Resources Contact Us Home
Browse by Category: Main > Physics
Class Information
Number: 257/E29.244
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) > Velocity modulations transistor (i.e., vmt) (epo)
Description: This subclass is indented under subclass E29.242. This subclass is substantially the same in scope as ECLA classification H01L29/772D.

Patents under this class:

Patent Number Title Of Patent Date Issued
8106434 Semiconductor device with a superparaelectric gate insulator Jan. 31, 2012
5959317 High frequency hetero junction type field effect transistor using multilayer electron feed layer Sep. 28, 1999
5404032 Field-effect semiconductor device Apr. 4, 1995
5374831 Quantum well phonon modulator Dec. 20, 1994
5258632 Velocity modulation transistor Nov. 2, 1993
5225895 Velocity-modulation transistor with quantum well wire layer Jul. 6, 1993
5196359 Method of forming heterostructure field effect transistor Mar. 23, 1993
5091759 Heterostructure field effect transistor Feb. 25, 1992
4806998 Heterojunction and dual channel semiconductor field effect transistor or negative transconductive device Feb. 21, 1989
4745452 Tunneling transfer devices May. 17, 1988
4688061 Mobility-modulation field-effect transistor Aug. 18, 1987

  Recently Added Patents
Method and system for coding an information signal using closed loop adaptive bit allocation
Methods and devices for creating, compressing and searching binary tree
Semiconductor devices and methods for changing operating characteristics and semiconductor systems including the same
High-order harmonic device of cavity filter
Display screen with graphical user interface
Method of optimizing air mover performance characteristics to minimize temperature variations in a computing system enclosure
Pressure-sensitive adhesive composition having an improved release behavior
  Randomly Featured Patents
System and method for interleaving memory banks
Digital control bus system
Endoscope treatment instrument stopper and treatment instrument stopper section
Lance for blowing fluid-state substances inside furnaces, particularly for steel production
Method and apparatus for producing tractive effort with interface to other apparatus
Method and apparatus for use in casting an article
Endodontic instrument
Process for transmitting route information which concerns a route of a vehicle in a road network between a traffic information center and a terminal in a vehicle, traffic information center an
Hydraulic rotary actuating apparatus
Apparatus and process for producing a covered elastic composite yarn