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Class Information
Number: 257/E21.356
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Processes or apparatus adapted for manufacture or treatment of semiconductor or solid-state devices or of parts thereof (epo) > Manufacture or treatment of semiconductor device (epo) > Device having at least one potential-jump barrier or surface barrier, e.g., pn junction, depletion layer, carrier concentration layer (epo) > Device having semiconductor body comprising group iv elements or group iii-v compounds with or without impurities, e.g., doping materials (epo) > Multi-step process for manufacture of device of bipolar type, e.g., diodes, transistors, thyristors, resistors, capacitors) (epo) > Device comprising one or two electrodes, e.g., diode, resistor or capacitor with pn or schottky junctions (epo) > Diode (epo) > Break-down diode, e.g., zener diode, avalanche diode (epo) > Zener diode (epo)
Description: This subclass is indented under subclass E21.355. This subclass is substantially the same in scope as ECLA classification H01L21/329B4B.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8664728 Power transistor with protected channel Mar. 4, 2014
8492866 Isolated Zener diode Jul. 23, 2013
8435853 Method for forming a semiconductor device, and a semiconductor with an integrated poly-diode May. 7, 2013
8431959 Method of forming an ESD protection device and structure therefor Apr. 30, 2013
8415765 Semiconductor device including a guard ring or an inverted region Apr. 9, 2013
8389354 Trenched MOSFETS with improved gate-drain (GD) clamp diodes Mar. 5, 2013
8377757 Device and method for transient voltage suppressor Feb. 19, 2013
8252656 Zener triggered ESD protection Aug. 28, 2012
8236625 Method of forming a multi-channel ESD device Aug. 7, 2012
8222115 Method of forming a high capacitance diode Jul. 17, 2012
8217419 Semiconductor device Jul. 10, 2012
8143701 Method of forming a high capacitance diode and structure therefor Mar. 27, 2012
8089095 Two terminal multi-channel ESD device and method therefor Jan. 3, 2012
8053808 Layouts for multiple-stage ESD protection circuits for integrating with semiconductor power device Nov. 8, 2011
8012842 Method for fabricating isolated integrated semiconductor structures Sep. 6, 2011
8003478 Method of forming a bi-directional diode and structure therefor Aug. 23, 2011
7910411 Semiconductor device and method for manufacturing the same Mar. 22, 2011
7812367 Two terminal low capacitance multi-channel ESD device Oct. 12, 2010
7666751 Method of forming a high capacitance diode and structure therefor Feb. 23, 2010
7612431 Trench polysilicon diode Nov. 3, 2009
7564101 Semiconductor device for protecting a circuit formed on a semiconductor chip from destruction caused by an electrostatic discharge Jul. 21, 2009
7554157 Lateral SOI component having a reduced on resistance Jun. 30, 2009
7544545 Trench polysilicon diode Jun. 9, 2009
7419883 Method for fabricating a semiconductor structure having selective dopant regions Sep. 2, 2008
7358194 Sequential deposition process for forming Si-containing films Apr. 15, 2008
7279773 Protection device for handling energy transients Oct. 9, 2007
6969891 Device providing protection against electrostatic discharges for microelectronic components on a SOI-type substrate Nov. 29, 2005
6900093 Method of fabricating a zener diode chip for use as a shunt in Christmas tree lighting May. 31, 2005
6791161 Precision Zener diodes Sep. 14, 2004
6784080 Method of manufacturing semiconductor device by sputter doping Aug. 31, 2004
6784520 Semiconductor devices constitute constant voltage devices used to raise internal voltage Aug. 31, 2004
6706606 Buried zener diode structure and method of manufacture Mar. 16, 2004
6686641 Semiconductor device and method for driving the same Feb. 3, 2004
6605859 Buried Zener diode structure and method of manufacture Aug. 12, 2003
6586317 Method of forming a zener diode in a npn and pnp bipolar process flow that requires no additional steps to set the breakdown voltage Jul. 1, 2003
6495863 Semiconductor device having diode for input protection circuit of MOS structure device Dec. 17, 2002
6388308 Semiconductor device and method for driving the same May. 14, 2002
6368932 Method for producing diodes Apr. 9, 2002
6217951 Impurity introduction method and apparatus thereof and method of manufacturing semiconductor device Apr. 17, 2001
5946586 Method of manufacturing a glass-covered semiconductor device Aug. 31, 1999
5756387 Method for forming zener diode with high time stability and low noise May. 26, 1998
5686319 Method for producing a diode Nov. 11, 1997
5605851 Method of forming semiconductor device with a buried junction Feb. 25, 1997
5600590 Process for the manufacture of an integrated voltage limiter and stabilizer in flash EEPROM memory devices Feb. 4, 1997
5541140 Semiconductor arrangement and method for its manufacture Jul. 30, 1996
5486486 Process for the manufacture of an integrated voltage limiter and stabilizer in flash EEPROM memory devices Jan. 23, 1996
5430311 Constant-voltage diode for over-voltage protection Jul. 4, 1995
5418184 Method of manufacturing a semiconductor device in which dopant atoms are provided in a semiconductor body May. 23, 1995
5322803 Process for the manufacture of a component to limit the programming voltage and to stabilize the voltage incorporated in an electric device with EEPROM memory cells Jun. 21, 1994
5286660 Method for doping a semiconductor wafer having a diffusivity enhancement region Feb. 15, 1994

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