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Class Information
Number: 257/E21.364
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) > Capacitor with pn - or schottky junction, e.g., varactor (epo)
Description: This subclass is indented under subclass E21.351. This subclass is substantially the same in scope as ECLA classification H01L21/329D.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7402890 |
Method for symmetric capacitor formation |
Jul. 22, 2008 |
| 7378327 |
Method for fabricating a junction varactor with high Q factor |
May. 27, 2008 |
| 7364967 |
Methods of forming storage capacitors for semiconductor devices |
Apr. 29, 2008 |
| 7285460 |
Semiconductor device and method of manufacturing the same |
Oct. 23, 2007 |
| 6995068 |
Double-implant high performance varactor and method for manufacturing same |
Feb. 7, 2006 |
| 6949440 |
Method of forming a varactor |
Sep. 27, 2005 |
| 6867107 |
Variable capacitance device and process for manufacturing the same |
Mar. 15, 2005 |
| 6686640 |
Varactor having improved Q-factor and method of fabricating the same using SiGe heterojunction bipolar transistor |
Feb. 3, 2004 |
| 6387769 |
Method of producing a schottky varicap |
May. 14, 2002 |
| 5854117 |
Method of manufacturing a varicap diode, a varicap diode, a receiver device, and a TV receiver set |
Dec. 29, 1998 |
| 5739570 |
Integrated circuit |
Apr. 14, 1998 |
| 5627402 |
Variable-capacitance device and semiconductor integrated circuit device having such variable-capacitance device |
May. 6, 1997 |
| 5514620 |
Method of producing PN junction device |
May. 7, 1996 |
| 5506442 |
Variable-capacitance device and semiconductor integrated circuit device having such variable-capacitance device |
Apr. 9, 1996 |
| 5466303 |
Semiconductor device and manufacturing method therefor |
Nov. 14, 1995 |
| 5236863 |
Isolation process for VLSI |
Aug. 17, 1993 |
| 5182223 |
Method of making an integrated circuit with capacitor |
Jan. 26, 1993 |
| 4999309 |
Aluminum-implant leakage reduction |
Mar. 12, 1991 |
| 4868134 |
Method of making a variable-capacitance diode device |
Sep. 19, 1989 |
| 4814284 |
GaAs plannar diode and manufacturing method therefor |
Mar. 21, 1989 |
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