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Class Information
Number: 257/E21.085
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)
Description: This subclass is indented under subclass E21.04. This subclass is substantially the same in scope as ECLA classification H01L21/18.
Sub-classes under this class:
| Class Number |
Class Name |
Patents |
| 257/E21.086 |
Intermixing or interdiffusion or disordering of group iii-v heterostructures, e.g., iild (epo) |
41 |
| 257/E21.087 |
Joining of semiconductor body for junction formation (epo) |
18 |
| 257/E21.089 |
Multistep processes for manufacture of device using quantum interference effect, e.g., electrostatic aharonov-bohm effect (epo) |
12 |
| 257/E21.09 |
Deposition of semiconductor material on substrate, e.g., epitaxial growth, solid phase epitaxy (epo) |
153 |
| 257/E21.135 |
Diffusion of impurity material, e.g., doping material, electrode material, into or out of a semiconductor body, or between semiconductor regions; interactions between two or more impurities; redistribution of impurities (epo) |
91 |
| 257/E21.154 |
Alloying of impurity material, e.g., doping material, electrode material, with a semiconductor body (epo) |
108 |
| 257/E21.158 |
Manufacture of electrode on semiconductor body using process other than by epitaxial growth, diffusion of impurities, alloying of impurity materials, or radiation bombardment (epo) |
243 |
| 257/E21.211 |
Treatment of semiconductor body using process other than deposition of semiconductor material on a substrate, diffusion or alloying of impurity material, or radiation treatment (epo) |
131 |
| 257/E21.328 |
Radiation treatment (epo) |
23 |
| 257/E21.35 |
Multi-step process for manufacture of device of bipolar type, e.g., diodes, transistors, thyristors, resistors, capacitors) (epo) |
16 |
| 257/E21.394 |
Multi-step process for the manufacture of unipolar device (epo) |
3 |
Patents under this class:
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