Patents
Patents for H01F 41 - Apparatus or processes specially adapted for manufacturing or assembling the devices covered by this subclass (27,155)
05/1984
05/23/1984EP0108921A1 Toroidal magnetic strip wound core with air gap and method of making such a core
05/22/1984US4450186 Method and device for manufacturing magnetic recording medium
05/22/1984US4449293 Coil winding and inserting machine
05/22/1984US4449291 Method of making a multiple layer coil winding system
05/16/1984EP0108343A1 Method of automatically winding miniature toroidal coils, and device for carrying out the method
05/15/1984US4449111 Transformer
05/15/1984US4448054 Coil winding apparatus
05/15/1984US4447990 Machine for finishing ferrite magnetic pot cores
05/10/1984WO1984001854A1 Adjustable air gap ferrite structures and methods of manufacture
05/10/1984WO1984001853A1 Tunable-inductance magnetically-soft ferrite core structures and methods of manufacture
05/10/1984WO1984001852A1 Inductance tuning means and methods of manufacture
05/09/1984EP0107802A2 Method of manufacturing a resin encapsulated wire or foil type coil, and winding material employed in this method
05/08/1984US4446816 Apparatus for manufacturing a magnetic recording medium
05/02/1984EP0106856A1 Casing, particularly for transformers, and method for manufacturing the casing.
05/01/1984US4446170 Method of manufacturing a magnetic recording film of a thin metallic film type
05/01/1984CA1166709A1 Transformer
04/1984
04/24/1984US4444550 Permanent magnet mold apparatus for injection molding plastic bonded magnets
04/18/1984EP0105426A1 Coil winding device
04/17/1984US4443294 Process for forming magnetic film pattern
04/10/1984US4441940 Method for producing toroidal tape cores for fault current safety switches and use of such cores
04/10/1984US4441875 Mold apparatus for forming article under influence of magnetic field
04/10/1984US4441874 Apparatus for differential expansion volume compaction
04/10/1984CA1165150A1 Rolled core
04/10/1984CA1165110A1 Magnetic recording medium manufacturing device
04/04/1984EP0104792A1 Method of making an ignition coil core
04/03/1984US4440609 Method of electrodepositing a low coercine force, corrosion-resistant alloy of nickel, iron and boron
04/03/1984CA1164636A1 Termination strips for stick wound coils
03/1984
03/27/1984US4439294 Reactive ion etching of soft-magnetic substrates
03/27/1984US4439255 Coating with dispersion of inorganic material in binder and heating
03/27/1984CA1164283A1 Magnetic recording medium and process for production thereof
03/21/1984EP0103237A2 Method of making resin-encapsulated coils for transformers
03/21/1984EP0103223A2 Method and apparatus for winding wires
03/20/1984US4438508 Rare-earth metal and transition metal alloy layer
03/20/1984US4438066 Zero to low magnetostriction, high coercivity, polycrystalline, Co-Pt magnetic recording media
03/13/1984CA1163673A1 Method and device for multipolar magnetisation of a strip material
03/13/1984CA1163538A1 Holder for liquid phase epitaxial growth
03/07/1984EP0102261A1 Method of obtaining a coil with a closed magnetic circuit and a permanent magnet for the ignition of combustion engines
03/07/1984EP0101826A1 Method of forming a magnetic layer on a substrate
03/06/1984US4434945 Winding apparatus
03/06/1984CA1163293A1 Apparatus and method of drying a transformer
02/1984
02/28/1984US4433474 For electromagnetic devices
02/14/1984CA1162113A1 Process for producing magnetic recording medium
02/08/1984EP0100054A2 Magnetic recording medium
01/1984
01/31/1984US4429007 Coating with slurry of glass, fillers, and binder in solvent, and heating
01/31/1984US4428540 Apparatus for maintaining the relative position between wire being fed onto a bobbin and wire wound about the bobbin for forming a coil of wire
01/24/1984US4427740 Covering a conductive member with porous cycloaliphatic epoxy resin, silicon carbide and curing agent, vacuum pressure impregnation with resin, and heating
01/17/1984US4426265 Cobalt-iron-chromium alloy
01/10/1984US4424939 Apparatus for winding wire around toroidal core
01/05/1984WO1984000077A1 Winding method and winding apparatus therefor
01/04/1984EP0097205A1 Method of winding coils, and coil-winding apparatus
01/03/1984US4424580 Method and apparatus for generating electron spin reversal in ferrimagnetic material
01/03/1984US4424271 Release agent, thin film magnetic tape heads
12/1983
12/28/1983EP0096809A1 A magnetic circuit or part of a magnetic circuit and a method for preparation thereof
12/21/1983EP0096516A1 Multi-turn inductor and LC network and method of construction thereof
12/21/1983EP0096058A1 Electric transformer and method for making it.
12/20/1983US4420876 Method of coil assembly for hot melt induction heater apparatus
12/13/1983US4419814 Method of making a bobbin construction for autotransformer ballast
12/08/1983WO1983004341A1 A winding machine comprising a wire catching member for the provision of tappings
12/06/1983US4419381 Plasma
12/06/1983CA1158145A1 Electrical steel lamination
11/1983
11/29/1983US4418241 Insulated coil
11/29/1983US4417701 Method and means for controlling the manufacture of windings for inductive apparatus
11/29/1983US4417699 Apparatus for winding a wire or thread on C-shaped cores
11/29/1983CA1157635A1 Method of manufacturing a pernament magnet which is to be arranged in an air gap of a transformer core
11/22/1983US4416056 Process for preparation of film coils
11/16/1983EP0093931A1 Leakage current release with a wound coil, process for winding the coil and device for carrying out the process
11/16/1983EP0093838A2 Perpendicular magnetic recording medium and method for producing the same
11/15/1983US4415990 Complementary bi-level magnetic bubble propagation circuit
11/15/1983CA1156964A1 Electroplating nickel-iron alloy on complex shape substrate using low density current
11/10/1983WO1983003921A1 Method for manufacturing a casing, particularly for transformers
11/08/1983US4414554 Magnetic imaging apparatus
11/08/1983US4414523 Encapsulated magnet for magnetic drive
11/08/1983US4414287 Magnetic recording medium and its manufacture
11/08/1983US4413406 Processing amorphous metal into packets by bonding with low melting point material
11/01/1983US4412929 Iron oxide particles and glue
11/01/1983US4412507 Magnetic recording medium manufacturing device
10/1983
10/27/1983WO1983003711A1 Metal oxide patterns with planar surface
10/26/1983EP0092423A2 Method for making permanent magnets of Mn-Al-C alloys
10/26/1983EP0092422A2 Permanent Mn-Al-C alloy magnets and method for making same
10/25/1983US4412201 Coil form and assembly for automated manufacturing operations
10/25/1983US4411757 Formation of electrodes for magnetoresistive sensor
10/19/1983EP0091818A2 Process for the production of a metal oxide patterns with planar surface
10/18/1983US4410565 Method of making a magnetic recording medium
10/18/1983US4410406 Cobalt-nickel-phosphorus alloy
10/18/1983CA1155276A1 Device for adjusting the inductance of a coil
10/11/1983US4408875 Method of projecting circuit patterns
10/11/1983US4408726 Orthocyclic coil winding machine
10/04/1983US4407894 Flexible magnetic tape
10/04/1983US4407859 Multi-level conductor patter<ns
09/1983
09/28/1983EP0089609A2 Magnetic recording medium and method of manufacturing a magnetic recording medium
09/27/1983US4406056 Method of making a cellulose-free transformer coil
09/27/1983CA1154532A1 Magneto-optical memory element
09/27/1983CA1154507A1 Method of introducing a magnetic core into a coil
09/21/1983EP0088869A2 Thin film techniques for fabricating narrow track ferrite heads
09/20/1983US4405912 Solenoid assembly and method of making same
09/20/1983US4405677 Diffusion or etching of grain boundary layer to enhance particle separation
09/20/1983US4405436 Magnetic pole shields and target of same ferromagnetic material
09/20/1983US4404740 Method for mounting a winding in a transformer
09/14/1983EP0088663A1 Focusing solenoid, its application and manufacturing process
09/13/1983US4404233 Ion implanting method