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Class Information
Number: 257/213
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Field effect device
Description: Subject matter comprising a field effect transistor, in which the density of electrical charge (electrons or holes) in a semiconductor region is controlled by a voltage applied to an adjacent region or electrode which in operation is prevented from conducting direct electrical current to or from the semiconductor region by an insulator or barrier region.

Sub-classes under this class:

Class Number Class Name Patents
257/214 Charge injection device 114
257/215 Charge transfer device 237
257/288 Having insulated electrode (e.g., mosfet, mos diode) 1,826
257/256 Junction field effect transistor (unipolar transistor) 228
257/252 Responsive to non-optical, non-electrical signal 186
257/255 With current flow along specified crystal axis (e.g., axis of maximum carrier mobility) 141

Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
8709881 Direct chemical vapor deposition of graphene on dielectric surfaces Apr. 29, 2014
8704218 Semiconductor device having an oxide semiconductor film Apr. 22, 2014
8686405 Minute structure, micromachine, organic transistor, electric appliance, and manufacturing method thereof Apr. 1, 2014
8686425 Method for manufacturing semiconductor device Apr. 1, 2014
8680673 Integrated heat pillar for hot region cooling in an integrated circuit Mar. 25, 2014
8674481 Active device on a cleaved silicon substrate Mar. 18, 2014
8674453 Mechanisms for forming stressor regions in a semiconductor device Mar. 18, 2014
8674415 High frequency semiconductor switch Mar. 18, 2014
8674413 Methods of forming fins and isolation regions on a FinFET semiconductor device Mar. 18, 2014
8674412 Contacts-first self-aligned carbon nanotube transistor with gate-all-around Mar. 18, 2014
8664699 Methods and devices for fabricating and assembling printable semiconductor elements Mar. 4, 2014
8653564 Millimeter-wave transistor device Feb. 18, 2014
8653565 Mixed mode multiple switch integration of multiple compound semiconductor FET devices Feb. 18, 2014
8648354 Electronic field effect devices and methods for their manufacture Feb. 11, 2014
8642987 Semiconductor device and manufacturing method thereof Feb. 4, 2014
8643111 Electrostatic discharge (ESD) protection device Feb. 4, 2014
8638382 Solid-state imaging device and electronic apparatus Jan. 28, 2014
8624304 Printed material constrained by well structures and devices including same Jan. 7, 2014
8618554 Method to reduce ground-plane poisoning of extremely-thin SOI (ETSOI) layer with thin buried oxide Dec. 31, 2013
8618534 Field-effect transistor with a dielectric layer having therein denatured albumen Dec. 31, 2013
8617939 Enhanced thin film field effect transistor integration into back end of line Dec. 31, 2013
8618608 Lateral silicon controlled rectifier structure Dec. 31, 2013
8614471 Collections of laterally crystallized semiconductor islands for use in thin film transistors Dec. 24, 2013
8598635 Transistor Dec. 3, 2013
8592865 Overvoltage tolerant HFETs Nov. 26, 2013
8592873 Semiconductor memory devices and methods of forming the same Nov. 26, 2013
8580632 Semiconductor device and method of manufacturing same Nov. 12, 2013
8581306 Coupled electron shuttle providing electrical rectification Nov. 12, 2013
8575624 Semiconductor device Nov. 5, 2013
8574953 Low temperature melt-processing of organic-inorganic hybrid Nov. 5, 2013
8569803 BEOL compatible FET structrure Oct. 29, 2013
8564024 Trench-based power semiconductor devices with increased breakdown voltage characteristics Oct. 22, 2013
8564025 Nanowire FET having induced radial strain Oct. 22, 2013
8558306 Semiconductor device and method of manufacturing the same Oct. 15, 2013
8558285 Method using low temperature wafer bonding to fabricate transistors with heterojunctions of Si(Ge) to III-N materials Oct. 15, 2013
8557643 Transistor device with reduced gate resistance Oct. 15, 2013
8551847 Method for forming metal gate Oct. 8, 2013
8546852 Semiconductor device Oct. 1, 2013
8541824 Electronic devices and systems, and methods for making and using the same Sep. 24, 2013
8536625 Electronic shutter with photogenerated charge extinguishment capability for back-illuminated image sensors Sep. 17, 2013
8530932 Replacement spacer for tunnel FETS Sep. 10, 2013
8530285 Method for manufacturing semiconductor device Sep. 10, 2013
8525166 Zinc-tin oxide thin-film transistors Sep. 3, 2013
8525234 Formation of FinFET gate spacer Sep. 3, 2013
8525235 Multiplying pattern density by single sidewall imaging transfer Sep. 3, 2013
8518778 Method of forming semiconductor structure Aug. 27, 2013
8508001 Semiconductor device with work function adjusting layer having varied thickness in a gate width direction and methods of making same Aug. 13, 2013
8502277 Field-effect transistor, single-electron transistor and sensor using the same Aug. 6, 2013
8503059 Electrochromic thin film transistors with lateral or vertical structure using functionalized or non-functionalized substrates and method of manufacturing same Aug. 6, 2013
8497530 Semiconductor structures including dual fins Jul. 30, 2013

1 2 3 4 5 6 7 8 9 10 11 12

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