Patents
Patents for H01F 41 - Apparatus or processes specially adapted for manufacturing or assembling the devices covered by this subclass (27,155)
12/1987
12/10/1987DE3618144A1 Arrangement for winding filter coils
12/09/1987EP0248665A2 Rare earth-iron magnet and method of making same
12/08/1987US4711694 Process for producing a layer having a high magnetic anisotropy in a ferrimagnetic garnet
12/08/1987US4711019 Method of making core laminations, and punch die for carrying out the method
12/03/1987WO1987007425A1 Method for the preparation of permanent magnets by division of crystals
12/01/1987USH383 Laminated magnet field coil sheath
12/01/1987US4709847 Device for assembling electrical components on a terminal carrier plate
12/01/1987US4709471 Method of making a magnetic core
12/01/1987US4709470 Method and apparatus for fabricating a curved magnet coil
11/1987
11/25/1987EP0246827A1 Apparatus for fabricating a high voltage winding for a toroidal transformer
11/25/1987CN87201995U 镇流器 Ballast
11/25/1987CN87103615A Apparatus and method for fabricating high voltage winding for toroidal transformer
11/24/1987US4709221 Sheet coil
11/24/1987US4708976 Polymer compositions containing magnetically susceptible filler
11/17/1987US4707678 Consolidated magnetic core containing amorphous metal
11/17/1987US4707313 Ferrous metal, dielectrics, spraying
11/17/1987CA1229390A1 Transformer and process for its fabrication
11/11/1987EP0244968A2 Method for the thermal treatment of sintered metal permanent magnets
11/11/1987EP0244923A2 Method of winding a field coil with flattened round wire and field coil produced by said method
11/10/1987US4706058 Miniature inductor with molded cover
11/10/1987US4705613 Sputtering method of making thin film head having improved saturation magnetization
11/10/1987US4705578 Method of constructing a magnetic core
11/10/1987US4705566 Polishing composition for memory hard disc
11/10/1987US4704789 Method of manufacturing electromagnetic members
11/10/1987CA1229066A1 Thermally controlled sputtering of high anisotrophy magnetic material
11/05/1987DE3615037A1 Arrangement in the production of coil formers for SMD coils
11/04/1987EP0243627A1 Electro-deposited CoNiFe alloy for thin film heads
11/03/1987US4704592 Chip inductor electronic component
11/03/1987US4704199 Method of forming an iron oxide film by reacting sputtering with control of a glow discharge by monitoring an emission spectrum of iron from the glow discharge
10/1987
10/28/1987EP0242536A1 Device for winding coils on annular cores
10/28/1987CN87103212A Magnetic recording carrier
10/27/1987US4702935 Production method of a high magnetic permeability alloy film
10/27/1987US4702794 Production of thin film magnetic head
10/27/1987CA1228572A2 Sputtering device suitable for perpendicular recording medium
10/22/1987WO1987006196A1 Transfer medium
10/22/1987DE3612803A1 Wire winding machine, especially an armature winding machine
10/21/1987EP0241964A1 Conical coiling of wire on a spool with at least one conically formed flange
10/20/1987US4701735 Bobbins for electrical coils and method of manufacturing electrical coils therefrom
10/20/1987US4701385 Ion-implanted magnetic bubble device and a method of manufacturing the same
10/14/1987EP0241190A2 Method and apparatus for photodeposition of films on surfaces
10/14/1987EP0240755A1 Heat treating method for obtaining a flat magnetization curve in amorphous cores
10/13/1987US4699702 Process for preparing soft magnetic film of Permalloy
10/13/1987US4699184 Apparatus and method for fabricating a high voltage winding for a toroidal transformer
10/08/1987DE3609896A1 Winding machine
10/07/1987EP0240420A1 A method for manufacturing a continuous-length extruded bar of plastic magnet with circumferentially multipolar magnetization
10/06/1987US4698281 Garnet-type magnetic material high faraday rotation magnetic film containing such a material and process for the production thereof
10/06/1987US4698273 Alternate layers of iron and ferromagnetic iron compounds
10/06/1987US4697752 Coil winding machine
09/1987
09/30/1987EP0239140A2 Process for producing structured epitaxial films on a substrate
09/29/1987US4696725 Magnetic core and preparation thereof
09/29/1987US4696100 Method of manufacturing a chip coil
09/29/1987CA1227452A1 Perpendicular magnetic recording medium and fabrication
09/29/1987CA1227326A1 Process for making a transformer, transformer thus made, and wheel for winding it coils
09/24/1987WO1987005743A1 A wound transformer core and method of manufacturing same
09/23/1987CN87100530A Permanent magnet made from the rare-earth with very low coercive force transition metal, boron alloy
09/22/1987US4694999 Toroidal winding apparatus
09/22/1987US4694868 Apparatus for manufacturing a disc-shaped curved magnet coil
09/16/1987EP0113783B1 Winding method and winding apparatus therefor
09/16/1987CN87100199A Coil assembly and support system for transformer, transformer employing same and method for manufacture thereof
09/15/1987US4693001 Apparatus for air gapping the armature in a compound spool valve
09/09/1987EP0236213A1 Automatic process for making coils without supporting frame and for mounting them on a printed circuit, and machine for carrying out the process
09/09/1987EP0235809A2 Superconducting dipole electromagnets and process for producing the same
09/08/1987US4691872 For winding a wire through a hole of an object
09/02/1987EP0234476A1 Permanent magnet and process for producing the same
09/01/1987US4690726 Liquid phase epitaxial growth of bismuth-containing garnet films
09/01/1987US4690346 Tape winding machine
08/1987
08/27/1987WO1987005147A1 Electrical component with inductive and capacitive properties
08/25/1987US4689594 Multi-layer chip coil
08/25/1987US4689590 Demagnetization apparatus for magnetic markers used with electromagnetic article surveillance systems
08/25/1987US4688733 Toroidal core winding apparatus
08/20/1987DE3604784A1 Method and device for producing sections of a metal foil
08/18/1987US4687898 Method of fusing wire to a terminal
08/18/1987US4687608 Composite permanent magnet for magnetic excitation and method of producing the same
08/12/1987EP0232197A1 Method of making an inductive chip-component
08/12/1987EP0231620A2 Permanent magnet manufacture from very low coercivity crystalline rare earth-transition metal-boron alloy
08/12/1987CN86201059U Low-power factor mutual-inductor
08/11/1987US4686347 Method for welding amorphous wound cores
08/06/1987DE3603473A1 Method and device for producing magnetic annular cores (toroidal cores)
08/04/1987US4684438 Process for producing a coil for a magnetic recording head
08/04/1987US4683919 Apparatus and method for fabricating a high voltage winding for a toroidal transformer
07/1987
07/30/1987WO1987004559A1 Method of manufacturing toroidal coils
07/28/1987US4683012 Magnetic thin film
07/28/1987US4682486 Amorphous alloy toroids
07/21/1987US4680857 Winding method
07/21/1987CA1224548A1 Method of making an electrical transformer
07/15/1987CN86106790A Ferro-silicon-aluminium magnetic film and its manufacturing method and laminated film magnetic head
07/08/1987EP0228352A2 Process for obtaining layers of different magnetic anisotropy properties in epitaxial films of magnetic garnets
07/07/1987US4679020 Superconducting solenoid and method of making same
07/07/1987US4678634 Method for the preparation of an anisotropic sintered permanent magnet
07/07/1987US4678616 Method of producing permanent magnet
07/07/1987US4677743 Winding method
07/01/1987CN86108881A Method and apparatus for dipping articles in the varnish
06/1987
06/30/1987US4677036 Multilayer-magnetic cores between dielectrics
06/25/1987DE3544974A1 Electromagnet with plug connection
06/23/1987US4675639 Transformer assembly and winding therefor
06/23/1987US4675239 Perpendicular magnetization film
06/18/1987WO1987003738A1 Amorphous metal transformer core and coil assembly and method of manufacturaing same
06/16/1987US4673482 Sputtering apparatus
06/10/1987EP0225316A1 Method and apparatus for winding wedge-shaped segments for an electrical coil of an electrical transformer
06/09/1987US4672348 Electrical coil assembly and terminal therefor