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Class Information
Number: 257/E21.447
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 the manufacture of unipolar device (epo) > Field-effect transistor (epo) > With pn junction or heterojunction gate (epo) > With pn homojunction gate (epo) > Vertical transistor, e.g., tecnetrons (epo)
Description: This subclass is indented under subclass E21.446. This subclass is substantially the same in scope as ECLA classification H01L21/337B2.










Patents under this class:

Patent Number Title Of Patent Date Issued
8659057 Self-aligned semiconductor devices with reduced gate-source leakage under reverse bias and methods of making Feb. 25, 2014
8524552 Normally-off power JFET and manufacturing method thereof Sep. 3, 2013
8466017 Methods of making semiconductor devices having implanted sidewalls and devices made thereby Jun. 18, 2013
8354678 Structure and method for forming a light detecting diode and a light emitting diode on a silicon-on-insulator wafer backside Jan. 15, 2013
8193521 Resistive memory cell fabrication methods and devices Jun. 5, 2012
8119471 Semiconductor device and method for manufacturing the same Feb. 21, 2012
8105868 Method for making solar sub-cells from a solar cell Jan. 31, 2012
7859026 Vertical semiconductor device Dec. 28, 2010
7799623 Method for manufacturing semiconductor device having LDMOS transistor Sep. 21, 2010
7772103 Method of forming a wire structure Aug. 10, 2010
7763506 Method for making an integrated circuit including vertical junction field effect transistors Jul. 27, 2010
7745273 Semiconductor device and method for forming same Jun. 29, 2010
7586130 Vertical field effect transistor using linear structure as a channel region and method for fabricating the same Sep. 8, 2009
7476590 Method of manufacturing semiconductor device Jan. 13, 2009
7364997 Methods of forming integrated circuitry and methods of forming local interconnects Apr. 29, 2008
7045397 JFET and MESFET structures for low voltage high current and high frequency applications May. 16, 2006
7033877 Vertical replacement-gate junction field-effect transistor Apr. 25, 2006
6995052 Method and structure for double dose gate in a JFET Feb. 7, 2006
6921932 JFET and MESFET structures for low voltage, high current and high frequency applications Jul. 26, 2005
6909125 Implant-controlled-channel vertical JFET Jun. 21, 2005
6900506 Method and structure for a high voltage junction field effect transistor May. 31, 2005
6878993 Self-aligned trench MOS junction field-effect transistor for high-frequency applications Apr. 12, 2005
6870189 Pinch-off type vertical junction field effect transistor and method of manufacturing the same Mar. 22, 2005
6861678 Double diffused vertical JFET Mar. 1, 2005
6855614 Sidewalls as semiconductor etch stop and diffusion barrier Feb. 15, 2005
6812079 Method for a junction field effect transistor with reduced gate capacitance Nov. 2, 2004
6777722 Method and structure for double dose gate in a JFET Aug. 17, 2004
6696706 Structure and method for a junction field effect transistor with reduced gate capacitance Feb. 24, 2004
6690040 Vertical replacement-gate junction field-effect transistor Feb. 10, 2004
6580150 Vertical junction field effect semiconductor diodes Jun. 17, 2003
5861643 Self-aligned JFET Jan. 19, 1999
5702987 Method of manufacture of self-aligned JFET Dec. 30, 1997
5599724 FET having part of active region formed in semiconductor layer in through hole formed in gate electrode and method for manufacturing the same Feb. 4, 1997
5340757 Method of manufacturing a vertical field effect transistor Aug. 23, 1994
5312782 SOI type vertical channel field effect transistor and process of manufacturing the same May. 17, 1994
4505022 Junction vertical field effect transistor and process for the production thereof Mar. 19, 1985
4351099 Method of making FET utilizing shadow masking and diffusion from a doped oxide Sep. 28, 1982
4288800 Junction field effect transistor Sep. 8, 1981
4181542 Method of manufacturing junction field effect transistors Jan. 1, 1980
4175317 Method for manufacturing junction type field-effect transistors Nov. 27, 1979
3938241 Vertical channel junction field-effect transistors and method of manufacture Feb. 17, 1976











 
 
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