| 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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| 05/14/1991 | US5015093 Electromagnet for an atomic absorption spectrometer |
| 05/08/1991 | EP0151185B1 Tin-containing iron powder and process for its production |
| 05/08/1991 | CN1051265A Magnetic material for use in bulgar alarm system |
| 05/07/1991 | US5013471 Chemically adsorbing chlorosilane surfactant on ferromagnetic particles, dispersing particles in oil |
| 05/07/1991 | US5013411 Surface coated with electroplated nickel layer |
| 05/07/1991 | US5013374 Permanent domain refinement by aluminum deposition |
| 05/07/1991 | US5013373 Method for treating electrical steel by electroetching and electrical steel having permanent domain refinement |
| 05/07/1991 | US5013372 Semi-process non-oriented electromagnetic steel strip having low core loss and high magnetic permeability, and method of making |
| 05/02/1991 | WO1991005807A1 Organic magnetic composite |
| 05/02/1991 | EP0425469A2 Permanent magnet (material) and production process |
| 05/02/1991 | EP0424411A1 Process for treating metal particles against corrosion and the particles thereby obtained |
| 05/01/1991 | CN1012477B Rare earth-iron-boron magnet powder and process of producing same |
| 04/30/1991 | US5011553 Iron-rich metallic glasses having high saturation induction and superior soft ferromagnetic properties |
| 04/30/1991 | US5011552 Method for producing a rare earth metal-iron-boron permanent magnet by use of a rapidly-quenched alloy powder |
| 04/23/1991 | US5009877 Stabilization of acicular ferromagnetic chromium dioxide |
| 04/23/1991 | US5009706 Flat crystal grains of neodymium, praseodymium and/or rare earth elements, boron, copper and iron |
| 04/17/1991 | EP0422755A1 Plate-like maghemite particles and process of producing the same |
| 04/16/1991 | US5007972 Controlling grain size by sequence of steps of heat treatment and compaction |
| 04/13/1991 | WO1991006107A1 Corrosion-resistant, rare earth-transition metal magnet and method of production thereof |
| 04/10/1991 | EP0421488A2 Permanent magnet with good thermal stability |
| 04/10/1991 | EP0421249A1 High viscosity magnetic fluids |
| 04/10/1991 | EP0421213A2 Chromium containing magnetic iron oxide pigments process for their fabrication and their application |
| 04/10/1991 | EP0421207A2 Magnetic recording medium |
| 04/10/1991 | EP0421189A1 Process for the preparation of finely divided pulverised hexagonal ferrite and its use in the preparation of magnetic recording media |
| 04/10/1991 | EP0420962A1 Manufacture of dimensionally precise pieces by sintering. |
| 04/10/1991 | CN1050641A Method for increasing magnetic performance of strontium ferrite by adding primary element in twice |
| 04/09/1991 | US5006164 Starting material for injection molding of metal powder |
| 04/04/1991 | WO1991004810A1 Ball milling apparatus and method, and production of metallic amorphous materials |
| 04/04/1991 | DE3931936A1 Prodn. of rare earth-transition metal magnetic material - by rapidly solidifying master alloy and heat treating |
| 04/04/1991 | CA2066740A1 Ball milling apparatus and method, and production of metallic amorphous materials |
| 04/03/1991 | EP0420699A2 Ferromagnetic member consiting of organic material |
| 04/03/1991 | EP0420238A2 Process for preparing unidirectional silicon steel sheet having high magnetic flux density |
| 04/02/1991 | US5004499 Rare earth-iron-boron compositions for polymer-bonded magnets |
| 04/02/1991 | US5003919 Apparatus for stabilization treatment of ferromagnetic metal powder |
| 03/27/1991 | EP0419124A1 Stator assembly for an alternating current generator |
| 03/27/1991 | EP0419098A1 Cobalt-iron magnetostrictive alloys, and their use in products |
| 03/27/1991 | EP0418808A2 Magnetic dispersions of rare earth magnetic particles with high magnetic energy product in flexible highly saturated nitrile rubber and methods of processing the same |
| 03/27/1991 | EP0418807A2 Magnetic dispersions of ferrite particles with high magnetic energy product in flexible highly saturated nitrile rubber and methods of producing the same |
| 03/27/1991 | EP0418424A1 High strength non-oriented electrical steel sheet and method of manufacturing same |
| 03/27/1991 | CN1050282A Magnetic material containing rare earth element, iron, nitrogen, hydrogen and oxygen |
| 03/27/1991 | CN1012235B Process for manufacturing permanent magnet |
| 03/26/1991 | US5002751 Highly-coercive isometric iron oxides, a process for the production and the use thereof |
| 03/26/1991 | US5002728 Method of manufacturing soft magnetic Fe-Si alloy sintered product |
| 03/26/1991 | US5002727 composite magnetic compacts and their forming methods |
| 03/26/1991 | US5002677 Mixing a polymer blend and ferritic magnetic particles, shaping, orienting and curing |
| 03/26/1991 | US5002619 Method of producing Fe-Ni series alloys having improved effect for restraining streaks during etching |
| 03/21/1991 | WO1991003823A1 Permanent magnet |
| 03/20/1991 | EP0418023A2 Cobalt-based magnet free of rare earths |
| 03/20/1991 | EP0417733A2 Magnetic material containing rare earth element, iron, nitrogen, hydrogen and oxygen |
| 03/20/1991 | CN1050109A Production of amorphous constant-permeability core |
| 03/20/1991 | CN1050108A Production of amorphous inductor core |
| 03/20/1991 | CA2025584A1 Flexible high energy magnetic blend compositions based on ferrite particles in highly saturated nitrile rubber and methods of processing the same |
| 03/20/1991 | CA2025576A1 Flexible high energy magnetic blend compositions based on rare earth magnetic particles in highly saturated nitrile rubber and methods of processing the same |
| 03/19/1991 | US5001331 System for establishing production history |
| 03/19/1991 | US5000800 Permanent magnet and method for producing the same |
| 03/19/1991 | US5000796 Anisotropic high energy magnets and a process of preparing the same |
| 03/19/1991 | CA1281560C Fine amorphous metallic wires |
| 03/14/1991 | DE4026796A1 Anisotropic permanent magnet with good temp. resistant properties - made of alloy of iron-cobalt-boron- rare earth |
| 03/14/1991 | DE3928389A1 Permanentmagnet Permanent magnet |
| 03/14/1991 | CA2019392A1 Cobalt-based magnet free of rare earths |
| 03/13/1991 | EP0416595A2 Process for making Nd-Fe-B type magnets utilizing a hydrogen and oxygen treatment |
| 03/13/1991 | EP0416420A2 Magnesium oxide coating for electrical steels and the method of coating |
| 03/13/1991 | EP0416403A1 Magnetic iron-oxide pigment, production method and application |
| 03/13/1991 | EP0416098A1 Magnetically anisotropic sintered magnets. |
| 03/13/1991 | EP0202339B1 Method of manufacturing unidirectional electromagnetic steel plates of low iron loss |
| 03/07/1991 | WO1991002828A1 Insulation coating composition for electric sheet and method of insulation coating of electric sheet |
| 03/07/1991 | WO1991002823A1 Production method of unidirectional electromagnetic steel sheet having excellent iron loss and high flux density |
| 03/06/1991 | EP0415678A2 Poly(phenylene sulfide ketone) ferromagnetic substance |
| 03/06/1991 | EP0414974A1 Thin soft magnetic alloy strip |
| 03/06/1991 | EP0414724A1 Ferromagnetic materials. |
| 03/05/1991 | CA2024553A1 Soft-magnetic nickel-iron-chromium alloy |
| 03/01/1991 | CA2023781A1 Poly(phenylene sulfide ketone) ferromagnetic substance |
| 02/28/1991 | DE4019635A1 Resistance heat treating of a ferromagnetic amorphous strip - using alternating or pulsed current with direct current magnetic field to improve magnetic properties |
| 02/27/1991 | EP0414645A1 Permanent magnet alloy having improved resistance to oxidation and process for production thereof |
| 02/27/1991 | EP0414537A2 Organic ferromagnetic substance |
| 02/27/1991 | EP0414376A2 Method for the preparation of a rare earth-iron-boron permanent magnet |
| 02/27/1991 | EP0328534B1 A process for the preparation of magnetic hexaferrite particles, particles obtained and products containing them |
| 02/26/1991 | US4996023 Method of manufacturing a permanent magnet |
| 02/26/1991 | US4995999 Method of producing magnetic carbon black |
| 02/26/1991 | US4995905 Permanent magnet having improved heat-treatment characteristics and method for producing the same |
| 02/23/1991 | WO1991002811A1 Resuspendable coated magnetic particles and stable magnetic particle suspensions |
| 02/19/1991 | US4994109 Method for producing permanent magnet alloy particles for use in producing bonded permanent magnets |
| 02/19/1991 | CA1280275C Process for densifying a ceramic part |
| 02/13/1991 | CN1049142A High-fineness magnetic iron oxide made by by-product ferrous iron salt |
| 02/12/1991 | US4992329 Magnetic-shielding sheet |
| 02/12/1991 | US4992234 Method for the preparation of rare earth-base permanent magnet |
| 02/12/1991 | US4992191 Containing silicon; heat resistant magnetic toners |
| 02/12/1991 | US4992190 Useful as the dampening fluid in shock absorbers and clutches |
| 02/12/1991 | CA1280014C Process for producing the rare earth alloy powders |
| 02/12/1991 | CA1280013C Isotropic magnets and process for producing same |
| 02/12/1991 | CA1280012C Permanent magnets |
| 02/07/1991 | WO1991001562A1 Anisotropic plastic-bonded magnet |
| 02/07/1991 | WO1991001388A1 Iron-rich metallic glasses having high saturation induction and superior soft ferromagnetic properties |
| 02/06/1991 | EP0411649A2 Organic polymer ferromagnetic material and process for preparing polymer |
| 02/06/1991 | EP0411591A2 Cold accumulating material and method of manufacturing the same |
| 02/06/1991 | EP0411571A2 Rare earth permanent magnet powder, method for producing same and bonded magnet |
| 02/05/1991 | US4990307 Method for producing particles for the production of permanent magnets |
| 02/05/1991 | US4990306 Molding an alloy of neodyum, iron and boron with other metals compacting, and sintering |
| 02/05/1991 | US4990276 Contains magnetic particle and dispersing agents in dialkyl ester of phthalic acid media |
| 02/05/1991 | US4990197 Heat treatment of rapidly quenched Fe-6.5 wt % Si ribbon |