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Class Information
Number: 257/E29.344
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Semiconductors devices adapted for rectifying, amplifying, oscillating, or switching, capacitors, or resistors with at least one potential-jump barrier or surface barrier (epo) > Types of semiconductor device (epo) > Controllable only by variation of electric current supplied or only electric potential applied to electrode carrying current to be rectified, amplified, oscillated, or switched (epo) > Capacitor with potential barrier or surface barrier (epo) > Variable capacitance diode (e.g., varactors) (epo)
Description: This subclass is indented under subclass E29.342. This subclass is substantially the same in scope as ECLA classification H01L29/93.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8614472 Systems and methods for adjusting ultra-small metal-oxide-metal capacitors Dec. 24, 2013
8598683 Semiconductor structure having varactor with parallel DC path adjacent thereto Dec. 3, 2013
8558350 Metal-oxide-metal capacitor structure Oct. 15, 2013
8530948 Varactors including interconnect layers Sep. 10, 2013
8531006 Memory capacitor made from field configurable ion-doped materials Sep. 10, 2013
8502348 Differential varactor device Aug. 6, 2013
8492823 High performance tapered varactor Jul. 23, 2013
8450832 Large tuning range junction varactor May. 28, 2013
8378453 Devices including composite thermal capacitors Feb. 19, 2013
8362591 Integrated circuits and methods of forming the same Jan. 29, 2013
8334571 Junction varactor for ESD protection of RF circuits Dec. 18, 2012
8242581 Mixed-gate metal-oxide-semiconductor varactors Aug. 14, 2012
8232624 Semiconductor structure having varactor with parallel DC path adjacent thereto Jul. 31, 2012
8217497 FIN differential MOS varactor diode Jul. 10, 2012
8217496 Internal matching transistor Jul. 10, 2012
8217489 Nonvolatile memory element having a tantalum oxide variable resistance layer Jul. 10, 2012
8125021 Non-volatile memory devices including variable resistance material Feb. 28, 2012
8115281 Differential varactor Feb. 14, 2012
8053866 Varactor structures Nov. 8, 2011
8039922 Variable capacitor employing MEMS technology Oct. 18, 2011
8013379 Semiconductor variable capacitor and method of manufacturing the same Sep. 6, 2011
7989302 Methods of forming a hyper-abrupt P-N junction and design structures for an integrated circuit Aug. 2, 2011
7989868 MOS varactor and fabricating method of the same Aug. 2, 2011
7989922 Highly tunable metal-on-semiconductor trench varactor Aug. 2, 2011
7952131 Lateral junction varactor with large tuning range May. 31, 2011
7923818 Varactor element and low distortion varactor circuit arrangement Apr. 12, 2011
7821053 Tunable capacitor Oct. 26, 2010
7821103 Counter-doped varactor structure and method Oct. 26, 2010
7804119 Device structures with a hyper-abrupt P-N junction, methods of forming a hyper-abrupt P-N junction, and design structures for an integrated circuit Sep. 28, 2010
7741187 Lateral junction varactor with large tuning range Jun. 22, 2010
7714412 MOS varactor using isolation well May. 11, 2010
7704845 Varactor and method for manufacturing the same Apr. 27, 2010
7696604 Silicon germanium heterostructure barrier varactor Apr. 13, 2010
7692271 Differential junction varactor Apr. 6, 2010
7647218 MOS varactor property detection method and MOS varactor manufacturing method using the same Jan. 12, 2010
7612424 Nanoelectromechanical bistable cantilever device Nov. 3, 2009
7592659 Field effect transistor and an operation method of the field effect transistor Sep. 22, 2009
7579644 Adjustable on-chip sub-capacitor design Aug. 25, 2009
7550820 Reverse-biased PN diode decoupling capacitor Jun. 23, 2009
7545007 MOS varactor with segmented gate doping Jun. 9, 2009
7525177 Controllable varactor within dummy substrate pattern Apr. 28, 2009
7518215 One mask hyperabrupt junction varactor using a compensated cathode contact Apr. 14, 2009
7449389 Method for fabricating a semiconductor structure Nov. 11, 2008
7388276 Metal-insulator varactor devices Jun. 17, 2008
7388247 High precision microelectromechanical capacitor with programmable voltage source Jun. 17, 2008
7378327 Method for fabricating a junction varactor with high Q factor May. 27, 2008
7335956 Capacitor device with vertically arranged capacitor regions of various kinds Feb. 26, 2008
7259418 Semiconductor device including a MISFET and a MIS capacitor Aug. 21, 2007
7235862 Gate-enhanced junction varactor Jun. 26, 2007
7067384 Method of forming a varactor with an increased linear tuning range Jun. 27, 2006

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