Resources Contact Us Home
Browse by Category: Main > Physics
Class Information
Number: 257/E21.491
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 other than carbon, si, ge, sic, se, te, cu 2 o, cui, and group iii-v compounds with or without impurities, e.g., doping materials (epo) > Treatment of semiconductor body using process other than electromagnetic radiation (epo) > To change their surface-physical characteristics or shape, e.g., etching, polishing, cutting (epo) > To form insulating layer thereon, e.g., for masking or by using photolithographic techniques; post treatment of these layers (epo) > Post treatment of insulating layer (epo) > Doping layer (epo)
Description: This subclass is indented under subclass E21.489. This subclass is substantially the same in scope as ECLA classification H01L21/4757C.

Patents under this class:

Patent Number Title Of Patent Date Issued
8669169 Diffusion sources from liquid precursors Mar. 11, 2014

  Recently Added Patents
Pharmaceutical compositions of entacapone, levodopa and carbidopa with improved bioavailability
Motor vehicle, toy and/or replica
Surfcraft fin
Air-fuel ratio control apparatus for an internal combustion engine
System and method for creating a build set and bill of materials from a master source model
Image forming apparatus, control method, and storage medium
Automatic adjustment of devices in a home entertainment system
  Randomly Featured Patents
Tail-braced wing aircraft and configurations for achieving long supersonic range and low sonic boom
Data processor system having improved data throughput in a multiprocessor system
Television receiver
Fan body
Energy saving window shade system
Noise reduction filter system for a coriolis flowmeter
Writing element for use in ball point pen
Method for providing a hermetically sealed coin cell
Detergent compositions