
5883403 Power semiconductor device Mar. 16, 1999
5852381 Turbine engine ignition exciter circuit including low voltage lockout control Dec. 22, 1998
5710442 Semiconductor device and method of manufacturing same Jan. 20, 1998
5656966 Turbine engine ignition exciter circuit including low voltage lockout control Aug. 12, 1997
5640024 Compression-type power semiconductor device Jun. 17, 1997
5600156 Diamond semiconductor device with P-I-N type multilayer structure Feb. 4, 1997
5592118 Ignition exciter circuit with thyristors having high di/dt and high voltage blockage Jan. 7, 1997
5554879 High voltage component having a low stray current Sep. 10, 1996
5550392 Semiconductor switching devices Aug. 27, 1996
5539217 Silicon carbide thyristor Jul. 23, 1996
5506153 Method for manufacture of a controllable power semiconductor element with buffer zone Apr. 9, 1996
5466951 Controllable power semiconductor element with buffer zone and method for the manufacture thereof Nov. 14, 1995

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