| 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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| 09/29/1981 | US4291558 Process of rolling iron-silicon strip material |
| 09/29/1981 | CA1109772A1 Process of producing an electrically insulative glass film on silicon steel |
| 09/22/1981 | US4290827 Annealing, tempering in magnetic cross-field |
| 09/22/1981 | US4290826 Process for the production of cobalt-rare earth alloy powders |
| 09/22/1981 | US4290799 Ferromagnetic metal pigment essentially consisting of iron and a process for its production |
| 09/16/1981 | EP0035644A1 Magnetic amorphous metal alloys |
| 09/16/1981 | EP0035633A1 Method of coating magnetic particles |
| 09/15/1981 | US4289722 Method of potting magnetic speed pickups |
| 09/15/1981 | US4289549 Alloy of cobalt, rare earth element, copper, iron, and at least one other metal |
| 09/09/1981 | EP0035037A1 Microcrystalline thin strip for magnetic material having high magnetic permeability |
| 09/08/1981 | US4288492 Silicates or borates dispersed in curable polymeric coating |
| 09/08/1981 | US4288260 Method of heat treatments of amorphous alloy ribbons |
| 09/01/1981 | CA1107988A1 Nonmagnetic alloy steel having improved machinability |
| 08/25/1981 | US4285894 Mn-Zn single crystalline ferrite head and a method of making the same |
| 08/25/1981 | US4285819 Functional magnetic microspheres |
| 08/25/1981 | CA1107537A1 Permanent magnet and process for producing the same |
| 08/19/1981 | EP0034058A1 Method of making permanent magnet of Mn-Al-C alloy |
| 08/19/1981 | EP0033878A2 Method for treating an electromagnetic steel sheet by laser-beam irradiation |
| 08/18/1981 | US4284441 Method for improvement of magnetic property of thin strip of amorphous alloy |
| 08/18/1981 | US4284440 Rare earth metal-cobalt permanent magnet alloy |
| 08/18/1981 | CA1107057A1 Water based selectable charge magnetic inks |
| 08/11/1981 | US4283438 By dispersing in oil, mixing in an aqueous solution and applying an alternating magnetic field |
| 08/11/1981 | CA1106926A1 Reactor |
| 08/11/1981 | CA1106648A1 Permanent-magnet alloy |
| 08/11/1981 | CA1106569A1 Method of manufacturing plastic-bonded (lnco) magnets |
| 08/04/1981 | US4282302 Ferrite powder type magnetic toner used in electrophotography and process for producing the same |
| 08/04/1981 | US4282046 Method of making permanent magnets and product |
| 07/28/1981 | US4280918 Magnetic particle dispersions |
| 07/28/1981 | US4280856 Antimony and selenium or sulfur added as crystal growth inhibitors |
| 07/22/1981 | EP0032180A2 Amorphous magnetic alloy containing at least Co and Ti |
| 07/21/1981 | US4279763 Process of preparing ferrite powders |
| 07/21/1981 | US4279668 Cobalt, chromium and iron |
| 07/15/1981 | EP0032125A2 Magnetic toner and method of developing magnetic images |
| 07/14/1981 | US4278556 Pulverizing ferrite in lower alcohol |
| 07/08/1981 | EP0031322A1 High sensitivity magneto-inductance varying proportionally with the value of the magnetic field |
| 07/07/1981 | US4277530 Instantaneous bonding of two sheets without creating stresses |
| 07/07/1981 | US4277356 Soft lithium-titanium-zinc ferrite |
| 06/30/1981 | US4276097 Method of treating Sm2 Co17 -based permanent magnet alloys |
| 06/30/1981 | EP0015293A4 Method and apparatus for producing hollow microspheres. |
| 06/23/1981 | US4275114 Magnetic recording medium and method of stabilization of chromium dioxide magnetic pigments |
| 06/23/1981 | US4274888 Magnetic cores |
| 06/23/1981 | US4274865 Production of magnetic powder |
| 06/23/1981 | CA1103567A1 Method of producing non-oriented silicon steel sheets having an excellent electromagnetic property |
| 06/16/1981 | US4273807 Acicular α-iron particles and recording media employing same |
| 06/16/1981 | US4273595 Method of preparing thermomagnetically treated magnetically anisotropic objects |
| 06/10/1981 | EP0030170A1 Process for the production of polycrystalline garnet |
| 06/09/1981 | US4272749 Reactor core of insulated iron powder |
| 06/09/1981 | US4272600 Magnetic toners containing cubical magnetite |
| 06/09/1981 | US4272285 Process for producing magnetic metal powders |
| 06/03/1981 | EP0029687A1 Process for stabilizing ferromagnetic chromium dioxide |
| 06/02/1981 | US4271441 Integral shield and bias element for magnetic tape cassettes |
| 05/27/1981 | EP0029071A1 Process for producing permanent magnet alloy |
| 05/26/1981 | US4269634 Loss reduction in oriented iron-base alloys containing sulfur |
| 05/20/1981 | EP0028963A1 Process for producing polycrystalline garnet comprising aluminium and/or gallium and/or indium and at least one element of the group constituted by the rare earths and yttrium, polycrystalline garnet thus obtained |
| 05/20/1981 | EP0028796A2 Coated magnetic metal or alloy pigments, process for their production, and their use |
| 05/19/1981 | US4268430 Ferrite composition having higher initial permeability and process for preparing molding product therefrom |
| 05/19/1981 | US4268326 Two-stage decarburization, specific water and hydrogen partial pressures |
| 05/19/1981 | US4268325 Annealing by heat treatment in magnetic field |
| 05/19/1981 | US4268302 Method of producing acicular metal crystals |
| 05/12/1981 | US4267207 Process for producing cobalt-containing ferromagnetic iron oxide powder |
| 05/12/1981 | US4267065 Said slurry being a misture of metal oxides capable of forming a ferrite |
| 05/12/1981 | CA1100788A1 Iron-phosphorus powder for manufacture of soft magnetic components |
| 05/05/1981 | US4265684 Magnetic core comprised of low-retentivity amorphous alloy |
| 05/05/1981 | US4265683 Development of grain-oriented iron sheet for electrical apparatus |
| 05/05/1981 | US4265682 High silicon steel thin strips and a method for producing the same |
| 05/05/1981 | US4265681 Silicon-iron alloy sheet, glass coating, dielectric, compression molding, annealing |
| 04/29/1981 | EP0027640A1 Process for producing ferromagnetic chromium dioxide, and its use in producing magnetic recording carriers |
| 04/28/1981 | US4264939 Magnetic erasing head |
| 04/28/1981 | US4264361 Heat-resistant composite magnet and method for producing the same |
| 04/28/1981 | US4264356 Corrosion resistance |
| 04/28/1981 | CA1099884A1 Process for producing soft magnetic material |
| 04/21/1981 | US4263523 Pulse generator using read head with Wiegand wire |
| 04/21/1981 | US4263044 Iron/chromium/cobalt-base spinodal decomposition-type magnetic alloy |
| 04/21/1981 | US4263011 Crystallization process |
| 04/15/1981 | EP0026871A1 Core for electromagnetic induction device |
| 04/14/1981 | US4262233 Inductors, transformers, magnetometers; stress relieving by heat treatment |
| 04/14/1981 | US4262037 Method of producing ferromagnetic metal powder |
| 04/14/1981 | CA1099406A1 Reducing magnetic hysteresis losses in thin tapes of soft magnetic amorphous metal alloys |
| 04/02/1981 | WO1981000861A1 Amorphous alloys |
| 03/31/1981 | US4259413 Composite stainless steel boron-containing article |
| 03/31/1981 | US4259368 Manufacture of acicular magnetic iron oxide |
| 03/31/1981 | US4259197 Process of preparing ferrite powders |
| 03/31/1981 | US4259109 Beryllium-containing iron-boron glassy magnetic alloys |
| 03/31/1981 | CA1098426A1 Electromagnetic silicon steel from thin castings |
| 03/25/1981 | EP0025596A1 Pulse generator using read head with Wiegand wire |
| 03/24/1981 | US4258234 Made from an alloy of iron, chromium, and cobalt, and a second alloy of iron and aluminum |
| 03/24/1981 | US4257830 Method of manufacturing a thin ribbon of magnetic material |
| 03/17/1981 | US4256484 Reduction of iron oxide precoated with antimony compound promoter, stabilization |
| 03/11/1981 | EP0024694A2 Process for preparing ferromagnetic acicular iron particles, and their use |
| 03/11/1981 | EP0024693A2 Process for the preparation of acicular ferrimagnetic iron oxide, and its application |
| 03/11/1981 | EP0024692A2 Process for preparing acicular ferromagnetic iron particles, and their use |
| 03/11/1981 | EP0024686A2 Article comprising a magnetic component consisting essentially of an alloy comprising Fe, Cr and Co |
| 03/10/1981 | US4255409 Oxidizing a ferrous compound with an alkali metal chlorate |
| 03/10/1981 | US4255215 Oriented low-alloy iron containing critical amounts of silicon and chromium |
| 03/10/1981 | US4255205 Method of producing grain-oriented silicon steel sheets having substantially no glass film |
| 03/10/1981 | CA1097057A1 Cobalt-doped acicular hyper-magnetite particles |
| 03/05/1981 | WO1981000643A1 Magnetic alloys containing fe-cr-co |
| 03/03/1981 | US4253886 Corrosion resistant ferromagnetic metal powders and method of preparing the same |
| 03/03/1981 | US4253883 Fe-Cr-Co Permanent magnet alloy and alloy processing |
| 02/24/1981 | CA1096437A1 Plastic bonded permanent magnet and method of making same |