H01F - Magnets; Inductances; Transformers; Selection of materials for their magnetic properties

More topics under "H01F - Magnets; Inductances; Transformers; Selection of materials for their magnetic properties" (175,410)
H01F 1 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties (23,146)
H01F 10 - Thin magnetic films, e.g. of one-domain structure (7,026)
H01F 13 - Apparatus or processes for magnetising or demagnetising (2,363)
H01F 17 - Fixed inductances of the signal type (10,329)
H01F 19 - Fixed transformers or mutual inductances of the signal type (1,296)
H01F 21 - Variable inductances or transformers of the signal type (1,432)
H01F 27 - Details of transformers or inductances, in general (43,362)
H01F 29 - Variable transformers or inductances not covered by group (3,889)
H01F 3 - Cores, yokes or armatures (3,764)
H01F 30 - Fixed transformers not covered by group (4,595)
H01F 36 - Transformers with superconductive windings or with windings operating at cryogenic temperatures (252)
H01F 37 - Fixed inductances not covered by group (2,202)
H01F 38 - Adaptations of transformers or inductances for specific applications or functions (13,550)
H01F 41 - Apparatus or processes specially adapted for manufacturing or assembling the devices covered by this subclass (27,155)
H01F 5 - Coils (6,752)
H01F 6 - Superconducting magnets; Superconducting coils (4,230)
H01F 7 - Magnets (20,067)

Patents for H01F - Magnets; Inductances; Transformers; Selection of materials for their magnetic properties (205)
08/2005
08/16/2005	US6930580 Output choke for D.C. welder and method of using same
08/11/2005	US20050174127 Circuit component and transformer device with controllable impedance and with systems equipped with such devices
08/04/2005	WO2005059929A3 Magnetic rod apparatus and method for manipulating magnetic particles for detecting analytes
07/2005
07/21/2005	WO2005017926A3 Rotary machine and electromagnetic machine
07/14/2005	WO2005022564A3 Low cost electromagnetic energy absorbing, shrinkable tubing manufactured from conductive loaded resin-based materials
07/14/2005	US20050153136 Neodymium-iron-boron type magnetic powders manufactured from rapid solidification processes; corrosion and oxidation resistance
07/07/2005	WO2005008692A3 Form-less electronic device and methods of manufacturing
06/2005
06/30/2005	WO2005059929A2 Magnetic rod apparatus and method for manipulating magnetic particles for detecting analytes
06/15/2005	CN1206671C Compact transformer with a cover
06/09/2005	WO2005052960A2 Coating formulation and application of organic passivation layer onto iron-based rare earth powders
05/2005
05/26/2005	US20050110605 Controllable transformer
05/25/2005	CN1202935C Output choking coi lfor use on D.C. welding machine and method for using same
05/11/2005	CN1615462A Controllable transformer
05/05/2005	US20050093472 Balancing transformers for ring balancer
05/05/2005	US20050093471 Current sharing scheme for multiple CCF lamp operation
04/2005
04/28/2005	WO2005038828A2 A current sharing scheme and device for multiple ccf lamp operation
04/28/2005	WO2004070743A3 Transformer ignition circuit for a transformer coupled plasma source
03/2005
03/24/2005	WO2005027152A2 Magneto-mechanical apparatus
03/17/2005	WO2005024856A2 Method and system for providing a magnetic element including passivation structures
03/17/2005	WO2004070741A3 Power measurement in a transformer coupled plasma source
03/17/2005	WO2004049358A3 Multifunctional particulate material, fluid, and composition
03/10/2005	WO2005022564A2 Low cost electromagnetic energy absorbing, shrinkable tubing manufactured from conductive loaded resin-based materials
03/03/2005	US20050048674 Method and system for providing a magnetic element including passivation structures
03/03/2005	US20050046534 Form-less electronic device and methods of manufacturing
02/2005
02/24/2005	WO2005017926A2 Rotary machine and electromagnetic machine
02/22/2005	US6859128 Output choke for D.C. welder and method of using same
02/17/2005	WO2005015578A2 Dynamic degaussing system
02/09/2005	EP1504543A2 Data access arrangement using a high frequency transformer for electrical isolation
01/2005
01/27/2005	WO2005008692A2 Form-less electronic device and methods of manufacturing
01/19/2005	CN1568527A Switchable magnetic device
12/2004
12/02/2004	US20040239461 Magneto-mechanical apparatus
11/2004
11/24/2004	CN1177336C Noise filter, anti-noise electronic device
11/23/2004	US6822396 Apparatus including vacuum chamber surrounded by electrical transformer to induce electromagnetic field, having primary winding, plasma loop in chamber coupled as secondary winding, auxiliary secondary winding coupled to ignition circuit
11/16/2004	US6819096 Power measurement mechanism for a transformer coupled plasma source
10/2004
10/14/2004	US20040202204 Multiplexer
09/2004
09/07/2004	US6788180 Controllable transformer
08/2004
08/25/2004	EP1449043A1 Controllable transformer
08/19/2004	WO2004070743A2 Transformer ignition circuit for a transformer coupled plasma source
08/19/2004	WO2004070741A2 Power measurement in a transformer coupled plasma source
08/19/2004	US20040160190 Transformer ignition circuit for a transformer coupled plasma source
08/05/2004	US20040150386 Power measurement mechanism for a transformer coupled plasma source
07/2004
07/28/2004	CN1159738C Power supply system for welding
07/21/2004	CN1158678C Line interface transformer
06/2004
06/30/2004	CN1155974C Transformer for generating high voltage
06/10/2004	WO2004049358A2 Multifunctional particulate material, fluid, and composition
06/09/2004	EP1425763A1 Switchable magnetic device
06/03/2004	US20040105980 exhibiting one or more properties, such as magnetic, thermal, optical, electrical, biological, chemical, lubrication, and rheological; core particles of specified average particle size with a plurality of coatings
03/2004
03/30/2004	CA2284958C Output choke for d.c. welder and method of using same
03/04/2004	US20040042150 Dynamic degaussing system
01/2004
01/22/2004	WO2003098644A3 Data access arrangement using a high frequency transformer for electrical isolation
12/2003
12/25/2003	US20030234698 Circuit component and transformer device with controllable impedance and with systems equipped with such devices
11/2003
11/27/2003	WO2003098644A2 Data access arrangement using a high frequency transformer for electrical isolation
11/20/2003	US20030215020 Data access arrangement using a high frequency transformer for electrical isolation
06/2003
06/26/2003	US20030117251 Controllable transformer
06/26/2003	US20030117228 Circuit component and transformer device with controllable impedance and with systems equipped with such devices
05/2003
05/30/2003	WO2003044613A1 Controllable transformer
05/30/2003	CA2729421A1 Power conversion using controllable transformers
03/2003
03/06/2003	WO2003019583A1 Switchable magnetic device
11/2002
11/20/2002	CN1380156A Power supply system for arc welding
10/2002
10/29/2002	US6472851 Hybrid tap-changing transformer with full range of control and high resolution
09/2002
09/24/2002	US6456180 Line interface transformer
05/2002
05/15/2002	CN1349231A Compact transformer with a cover
01/2002
01/10/2002	US20020003420 Hybrid tap-changing transformer with full range of control and high resolution
08/2001
08/16/2001	US20010013819 Output choke for D.C. welder and method of using same
08/09/2001	US20010011938 Output choke for D.C. welder and method of using same
02/2001
02/27/2001	US6194684 Output choke for D.C. welder and method of using same
01/2001
01/10/2001	CN1279534A Noise Filter, anti-noise electronic device and method for eliminating noise
12/2000
12/13/2000	CN1276610A Transformer for generating high voltage
11/2000
11/22/2000	CN1274164A Line interface transformer
07/2000
07/27/2000	WO2000044006A2 Transformer with magnetic core of coiled wires
05/2000
05/17/2000	CN1253056A Output choking coil for use on D. C. welding machine and method for using same
05/10/2000	EP0999564A1 Output choke for a direct current welding device and method for adjusting the inductivity in the electrical output circuit of a direct current welding device
10/1999
10/26/1999	CA2062806C Coin testing apparatus
04/1999
04/27/1999	US5897410 Composite product consisting of microfibrous material and a polymer film, useful for coating cold injection molding manufactured articles
08/1998
08/20/1998	WO1998036431A1 Transposed cable for making windings in electric machines, manufacturing process of the same, and method of making a winding by said transposed cable
08/19/1998	EP0859381A1 Transposed cable for making windings in electric machines, manufacturing process of the same, and method of making a winding by said transposed cable
08/1997
08/19/1997	CA2024608C Magnetic materials for security applications
07/1997
07/30/1997	EP0786333A1 Composite product consisting of a leather-like microfibrous material and polymer film, useful for coating cold injection molding manufactured articles
02/1995
02/01/1995	EP0484343B1 Coin testing apparatus
05/1994
05/11/1994	EP0412137B1 Magnetic materials for security applications
05/1993
05/04/1993	US5207307 Coin testing apparatus
05/1992
05/13/1992	EP0484343A1 Coin testing apparatus.
03/1992
03/03/1992	CA1296511C Toroidal transformer and machines and methods for making same
12/1991
12/18/1991	EP0252141B1 Magnetic circuit device provided with a current coil
03/1991
03/19/1991	US5000800 Permanent magnet and method for producing the same
02/1991
02/13/1991	EP0412137A1 Magnetic materials for security applications.
01/1991
01/24/1991	WO1991001029A1 Coin testing apparatus
08/1990
08/22/1990	CN1044871A Transformers and cores for transformers
08/15/1990	CN1009231B Improved toroidal transformer and machines and methods for making same
07/1990
07/10/1990	WO1990007784A1 Magnetic materials for security applications
07/03/1990	CA2005429A1 Transformers and cores for transformers
12/1989
12/06/1989	EP0344542A2 An Nd-Fe-B sintered magnet and method for producing the same
12/05/1989	CA1263685A1 Appliance valve actuator coil with integral fuse
11/1989
11/07/1989	CA1262606A1 Method for replacing pcb-containing coolants in electrical induction apparatus with substantially pcb-free dielectric coolants
04/1988
04/05/1988	CA1234854A1 Electromagnet for electric switching device
01/1988
01/13/1988	EP0252141A1 Magnetic circuit device provided with a current coil.
07/1987
07/16/1987	WO1987004298A1 Magnetic circuit device provided with a current coil
02/1987
02/04/1987	CN85109646A Improved toroidal transformer and machines and methods for making same
10/1986
10/07/1986	CA1212435A1 Electrical transformer having corona shielding means
06/1986
06/03/1986	US4593244 Determination of the thickness of a coating on a highly elongated article

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