Patents
Patents for H01G 7 - Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture (2,230)
01/2002
01/09/2002EP1169746A1 Tunable microwave devices
01/02/2002EP1042769B1 Digitally adjustable electronic capacitor
01/02/2002CN1329762A Electrically tunable filters with dielectric varators
12/2001
12/18/2001US6331929 Multi layer ceramic capacitor
12/18/2001CA2124294C Devices for manufacturing electrets, and electrets obtained thereby
12/13/2001US20010050598 Band-Switched Integrated Voltage Controlled Oscillator
12/12/2001CN1326599A Voltage tunable varactors and tunable devices including such varators
12/06/2001US20010048352 Tunable filter arrangement
12/05/2001CN1325552A Ferroelectric raractor with built-in DC blocks
11/2001
11/22/2001WO2001088933A1 Photolithographically-patterned variable capacitor structures and method of making
11/20/2001US6321114 Implantable medical device having flat electrolytic capacitor with consolidated electrode tabs and corresponding feedthroughs
11/08/2001WO2001084572A2 Tunable devices incorporating cacu3ti4o¿12?
11/08/2001CA2404407A1 Tunable devices incorporating cacu3 ti4 o12
11/03/2001WO2001084698A1 Fixed frequency regulation circuit employing a voltage variable dielectric capacitor
10/2001
10/25/2001WO2001080257A1 Method of making electrets through vapor condensation
10/25/2001CA2401620A1 Method of making electrets through vapor condensation
10/18/2001WO2001078230A1 Tunable filter arrangement
10/17/2001EP1145362A1 Electrically tunable filters with dielectric varactors
10/17/2001EP1144075A2 Stable polymeric electret materials
09/2001
09/27/2001WO2000000267A3 Stable polymeric electret materials
09/27/2001EP1144075A3 Stable polymeric electret materials
09/26/2001EP1135825A1 Ferroelectric varactor with built-in dc blocks
09/20/2001WO2001068554A1 Ceramic mass, method for the production of a ceramic mass and use of a ceramic mass
09/20/2001US20010022487 Ceramic element, method for producing ceramic element, display device, relay device, and capacitor
09/13/2001US20010021538 Micromechanical component and process for its fabrication
08/2001
08/22/2001CN1309401A Voltage-variable capacitor with improved C-V linearity
08/21/2001US6278158 Voltage variable capacitor with improved C-V linearity
08/08/2001EP1121725A1 Voltage tunable varactors and tunable devices including such varactors
08/07/2001US6272003 Floating plate capacitor with extremely wide band low impedance
08/07/2001CA2113048C Fabrication process of sio2 electrets and to the electrets obtained
07/2001
07/24/2001US6265811 Ceramic element, method for producing ceramic element, display device, relay device and capacitor
07/19/2001WO2001052401A1 A band-switched integrated voltage controlled oscillator
07/17/2001US6261342 Method of removing particulate solid or liquid aerosol from a gas
07/11/2001EP1113981A1 Micromechanical component and its production method
07/04/2001EP1113498A2 Voltage variable capacitor with improved c-v linearity
06/2001
06/05/2001CA2218264C Metallized film capacitor and manufacturing process
05/2001
05/29/2001US6238466 Electret articles and filters with increased oily mist resistance
04/2001
04/25/2001EP1093474A1 Fluorinated electret
04/11/2001EP1089791A1 Implantable medical device having flat electrolytic capacitor with consolidated electrode tabs and corresponding feedthroughs
04/10/2001US6214094 Nonwoven web comprising electret fibers that comprise a polymer and performance-enhancing additive; useful in respirators
04/04/2001EP1088316A1 Thin electret layer and corresponding production method
03/2001
03/29/2001WO2000062367A8 Tunable microwave devices
03/27/2001US6207335 Use of metal carboxylates and sulfonates as charge control agents
01/2001
01/31/2001CN1282085A 堆积陶瓷电容器 Stacked ceramic capacitors
01/24/2001CN1281166A Application of improved green pigment in electronic photo toner and developer powdered coating and ink jet printing ink
01/16/2001CA2214930C The method of obtaining the adjustable capacitor
12/2000
12/21/2000DE19927835A1 Verwendung von verbesserten Cyanpigmenten in elektrophotographischen Tonern und Entwicklern, Pulverlacken und Ink-Jet-Tinten Use of improved Cyanpigmenten in electrophotographic toners and developers, powder coatings and inkjet inks
12/20/2000EP1061419A1 Use of cyan pigments in electrophotographic toners, developers, powder lacquers and ink-jet-inks
12/12/2000US6159649 A calcium anionic dye particles comprising an auxiliary selected from the group consisting of a rosin, a salt of a rosin, abietic acid, and a salt of an abietic acid
11/2000
11/30/2000WO2000072382A1 Ferroelectric based memory devices utilizing hydrogen getters and recovery annealing
11/14/2000US6146905 Ferroelectric dielectric for integrated circuit applications at microwave frequencies
11/01/2000CN1272069A Oily mist resistant electret articles and filters
10/2000
10/31/2000US6141205 Implantable medical device having flat electrolytic capacitor with consolidated electrode tabs and corresponding feedthroughs
10/24/2000US6137323 Low-consumption frequency translator
10/19/2000WO2000062367A1 Tunable microwave devices
10/19/2000CA2372103A1 Tunable microwave devices
10/11/2000EP1043741A2 Voltage dependant thin film capacitor
10/11/2000EP1042769A2 Digitally adjustable electronic capacitor
10/05/2000DE19915247A1 Spannungsabhängiger Dünnschichtkondensator Voltage-dependent thin film capacitor
10/03/2000CA2203524C Polycrystalline ferroelectric capacitor heterostructure employing hybrid electrodes
09/2000
09/27/2000CN1267895A Stacked ceramic capacitor
09/19/2000US6121648 Ferroelectric based memory devices utilizing hydrogen getters and recovery annealing
09/19/2000US6119691 Electret filter media
08/2000
08/29/2000US6110791 Method of making a semiconductor variable capacitor
08/08/2000US6100773 Impedance matching device
08/01/2000US6097586 Variable capacitor
08/01/2000US6096434 The conductive oxide thin film is an epitaxial film composed of strontium ruthenate formed on silicon substrate
07/2000
07/25/2000US6093575 Semiconductor device and production method of a semiconductor device having a capacitor
07/19/2000EP1019173A1 Oily mist resistant electret articles and filters
07/05/2000EP0895642B1 Variable capacitor
06/2000
06/15/2000WO2000035042A1 Electrically tunable filters with dielectric varactors
06/15/2000CA2352166A1 Electrically tunable filters with dielectric varactors
05/2000
05/30/2000CA2183477C Variable capacitor
05/18/2000WO2000028613A1 Ferroelectric varactor with built-in dc blocks
05/18/2000CA2349636A1 Ferroelectric varactor with built-in dc blocks
05/17/2000EP0931326B1 Method for manufacturing a low self-inductance capacitor
05/16/2000US6063140 Process for manufacturing a metallized film capacitor
05/03/2000CN1052042C Method for charging electric filter media
04/2000
04/27/2000WO2000024079A1 Voltage tunable varactors and tunable devices including such varactors
04/27/2000DE19839606C1 Mikromechanisches Bauelement und Verfahren zu dessen Herstellung Micromechanical component and method for its production
04/27/2000CA2346856A1 Voltage tunable varactors and tunable devices including such varactors
04/19/2000EP0705527B1 Folded dielectric film element and method for manufacturing the same
04/11/2000US6048737 Forming conductive oxide layer between a metal electrode and a ferroelectric layer, capable of enhancing the fatigue behavior in addition to reducing the leakage current
03/2000
03/29/2000EP0988329A2 Electrets
03/09/2000WO2000012427A1 Micromechanical component and its production method
02/2000
02/24/2000DE19837522A1 Verwendung von Metall-Carboxylaten und -Sulfonaten als Ladungssteuermittel Use of metal carboxylates, and sulfonates as charge control agents
02/23/2000EP0981073A2 Use of metal-carboxylates and metal-sulfonates as charge control agent
02/19/2000CA2280353A1 Use of metal carboxylates and sulfonates as charge control agents
02/08/2000US6023408 Floating plate capacitor with extremely wide band low impedance
01/2000
01/25/2000US6018282 Voltage-controlled variable-passband filter and high-frequency circuit module incorporating same
01/13/2000WO2000001737A1 Fluorinated electret
01/13/2000CA2334806A1 Fluorinated electret
01/06/2000WO2000000267A2 Stable polymeric electret materials
12/1999
12/29/1999WO1999066985A1 Implantable medical device having flat electrolytic capacitor with consolidated electrode tabs and corresponding feedthroughs
12/28/1999US6007868 Method of manufacturing ferroelectric bismuth-titanate layers on a substrate from solution
12/14/1999US6001299 Process and apparatus for manufacturing an electret article
11/1999
11/18/1999WO1999059172A1 Thin electret layer and corresponding production method
11/16/1999US5986864 Intercalation-based voltage variable capacitor
11/09/1999US5982608 Semiconductor variable capacitor
10/1999
10/13/1999CN1231757A Method for manufacturing a low self-inductance capacitor
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