| Patents for H01F 1 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties (23,146) |
|---|
| 03/27/1990 | US4911855 Copolymer of acrylic ester and sulfonated acrylamide |
| 03/22/1990 | WO1990002604A1 Moldable microcapsule with high percentage solid and method of manufacture |
| 03/21/1990 | EP0359511A2 Method of magnetic particle treatment and resulting recording media |
| 03/21/1990 | EP0359510A2 Magnetic particle coating compositions and recording media |
| 03/21/1990 | CN1007240B Preparation of ferromagnetic chromium dioxide |
| 03/20/1990 | US4909865 Preimpregnating with organic solvent; heating while passing oxygen containing gas |
| 03/20/1990 | US4909864 Forming insulative coating of a phosphate and colloidal silica; annealing with electron beam |
| 03/20/1990 | CA1266769A2 Magnetic particles for use in separations |
| 03/13/1990 | US4908164 Procedure for the production of magnetic plastic laminate |
| 03/13/1990 | US4908076 Magnet prepared by alloying constituents, casting, comminuting, sintering; high coercive force |
| 03/07/1990 | EP0356998A2 Impact dot print head |
| 03/07/1990 | EP0356915A2 Feromagnetic organic substance having triaryl methane structure and process for manufacturing the same |
| 03/07/1990 | CN1007099B High energy ball grinding method for mfg. permanent magnet of rare earth-transition metal-boron |
| 03/06/1990 | US4906382 Method of magnetizing nonmagnetic materials |
| 02/28/1990 | EP0356131A1 Sintered bodies and production process thereof |
| 02/28/1990 | EP0355755A2 Chromium dioxide material, process for its preparation and magnetic recording material containing this chromium dioxide material |
| 02/28/1990 | EP0355741A2 Highly oriented permanent magnet and process for producing the same |
| 02/28/1990 | CN1040061A Reduction-fusion process for the preparation rare earth ferroboron |
| 02/27/1990 | US4904530 Ferrite particles; high information density |
| 02/27/1990 | US4904527 Lamination for use in transformers or the like and method of making the same |
| 02/27/1990 | US4904315 Method for improving magnesium oxide steel coatings using non-aqueous solvents |
| 02/27/1990 | US4904314 Method of refining magnetic domains of barrier-coated electrical steels using metallic contaminants |
| 02/27/1990 | US4904313 Method of producing stable magnetic domain refinement of electrical steels by metallic contaminants |
| 02/22/1990 | WO1990001779A1 Plastic-bonded magnet |
| 02/21/1990 | EP0354929A1 Inductor insert compositions and methods |
| 02/21/1990 | CN1039926A Method and apparatus for making flakes of re-fe-b-type magnetically-aligned material |
| 02/21/1990 | CN1039925A Heavy colour hollow globular shape magnet powder and making method |
| 02/21/1990 | CN1039924A Light colour hollow globular shape magnet powder and making method |
| 02/21/1990 | CN1039832A Oxidation resistant compositions for use with rare earth magnets |
| 02/20/1990 | US4902361 Permanent epoxy bonded isotropic magnets of neodymium, praseodymium, boron and iron alloy, high density and performance |
| 02/20/1990 | US4902360 Permanent magnet alloy for elevated temperature applications |
| 02/20/1990 | US4902357 Containing rare earth elements |
| 02/14/1990 | EP0354398A2 Iron-based acicular alloy powder, process for its production and its use |
| 02/13/1990 | US4900804 Aromatic polyesters, polyesteramides, and compositions thereof |
| 02/13/1990 | US4900465 Process for preparing magnetic carbon black |
| 02/13/1990 | US4900374 Demagnetization of iron-neodymium-boron type permanent magnets without loss of coercivity |
| 02/13/1990 | CA1265671A1 Epoxy bonded rare earth-iron magnets |
| 02/07/1990 | EP0354131A2 Ferrite particle plating system and electromagnetic shielding |
| 02/07/1990 | EP0353627A2 Interdispersed two-phase ferrite composite |
| 02/07/1990 | CN1039502A Radial direction orientation nd-fe-b permanent magnet ring and the preparation method thereof |
| 02/07/1990 | CN1006744B Method for producing superhuge anisotropy rare earth permanent magnet |
| 02/06/1990 | US4898628 Hot working method for producing grain oriented silicon steel with improved glass film formation |
| 02/06/1990 | US4898625 Mixing magnetic intermetallic powder and rapidly quenched alloy powder, sintering |
| 02/06/1990 | US4898613 Gadolinium, terbium, dysprosium, holmium, erbium, thulium, and/or ytterbium; inexpensive |
| 02/06/1990 | CA1265360A1 Amorphous soft magnetic thin film |
| 02/01/1990 | DE3825358A1 Magnetic material and method for producing it |
| 01/30/1990 | US4897283 Samarium-cobalt alloy |
| 01/30/1990 | US4897131 Grain-oriented electrical steel sheet having improved glass film properties and low watt loss |
| 01/30/1990 | US4897130 Magnetic material comprising an intermetallic compound of the rare earth transition metal type |
| 01/24/1990 | EP0351940A2 Composite sintered ceramic material |
| 01/24/1990 | EP0351775A1 Manufacturing process of magnetic strontiumhexaferrite powder |
| 01/23/1990 | US4895607 Iron-neodymium-boron permanent magnet alloys prepared by consolidation of amorphous powders |
| 01/17/1990 | EP0351051A1 Fe-based soft magnetic alloy |
| 01/17/1990 | EP0350967A2 Resin-bonded magnet and its production |
| 01/17/1990 | EP0350800A2 Method for preparing a magnetic powder material and for preparing a resin bonded magnet |
| 01/17/1990 | EP0350781A2 Magnetic powder material and resin-bonded type magnet |
| 01/16/1990 | US4894097 Rare earth type magnet and a method for producing the same |
| 01/16/1990 | US4893793 Apparatus for the manufacture of a thermostable amorphous ferromagnetic powder |
| 01/10/1990 | EP0350241A2 Method of producing material having an anisotropic microstructure |
| 01/10/1990 | EP0350101A1 Monocrystalline MnZn-ferroferrite material having a high content of Zn, and a magnetic head manufactured from said material |
| 01/09/1990 | US4892596 Extrusion rare earth-transition metal alloy an oxygen getter |
| 01/03/1990 | EP0348952A2 Method for manufacturing steel article having high magnetic permeability and low coercive force |
| 01/03/1990 | EP0348557A1 Soft magnetic stainless steel having good cold forgeability |
| 01/03/1990 | CN1038542A Permanent magnet with low temp. coefficient |
| 01/03/1990 | CN1006341B Premagnetization method of premanent-magnet alloy and its product |
| 01/02/1990 | US4891078 Rare earth-containing magnets |
| 12/28/1989 | WO1989012902A1 Method of producing permanent magnet |
| 12/28/1989 | WO1989012887A1 Process for treating metal particles against corrosion and the particles thereby obtained |
| 12/27/1989 | EP0348038A2 Manufacturing method of a permanent magnet |
| 12/27/1989 | CA1264064A1 Magnetising apparatus for the magnetisation of keys and rotors of magnetic safety lock systems |
| 12/26/1989 | US4889568 Annealing iron, boron, silicon alloy in absence of magnetic field |
| 12/20/1989 | EP0346368A1 Polymetallic molecular systems with ferromagnetic properties |
| 12/19/1989 | US4888512 Surface multipolar rare earth-iron-boron rotor magnet and method of making |
| 12/19/1989 | US4888068 Rare earth elements, iron, cobalt, boron alloy; sintering, annealing, controlled heating and cooling |
| 12/14/1989 | WO1989012113A1 SINTERED RARE EARTH ELEMENT-B-Fe-MAGNET AND PROCESS FOR ITS PRODUCTION |
| 12/14/1989 | WO1989012112A1 SINTERED MAGNETIC Fe-Co MATERIAL AND PROCESS FOR ITS PRODUCTION |
| 12/14/1989 | DE3917502A1 Process for preparing microcrystalline barium ferrite platelets |
| 12/13/1989 | EP0345936A1 Method of refining magnetic domains of electrical steels |
| 12/13/1989 | EP0240529B1 Compositions of particulate magnetic oxides with a structure of the lacunar spinel type, preparation and application thereof |
| 12/13/1989 | CN1037992A Ba-ferrite rubber-plastic mmagnetic powder and its manufacture |
| 12/12/1989 | US4886714 Platelike magnetic powder and a recording medium which uses the platelike magnetic powder |
| 12/06/1989 | EP0345092A1 A method for producing a corrosion resistant rare earth- containing magnet |
| 12/06/1989 | EP0344838A2 Composite materials suitable for magnetic and electronic shielding as well as for permanent magnets |
| 12/06/1989 | EP0344542A2 An Nd-Fe-B sintered magnet and method for producing the same |
| 11/29/1989 | EP0344018A2 Rare earth permanent magnet |
| 11/29/1989 | EP0343957A2 A surface-treated magnetic powder and a moldable permanent magnet composition containing the same |
| 11/29/1989 | EP0343934A2 Magnetically attractable particles and method of preparation |
| 11/29/1989 | EP0343283A2 Iron oxide for ferrite |
| 11/29/1989 | CN1005919B Reduction-fusion process for preparation of rare-earth fe-mn alloy |
| 11/28/1989 | US4882834 Forming a laminate by applying pressure to remove excess sealing liquid between facing surfaces laminations |
| 11/28/1989 | CA1263435A1 Magnetic material having high permeability in the high frequency range |
| 11/23/1989 | EP0342923A2 Fe-based soft magnetic alloy |
| 11/23/1989 | EP0342922A2 Fe-based soft magnetic alloy and dust core made therefrom |
| 11/23/1989 | EP0342921A2 Fe-based soft magnetic alloy |
| 11/23/1989 | EP0342296A1 Forming and sintering a powder mixture containing Al or Cu |
| 11/21/1989 | US4882224 Magnetic particles, method for making and electromagnetic clutch using same |
| 11/21/1989 | US4881989 Fe-base soft magnetic alloy and method of producing same |
| 11/21/1989 | US4881986 Method for producing a rare earth metal-iron-boron anisotropic sintered magnet from rapidly-quenched rare earth metal-iron-boron alloy ribbon-like flakes |
| 11/21/1989 | US4881985 Method for producing anisotropic RE-FE-B type magnetically aligned material |
| 11/21/1989 | US4881984 Radial orientation and compaction by heating an evacuated and sealed container charged with gas-atomized particles of a rare earth metal/fe/b/ alloy |