Resources Contact Us Home
Browse by Category: Main > Physics
Class Information
Number: 257/E29.172
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) > Bipolar device (epo) > Double-base diode (epo)
Description: This subclass is indented under subclass E29.171. This subclass is substantially the same in scope as ECLA classification H01L29/70B.

Patents under this class:

Patent Number Title Of Patent Date Issued
7671379 Semiconductor system for voltage limitation Mar. 2, 2010
7211851 Ferroelectric memory May. 1, 2007
6037632 Semiconductor device Mar. 14, 2000
4292644 Control of valley current in a unijunction transistor by electron irradiation Sep. 29, 1981
4182965 Semiconductor device having two intersecting sub-diodes and transistor-like properties Jan. 8, 1980

  Recently Added Patents
Halogen-free flame retardants for epoxy resin systems
Towel clip
Method and system for updating device management application meter read logic
Power supply system for a data storage system and a method of controlling a power supply
Triple-action pest control formulation and method
Proximity-based mobile message delivery
Blended block copolymer composition
  Randomly Featured Patents
Daily task and memory assistance using a mobile device
Interconnection structure for improving signal integrity
Modular humeral component system
X-ray CT imaging method and X-ray CT apparatus
Latex complexes as stabilized colorant
Phosphors containing oxides of alkaline-earth and group-13 metals, and light sources incorporating the same
Microelectromechanical devices useful for manipulating cells or embryos, kits thereof, method of making same, and methods of use thereof
Low stress relaxation extrudable elastomeric composition
Track rail
Garment for training swimmers