| Patents for H01F 1 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties (23,146) |
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| 02/05/1991 | US4990182 Used for high density magnetic recording |
| 02/05/1991 | CA1279777C Permanent magnet |
| 01/30/1991 | CN1011448B Ferromagnetic powder and method for producing the same |
| 01/29/1991 | US4988755 Passivated rare earth magnet or magnetic material compositions |
| 01/24/1991 | DE4023202A1 Defective ferrite spinel magnetic material - heat treated to optimise and stabilise magnetic or magneto=optical properties |
| 01/23/1991 | EP0409647A2 Manufacturing process for sintered Fe-P alloy product having soft magnetic characteristics |
| 01/23/1991 | EP0409385A1 Method for domain refinement of oriented silicon steel by low pressure abrasion scribing |
| 01/23/1991 | CN1048766A Proportioning and manufacturing method of iron-base rare-earth permanent-magnet alloy |
| 01/20/1991 | CA2020156A1 Method for domain refinement of oriented silicon steel by low pressure abrasion scribing |
| 01/16/1991 | EP0407608A1 Nickel-iron base magnetic alloy having high permeability |
| 01/16/1991 | CN1048554A Production of grain-oriented silicon steel sheets having insulating film formed thereon |
| 01/15/1991 | WO1991001563A1 Iron-rich metallic glasses having high saturation induction and superior soft ferromagnetic properties at high magnetization rates |
| 01/15/1991 | US4985635 Method of producing extra-low iron loss grain oriented silicon steel sheets |
| 01/15/1991 | US4985165 Material having a predeterminable magnetic susceptibility |
| 01/15/1991 | US4985089 Used in transformers, noise filters, chokes, iron |
| 01/15/1991 | US4985088 Fe-based soft magnetic alloy product |
| 01/15/1991 | US4985086 Neodymium, iron, boron |
| 01/15/1991 | US4985085 Method of making anisotropic magnets |
| 01/15/1991 | US4985073 Pigments |
| 01/15/1991 | US4985072 Rare earth element, compacts |
| 01/15/1991 | CA1278985C Grain-oriented silicon steel and stress coating therefor |
| 01/10/1991 | WO1991000602A1 Method for preparing permanent magnets based on neodymium-iron-boron |
| 01/10/1991 | DE4019822A1 HV pulse generating circuit - has magnetic pulse compression circuit with saturable main choke, and resetting circuit |
| 01/09/1991 | EP0406833A1 Production of grain-oriented silicon steel sheets having an insulating film formed thereon |
| 01/09/1991 | EP0406692A2 Fluid responsive to a magnetic field |
| 01/09/1991 | EP0406580A1 A composite material and a method for producing the same |
| 01/08/1991 | US4983232 Rare earth-boron-iron-gallium alloys |
| 01/08/1991 | US4983231 Iron and rare earth metal alloy coated with alkali modified silica |
| 01/08/1991 | US4983230 Boron, solidification, castings, heat treatment, microstructure |
| 01/08/1991 | US4983217 Neodymium-iron-boron; microemulsion; reacting compounds of neodymium, iron, boron in discontinuous phase |
| 01/02/1991 | EP0406004A2 Method of introducing magnetic anisotropy into magnetic material |
| 01/02/1991 | EP0405321A1 Magnet and method for manufacturing the same |
| 01/02/1991 | EP0405309A1 Highly coercive magnetic strip |
| 01/02/1991 | CN1048237A Iron-based soft magnetic material |
| 01/01/1991 | US4981635 Methods for producing a resin-bonded magnet |
| 01/01/1991 | US4981532 Rare earth-iron-boron magnet powder and process of producing same |
| 01/01/1991 | US4981513 Alloys |
| 12/27/1990 | WO1990016076A1 Iron base, soft magnetic steel material |
| 12/27/1990 | CA2019257A1 Magnet and method for manufacturing the same |
| 12/27/1990 | CA1278179C Electrophoretic method of producing high-density magnetic recording media and a composition and a suspension for practicing the same |
| 12/25/1990 | US4979997 Heating, cold rolling, hot rolling, decarburization, and annealing |
| 12/25/1990 | US4979996 Low temerpature heating, nitriding runnign strip |
| 12/19/1990 | EP0403180A2 Coated particulate metallic materials |
| 12/18/1990 | US4978398 Containing transition metal, rare earth element, yttrium, boron and organic additive |
| 12/18/1990 | CA2020464A1 Soft magnetic steel materials of iron base |
| 12/14/1990 | WO1990016075A1 Improved magnetic materials and process for producing the same |
| 12/14/1990 | CA2034496A1 Magnetic materials and process for producing the same |
| 12/13/1990 | WO1990015423A1 Superparamagnetic liquid colloids |
| 12/13/1990 | WO1990015365A1 Method for making magnetic particles use in electrostatography |
| 12/13/1990 | WO1990015364A1 Method for making colored magnetic particles and their use in electrostatographic toner compositions |
| 12/13/1990 | WO1990014911A1 Magnetic alloy compositions and permanent magnets |
| 12/13/1990 | CA2018768A1 Coated particulate metallic materials |
| 12/12/1990 | EP0401835A1 A magnetic material |
| 12/12/1990 | EP0401805A2 Magnetic core |
| 12/12/1990 | CN1047755A Hard magnetic material and magnet manufactured from such hard magnetic material |
| 12/12/1990 | CN1010818B Radiative orientation nd-fe-b permanent-magnet ring and its making method |
| 12/11/1990 | US4977386 Electric resistor producible in a wide range of specific resistance values, and relative manufacturing process |
| 12/11/1990 | US4976883 Process for preparing a magnetic fluid |
| 12/05/1990 | EP0401098A1 Hot rolled magnetic steel sheet |
| 12/05/1990 | EP0400716A1 Soft magnetic magnesium-manganese-zinc-ferrite material and products thereof |
| 12/05/1990 | EP0400550A2 Soft magnetic alloy, method for making, magnetic core, magnetic shield and compressed powder core using the same |
| 12/05/1990 | EP0400549A2 Process for producing grainoriented electrical steel sheet having superior magnetic and surface film characteristics |
| 12/05/1990 | EP0400500A2 A method and apparatus managing tasks |
| 12/05/1990 | EP0400263A1 New class of magnetic materials for solid state devices |
| 12/04/1990 | US4975214 Magnetic iron oxide containing silicon element and process for producing same |
| 12/04/1990 | US4975213 Resin-bonded rare earth-iron-boron magnet |
| 12/04/1990 | US4975130 Rare earth element, boron and iron or cobalt |
| 12/04/1990 | US4975129 Permanent magnet |
| 12/04/1990 | CA1277159C Isotropic permanent magnets and process for producing same |
| 11/30/1990 | CA2017616A1 Magnetic alloy compositions and permanent magnets |
| 11/29/1990 | WO1990014672A1 Superparamagnetic fluids and methods of making superparamagnetic fluids |
| 11/29/1990 | CA2017608A1 Method and apparatus for managing tasks |
| 11/28/1990 | EP0399665A1 Method of manufacturing ferrite crystals and method of producing ferrite powders preferably used therefor |
| 11/27/1990 | US4973415 Epoxy or silicon resin binder |
| 11/27/1990 | CA1276761C Bicomponent ceramic fibers |
| 11/22/1990 | EP0397885A1 Magnetic powder, its production method, magnetic recording medium and magnetic recording method |
| 11/20/1990 | US4972285 Cobalt, niobium, zirconium magnetic head, v-shaped magnetic films, bonding to glass |
| 11/20/1990 | US4971637 Rare earth permanent magnet |
| 11/20/1990 | CA1276486C Method of making rare-earth element containing permanent magnets |
| 11/14/1990 | EP0397264A1 Hard magnetic material and magnet manufactured from such hard magnetic material |
| 11/14/1990 | EP0396880A1 NdFeB magnet and surface passivation process of NdFeB magnets |
| 11/13/1990 | US4969963 Soft magnetic stainless steel having good cold forgeability |
| 11/13/1990 | US4969961 Sm-Fe-V magnet alloy and method of making same |
| 11/07/1990 | EP0396235A2 Method for producing permanent magnet alloy particles for use in producing bonded permanent magnets |
| 11/07/1990 | EP0395705A1 Epoxy bonded rare earth-iron-boron magnets and method of making same |
| 11/06/1990 | US4968361 Method of domain refinement of oriented silicon steel by using flux-printing |
| 11/06/1990 | US4968347 Rare earth-ferromagnetic metal alloy particles coated with sintering alloy |
| 11/06/1990 | CA1275782C Process for producing acicular particles containing an iron carbide |
| 11/05/1990 | CA2014191A1 Method for producing permanent/magnet alloy particles for use in producing bonded permanent magnets |
| 10/31/1990 | EP0395625A2 Process of Manufacturing a Permanent Magnet or Permanent Magnet Material |
| 10/31/1990 | EP0394696A1 Method of producing grain oriented electrical steel sheet having high magnetic flux density |
| 10/31/1990 | EP0394586A1 Plate-like composite ferrite fine particles for magnetic recording and a process for producing the same |
| 10/31/1990 | EP0394395A1 Moldable microcapsule with high percentage solid and method of manufacture |
| 10/30/1990 | US4966668 Method for the treatment of metal objects |
| 10/30/1990 | US4966633 Coercivity in hot worked iron-neodymium boron type permanent magnets |
| 10/24/1990 | EP0394034A2 Magnetic iron oxide particles |
| 10/24/1990 | EP0394020A2 Ferrite particles and ferrite resin composite for bonded magnetic core and process for their production |
| 10/24/1990 | EP0393563A2 Acicular cobalt-modified iron oxide and process for its manufacture |
| 10/23/1990 | US4965007 Magnetite in hardened gelatin |
| 10/23/1990 | US4964922 Forming transverse parellel spaced stripes |