Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Physics
Class Information
Number: 257/E21.225
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) > 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) > To change their surface-physical characteristics or shape, e.g., etching, polishing, cutting (epo) > Chemical or electrical treatment, e.g., electrolytic etching (epo) > Chemical cleaning (epo) > Cleaning diamond or graphite (epo)
Description: This subclass is indented under subclass E21.224. This subclass is substantially the same in scope as ECLA classification H01L21/306N8.










Patents under this class:

Patent Number Title Of Patent Date Issued
7327000 Patterned thin film graphite devices and method for making same Feb. 5, 2008
5500393 Method for fabricating a schottky junction Mar. 19, 1996
5403436 Plasma treating method using hydrogen gas Apr. 4, 1995
5213622 Cleaning agents for fabricating integrated circuits and a process for using the same May. 25, 1993











 
 
  Recently Added Patents
Method and apparatus for user selection of advertising combinations
Thwarting keyloggers using proxies
System and method for multi-threaded OFDM channel equalizer
Perspective runway system
Methods and system for providing drug pricing information from multiple pharmacy benefit managers (PBMs)
Organic light emitting diode light source device
Image heating apparatus
  Randomly Featured Patents
Adhering member and method for producing adhering member
Process for treating wood
Method and apparatus for measuring change in magnetic induction of a magnetic material with respect to temperature
Xanthines in the 7th position with a benzyl acetic acid moiety
Light-sensitive silver halide photographic materials and process for incorporating hydrophobic photographic additives into hydrophilic colloid compositions
Frame mounting bracket for a swinging door
Reversing PSC motor design capable of high reversal reptition rate
Interleaved input signal path for multiplexed input
Can compactor refuse container lid
Method of stabilizing the level of an audio signal in television broadcasting