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
Managing delivery of application server content
Method and arrangement for controlling semiconductor component
Polypeptides and immunizing compositions containing gram positive polypeptides and methods of use
Micro-fluidic device
Oxide material, electrophotographic photoreceptor, process cartridge, and image forming device
Digital watermark embedding apparatus, digital watermark embedding method, and digital watermark detection apparatus
Single well reservoir characterization apparatus and methods
  Randomly Featured Patents
High speed network switch bus clock
Vent pipe using ultraviolet light for purification of discharge gases
Network and method for providing cross-media connections
Arthroscopy pouch
Computerized overcurrent detector
Dynamic RAM having full-sized dummy cell
Semiconductor device having a flexible board for connection to a semiconductor chip mounted on an insulating substrate
Resuscitation tube
Method and device for performing online aberrometry in refractive eye correction
Computer supported retail shopping systems and methods