Resources Contact Us Home
Browse by Category: Main > Physics
Class Information
Number: 257/E21.369
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 three or more electrodes (epo)
Description: This subclass is indented under subclass E21.35. This subclass is substantially the same in scope as ECLA classification H01L21/33.

Sub-classes under this class:

Class Number Class Name Patents
257/E21.388 Thyristor (epo) 74
257/E21.37 Transistor (epo) 83

Patents under this class:

Patent Number Title Of Patent Date Issued
8410554 Method, structure and design structure for customizing history effects of SOI circuits Apr. 2, 2013
8174054 Field effect transistor with interdigitated fingers and method of manufacturing thereof May. 8, 2012
7422970 Method for modifying circuit within substrate Sep. 9, 2008
5465001 Electronic component capable of negative dynamic resistance Nov. 7, 1995

  Recently Added Patents
Light emitted diode
Compact semiconductor memory device having reduced number of contacts, methods of operating and methods of making
Phenethanolamine derivatives for treatment of respiratory diseases
Epoxy composition for encapsulating an optical semiconductor element
Beverage container lid
Selective high frequency spinal cord modulation for inhibiting pain with reduced side effects, and associated systems and methods
Sweetener compositions having enhanced sweetness and improved temporal and/or flavor profiles
  Randomly Featured Patents
Method and apparatus for metering liquid media in offset printing machines, preferably for varnishing units
Detachable coupling for a suction head
Pro1556 Polypeptide
Fiber amplifier having an anisotropic numerical aperture for efficient coupling of pump energy
Apparatus for uninterrupted flushing a well bore
Optical communication system and apparatus for compensation or emulation of PMD effects
Easy access tumble seat with interated child seat and tumble lockout when child seat is deployed
Indane derivatives for antipsychotic compositions
Machine for forming cylindrical bales of crop
Method and apparatus for determining the location of a wireless client device on a wireless network