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Class Information
Number: 257/E29.242
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) > Unipolar device (epo) > Field-effect transistor (epo)
Description: This subclass is indented under subclass E29.226. This subclass is substantially the same in scope as ECLA classification H01L29/772.










Sub-classes under this class:

Class Number Class Name Patents
257/E29.243 Using static field induced region (e.g., sit, pbt) (epo) 201
257/E29.244 Velocity modulations transistor (i.e., vmt) (epo) 11
257/E29.254 With delta-doped channel (epo) 38
257/E29.255 With field effect produced by insulated gate (epo) 1,096
257/E29.31 With field effect produced by pn or other rectifying junction gate (i.e., potential barrier) (epo) 48
257/E29.245 With one-dimensional charge carrier gas channel (e.g., quantum wire fet) (epo) 116
257/E29.246 With two-dimensional charge carrier gas channel (e.g., hemt; with two-dimensional charge-carrier layer formed at heterojunction interface) (epo) 334


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
7989853 Integration of high voltage JFET in linear bipolar CMOS process Aug. 2, 2011
7977187 Method of fabricating a buried-gate semiconductor device and corresponding integrated circuit Jul. 12, 2011
7977196 Semiconductor device with increased channel area and fabrication method thereof Jul. 12, 2011
7977713 Semiconductor devices with non-punch-through semiconductor channels having enhanced conduction and methods of making Jul. 12, 2011
7977749 Semiconductor device with increased channel area Jul. 12, 2011
7952137 Trench semiconductor device and method of making the same May. 31, 2011
7947971 Quantum well MOSFET channels having uni-axial strain caused by metal source/drains, and conformal regrowth source/drains May. 24, 2011
7875936 Power MOS electronic device and corresponding realizing method Jan. 25, 2011
7868353 Solid-state switch capable of bidirectional operation Jan. 11, 2011
7863621 Thin film transistor Jan. 4, 2011
7863687 Semiconductor apparatus Jan. 4, 2011
7859029 FET-based sensor for detecting ionic material, ionic material detecting device using the FET-based sensor, and method of detecting ionic material using the FET-based sensor Dec. 28, 2010
7855383 Semiconductor device and its manufacturing method Dec. 21, 2010
7851864 Test structure of a semiconductor device and semiconductor device Dec. 14, 2010
7838912 Semiconductor sensing field effect transistor, semiconductor sensing device, semiconductor sensor chip and semiconductor sensing device Nov. 23, 2010
7833874 Technique for forming an isolation trench as a stress source for strain engineering Nov. 16, 2010
7808042 Systems and devices including multi-gate transistors and methods of using, making, and operating the same Oct. 5, 2010
7804143 Radiation hardened device Sep. 28, 2010
7777272 Non-volatile memory device and semiconductor package including the same Aug. 17, 2010
7755112 Field effect transistor with air bridge Jul. 13, 2010
7750378 Field effect transistor and method of fabricating the same Jul. 6, 2010
7750396 Semiconductor device and method for fabricating the same Jul. 6, 2010
7750463 Bidirectional switch module Jul. 6, 2010
7732868 Semiconductor device Jun. 8, 2010
7728354 Semiconductor device Jun. 1, 2010
7723756 Silicon pillars for vertical transistors May. 25, 2010
7723789 Nonvolatile memory device with nanowire channel and method for fabricating the same May. 25, 2010
7709306 Active layer island May. 4, 2010
7701009 Source follower circuit or bootstrap circuit, driver circuit comprising such circuit, and display device comprising such driver circuit Apr. 20, 2010
7696539 Device fabrication by anisotropic wet etch Apr. 13, 2010
7659581 Transistor with dielectric stressor element fully underlying the active semiconductor region Feb. 9, 2010
7659571 Semiconductor device and method for manufacturing the same Feb. 9, 2010
7655987 Method for fabricating ultra-high tensile-stressed film and strained-silicon transistors thereof Feb. 2, 2010
7498616 Compound semiconductor switch circuit device Mar. 3, 2009
7479684 Field effect transistor including damascene gate with an internal spacer structure Jan. 20, 2009
7476916 Semiconductor device having a mis-type fet, and methods for manufacturing the same and forming a metal oxide film Jan. 13, 2009
7456476 Nonplanar semiconductor device with partially or fully wrapped around gate electrode and methods of fabrication Nov. 25, 2008
7422953 Semiconductor device and method of manufacturing the same Sep. 9, 2008
7397070 Self-aligned transistor Jul. 8, 2008
7372101 Sub-lithographics opening for back contact or back gate May. 13, 2008
7321142 Field effect transistor Jan. 22, 2008
7300850 Method of forming a self-aligned transistor Nov. 27, 2007
7268398 ESD protection cell with active pwell resistance control Sep. 11, 2007
7235827 Vertical power JFET with low on-resistance for high voltage applications Jun. 26, 2007
7183596 Composite gate structure in an integrated circuit Feb. 27, 2007
7166876 MOSFET with electrostatic discharge protection structure and method of fabrication Jan. 23, 2007
7166889 Semiconductor memory device having a gate electrode and a method of manufacturing thereof Jan. 23, 2007
6825527 Semiconductor memory device and manufacturing method Nov. 30, 2004
6753568 Memory device Jun. 22, 2004
6710368 Quantum tunneling transistor Mar. 23, 2004

1 2 3 4 5










 
 
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