Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
(4943
Human and mouse targeting peptides identified by phage display
Storage apparatus and method including page discard processing for primary and secondary volumes configured as a copy pair
Communications in an asynchronous cellular wireless network
Flip flop shoe
Method and system for coordinating client and host security modules
Operation controlling apparatus
  Randomly Featured Patents
Tricyclic heterocyclic compounds, their production and use
Enhanced wireless handset, including direct handset-to-handset communication mode
Sensing contact probe
Surface modifying layers for organic thin film transistors
Beverage container
Cross-linked glycopeptide-cephalosporin antibiotics
Process for preparing polyfluoro .gamma.-ketoesters and lactone isomers thereof
Undulatory motion relaxation device for furniture with a suspension system
Flower pot cover
Ventilator face panel