Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Physics
Class Information
Number: 257/E21.354
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Processes or apparatus adapted for manufacture or treatment of semiconductor or solid-state devices or of parts thereof (epo) > Manufacture or treatment of semiconductor device (epo) > Device having at least one potential-jump barrier or surface barrier, e.g., pn junction, depletion layer, carrier concentration layer (epo) > Device having semiconductor body comprising group iv elements or group iii-v compounds with or without impurities, e.g., doping materials (epo) > Multi-step process for manufacture of device of bipolar type, e.g., diodes, transistors, thyristors, resistors, capacitors) (epo) > Device comprising one or two electrodes, e.g., diode, resistor or capacitor with pn or schottky junctions (epo) > Diode (epo) > Transit time diode, e.g., impatt, trapatt diode (epo)
Description: This subclass is indented under subclass E21.352. This subclass is substantially the same in scope as ECLA classification H01L21/329B3.










Patents under this class:

Patent Number Title Of Patent Date Issued
8492866 Isolated Zener diode Jul. 23, 2013
4872039 Buried lateral diode and method for making same Oct. 3, 1989











 
 
  Recently Added Patents
Fixing apparatus
Method and system for physical verification using network segment current
Control service for relational data management
Can seam inspection
Wire guide
Multi-touch recognition resistive touch screen for recognizing multi-touch coordinates through capacitor charging time
Color LED display device without color separation
  Randomly Featured Patents
Apparatus for continuous extrusion
Gas turbine combustor
Container and sealed closure means
Probe-type read-out thermometer
Semiconductor device with high voltage transistor
Computer printer
Handheld two-way radio with hinged cover
Dispensing fibrous cellulose material
Multi-function imaging and printing device
Method to reduce perceptual contouring in display systems