Patents for H01F 21 - Variable inductances or transformers of the signal type (1,432)
06/2005
06/07/2005US6901654 Method of fabricating a coil and clamp for variable reluctance transducer
05/2005
05/26/2005WO2005048451A1 Communication transformer
05/19/2005US20050104704 Iron core winding, method of winding an iron core, and variable reluctance angle detector
05/12/2005WO2005043602A2 Three-dimensional inductive micro components
05/05/2005US20050093667 Three-dimensional inductive micro components
05/04/2005EP1527462A1 Multi-tap coil
04/2005
04/28/2005US20050088267 Controlled inductance device and method
04/21/2005CA2537700A1 Controllable inductive device
04/14/2005WO2005034239A2 Variable inductor for integrated circuit and printed circuit board
04/12/2005US6879233 Inductor induced light emitting bottle
04/07/2005WO2004102596A3 Coupled high temperature superconductor coils
04/05/2005US6876521 Method of making a solid state inductor
03/2005
03/31/2005US20050068146 Variable inductor for integrated circuit and printed circuit board
03/24/2005US20050062573 Non-contact magnetically variable differential transformer
03/10/2005US20050052272 Inductive component
03/03/2005US20050046420 Coupled high temperature superconductor coils
02/2005
02/22/2005US6859130 Low-profile transformer and method of manufacturing the transformer
02/17/2005US20050036638 Transmission coil system and remote control for a hearing aid
02/15/2005US6856499 MEMS variable inductor and capacitor
02/09/2005CN1578992A Multi-phasemagnetic element and production method therefor
02/08/2005US6853286 Flat coil component, characteristic adjusting method of flat coil component, ID tag, and characteristic adjusting method of ID tag
02/03/2005US20050024178 Switchable inductance
02/02/2005EP1503389A1 Switchable inductance
01/2005
01/26/2005CN1571080A 可调电感器 Adjustable inductor
01/11/2005US6842101 Tunable inductor
12/2004
12/30/2004US20040263307 Adjustable coilform for variable inductance
12/30/2004US20040263276 System and method for suppressing radio frequency (rf) radiation
12/09/2004US20040246084 Multi-phasemagnetic element and production method therefor
12/09/2004DE10323219B3 Sendespulensystem und Fernbedienung für ein Hörhilfsgerät Transmitting coil system and remote control for a hearing aid
12/08/2004EP1484773A1 Increasing performance of planar inductors used in broadband applications
11/2004
11/25/2004WO2004102596A2 Coupled high temperature superconductor coils
11/25/2004US20040233029 Center tapped chip inductor
11/24/2004EP1480492A2 Transmission coil system and remote control for a hearing aid
11/23/2004US6822546 Transformer arrangement for combined pots and xDSL service
11/18/2004US20040227607 Inductor induced light emitting bottle
11/03/2004EP1473547A1 Inductive angular position sensor
10/2004
10/28/2004US20040212474 Non-contact magnetically variable differential transformer
10/21/2004US20040207503 Self-damped inductor
10/12/2004US6803758 Non-contact magnetically variable differential transformer
10/06/2004CN1534695A Choke and electronic appartus using the same
09/2004
09/30/2004US20040190217 Mems variable inductor and capacitor
09/30/2004US20040189430 Choke coil and electronic device using the same
09/30/2004US20040189422 Increasing performance of planar inductors used in broadband applications
09/30/2004DE10311071A1 Magnetanordnung Magnet assembly
09/29/2004EP1463070A2 Mems variable inductor and capacitor
09/23/2004WO2004081955A1 Magnet arrangement
09/22/2004CN1530973A Electronic element and producing method thereof
09/15/2004EP1456859A1 Inductive component
09/14/2004US6791446 Inductance component comprising a permanent magnet greater in sectional area than a magnetic path and disposed in a magnetic gap
09/09/2004US20040174241 Planar transformer and output inductor structure with single planar winding board and two magnetic cores
09/09/2004US20040174240 Electrical device and method of producing the same
09/02/2004US20040168303 Inductor component containing permanent magnet for magnetic bias and method of manufacturing the same
08/2004
08/25/2004EP1450126A2 Iron core winding and variable reluctance angle detector
08/19/2004DE202004006047U1 Variable inductance uses a steel spring with a conducting surface coating and with mechanical distortion to change the inductance
08/04/2004CN1518013A Choke and electronic equipment using it
07/2004
07/29/2004WO2004064084A2 Self-damped inductor
07/29/2004US20040145442 Choke coil and electronic device using the same
07/22/2004US20040140528 Stacked variable inductor
07/21/2004EP1439553A1 Low-profile transformer and method of manufacturing the transformer
07/21/2004CN1158679C Variable inductor element
07/15/2004DE10260246A1 Spulenanordnung mit veränderbarer Induktivität Coil arrangement with variable inductance
07/08/2004US20040130318 Induction sensor using printed circuit
07/07/2004CN2624527Y Improved structure of frequency divider
07/06/2004US6759937 On-chip differential multi-layer inductor
07/01/2004WO2004055739A1 Induction sensor using printed circuit
07/01/2004DE10259117A1 Inductive component to be magnetically compensated in ferromagnetic circuit has coil and magnetic circuit made from ferromagnetic material
06/2004
06/24/2004WO2004053502A1 Mobile member speed sensor
06/24/2004US20040119577 Coil arrangement with variable inductance
06/23/2004EP1431986A1 Coil assembly with variable inductance
06/22/2004US6753997 Magnetic field generator for optical devices utilizing magneto-optical effect
06/16/2004EP1429352A1 Electrical device and method of producing the same
06/16/2004CN1154128C Variable inducer
06/10/2004US20040108935 On-chip differential multi-layer inductor
06/10/2004US20040108927 On-chip multiple tap transformer and inductor
05/2004
05/20/2004US20040095689 Method of making a solid state inductor
05/19/2004CN2617006Y High frequency heavy-current transformer
05/13/2004US20040090298 Variable inductor and method for adjusting inductance of same
05/13/2004DE10249919A1 Spulenanordnung als Magnetfeldsensor Coil assembly as a magnetic field sensor
05/06/2004WO2004038440A1 Coil assembly as magnetic field sensor for position determination
04/2004
04/27/2004US6725729 Electronic transducer for measuring flexion
04/22/2004US20040075428 Linear variable differential transformers for high precision position measurements
04/21/2004CN1491423A Low-profile transformer and method of manufacturing the transformer
04/21/2004CN1146927C Hybrid coil of printed circuit transformer of radio frequency mixer
04/20/2004US6722017 Planar inductor
04/15/2004US20040070480 Low-profile transformer and method of manufacturing the transformer
04/14/2004CN1489158A Adjustable inductor and its inductance adjusting method
04/01/2004WO2004027793A1 Controlled inductance device and method
03/2004
03/25/2004US20040056748 Angle sensor, angle-torque sensor and electric power steering unit using same
03/23/2004US6710693 Inductor component containing permanent magnet for magnetic bias and method of manufacturing the same
03/17/2004EP1398802A2 Variable inductor and method for adjusting inductance of same
03/17/2004CN1483136A Improved linear variable differential transformer for high-accuracy posotion survey
03/16/2004US6707367 On-chip multiple tap transformer and inductor
03/11/2004WO2004021374A1 Variable inductive element, multilayer substrate with built-in variable inductive element, semiconductor chip, and chip variable inductive element
03/11/2004WO2004021373A1 Inductance device, multilayer substrate with built-in inductance device, semiconductor chip, and chip inductance device
03/04/2004WO2004019352A1 Multi-phase-use magnetic element and production method therefor
01/2004
01/29/2004WO2004010444A1 Multi-tap coil
01/29/2004US20040018823 On-chip differential inductor and applications thereof
01/29/2004US20040017278 On-chip multiple tap transformer and inductor
01/29/2004DE10117290B4 Variabler Drei-Anschluß-Induktor The three-terminal variable inductor
01/08/2004US20040004525 Planar inductor
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