Patents
Patents for H01F 1 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties (23,146)
10/1988
10/06/1988DE3709852A1 Stable magnetic fluid compositions and processes for their preparation and their use
10/05/1988EP0285579A2 Procedure for the production of magnetic plastic laminate and magnetic laminate obtained through said procedure
10/05/1988EP0284832A1 Manufacturing process for an anisotropic magnetic material based on Fe, B and a rare-earth metal
10/04/1988CA1242625A1 Directional solidification of bi/mnbi compositions
09/1988
09/29/1988DE3806657A1 Ferrofluid compositions
09/29/1988DE3709138A1 Process for producing a magnetic material from pulverulent starting components
09/28/1988EP0284033A1 A method for producing a rare earth metal-iron-boron anisotropic bonded magnet from rapidly-quenched rare earth metal-iron-boron alloy ribbon-like flakes
09/27/1988US4774265 Process for preparing magnetic polymer particles
09/27/1988US4774072 Iron(iii) salts in alkaline suspension
09/27/1988US4773950 Permanent magnet
09/27/1988US4773948 Hot rolling, coiling, annealing
09/27/1988US4773938 Finely divided isometric hexaferrite pigments with a W-structure, processes for their preparation and their use
09/27/1988US4773931 Spindle ferromagnetic alloy particles
09/27/1988CA1242314A1 Process for controlling ferrous iron content in manganese zinc ferrite
09/20/1988US4772341 Low loss electrical steel strip
09/20/1988US4772338 Process and apparatus for improvement of iron loss of electromagnetic steel sheet or amorphous material
09/20/1988CA1242101A1 Magnetic carrier powder
09/13/1988US4770903 Ferric oxide core with a cobalt ferrite shell
09/13/1988US4770723 Cobalt free, mechanical strength
09/13/1988US4770720 Annealing, coating with dielectric, grooves
09/13/1988US4770702 With iron and boron, magnetic
09/07/1988WO1988006797A1 Rare earth element-iron base permanent magnet and process for its production
09/07/1988EP0281295A2 Process and composition for producing bonded magnet
09/06/1988US4769293 Magnetic recording medium and production thereof
09/06/1988US4769212 Process for producing metallic sintered parts
09/06/1988US4769166 Expandable magnetic sealant
09/06/1988US4769165 Process for synthesis of ferromagnetic chromium dioxide
09/06/1988US4769091 Amorphous metal alloy
09/06/1988US4769089 Method of annealing an aperture shadow mask for a color cathode ray tube
09/06/1988US4769063 Method for producing rare earth alloy
09/06/1988CA1241556A1 Tin-containing ferrous composite powder and method of producing same and tin-containing sintered magnetic material
09/06/1988CA1241507A1 Barium or chromium additives to magnesium oxide coating slurry
08/1988
08/31/1988EP0280372A1 Improved method for the manufacture of rare earth transition metal alloy magnets
08/30/1988US4767474 Alloy of iron(with cobalt), boron and rare earth elements
08/30/1988US4767469 Electrical discharge scribing for improving core loss of grain-oriented silicon steel
08/30/1988US4767450 Process for producing the rare earth alloy powders
08/25/1988WO1988006154A1 Polymetallic molecular systems with ferromagnetic properties
08/25/1988DE3803538A1 Process for the production of a resin-bound magnet containing a ferromagnetic material and a resin mixture
08/24/1988EP0279195A1 Process for synthesis of ferromagnetic chromium dioxide
08/23/1988US4765848 Permanent magnent and method for producing same
08/17/1988EP0278783A1 Process for stabilization treatment of ferromagnetic metal powders
08/17/1988EP0278743A1 Magnetic carbon black, process for preparing the same, and method of modifying magnetic carbon black
08/17/1988EP0278342A2 Use of a material as a hard magnetic material
08/16/1988US4764429 Finely, divided, spherical, two-layer solid particles
08/16/1988US4764300 Preparation of finely divided and acicular hexagonal ferrites and their use for the production of magnetic recording media and plastoferrites
08/10/1988EP0277416A2 Permanent magnet alloy for elevated temperature applications
08/10/1988EP0277245A1 Process for producing complex oxide to be used for producing ferrite
08/10/1988EP0277243A1 Process for forming insulating film on electrical sheet
08/09/1988US4762755 Ferromagnetic material and a magnetic head using the same material
08/09/1988US4762753 Insulative coating composition
08/09/1988US4762677 Alloying
08/09/1988US4762575 Crystallization, annealing
08/09/1988US4762574 With rare earth oxide
08/03/1988EP0276765A2 Solid matter for the preparation of hexagonal ferrite
08/02/1988US4760966 Method of comminuting rare earth magnet alloys into fine particles
08/02/1988CA1239812A1 Tin-containing iron base powder and process for making
07/1988
07/28/1988WO1988005337A1 Process for preparation of monodispersed barium containing ferrites
07/27/1988CN86101368B Ni-fe surpermagnetic alloy for single pole pulse
07/26/1988US4759949 Method of insulating ferromagnetic amorphous metal continuous strip
07/19/1988USRE32714 Method of producing high performance permanent magnets
07/19/1988US4758275 Magnetic fine particle, organic dispersion medium and surfactant
07/13/1988EP0274034A2 Anisotropic magnetic powder, magnet thereof and method of producing same
07/12/1988US4756933 Sheet steel contacted with resin-containing and fluoride-containing liquor
07/06/1988EP0273440A2 Magnetic recording medium
07/05/1988US4755395 Preparation of acicular cobalt-containing ferrimagnetic iron oxides
07/05/1988US4755315 Preparation of cobalt-containing isotropic magnetic iron oxides
07/05/1988US4755239 Low magnetostriction amorphous metal alloys
06/1988
06/29/1988EP0272867A2 Method for improving magnesium oxide steel coatings
06/28/1988US4753822 Heating magnesium alcoholate and decomposing to magnesium oxide
06/28/1988US4753692 Hot rolling, annealing cold rolling steel sheet containing copper and tin
06/28/1988US4753687 Easy removal of excess from silicon steels after high temperature annealing
06/28/1988US4753675 Method of preparing a magnetic material
06/22/1988EP0271929A2 Aromatic polyesters, polyesteramides, and compositions thereof
06/22/1988EP0271657A2 Fe-base soft magnetic alloy and method of producing same
06/21/1988US4752407 Autoclauing iron, cobalt, barium titanium compounds with alkali metal hydroxide
06/16/1988WO1988004464A1 Rare earth-cobalt based magnetic material and permanent magnet
06/15/1988EP0270934A1 A method for producing a rare earth metal-iron-boron anisotropic sintered magnet from rapidly-quenched rare earth metal-iron-boron alloy ribbon-like flakes
06/14/1988US4751070 Low temperature synthesis
06/14/1988US4750951 Wear and corrosion resistance
06/14/1988US4750949 Grain-oriented electrical steel sheet having stable magnetic properties resistant to stress-relief annealing, and method and apparatus for producing the same
06/14/1988CA1237965A1 Process for producing sm.sub.2co in17 xx alloy suitable for use as permanent magnets
06/07/1988US4749506 Fine particle substance-containing microgel dispersions
06/02/1988WO1988004098A1 A method for producing a rare earth metal-iron-boron anisotropic sintered magnet from rapidly-quenched rare earth metal-iron-boron alloy ribbon-like flakes
05/1988
05/31/1988US4748017 Method for manufacturing lepidocrocite
05/31/1988US4747888 Amorphous soft magnetic thin film
05/31/1988US4747874 Rare earth-iron-boron permanent magnets with enhanced coercivity
05/24/1988US4746378 Solid solution heat treatment
05/19/1988WO1988003699A1 Near-zero magnetostrictive glassy metal alloys for high frequency applications
05/17/1988US4744838 Method of continuously processing amorphous metal punchings
05/11/1988EP0267122A1 Process for producing a composition, in particular a ferromagnetic liquid crystal, liquid crystal obtained by the process and device using this liquid crystal
05/11/1988DE3637521A1 Permanent magnet and process for producing it
05/10/1988US4743466 Magnetic tape particles, bis (triphenylphosphoranylidene) ammonium salt
05/10/1988US4743313 Amorphous alloy for use in magnetic heads
05/10/1988US4743311 Alloys, lasers, milling, diffusion, magnetism, compaction, deformation
05/10/1988CA1236381A1 Iron-rare earth-boron permanent magnets by hot working
05/05/1988WO1988003308A1 A process for the preparation of magnetic hexaferrite particles, particles obtained and products containing them
05/05/1988DE3729693A1 Process for preparing fine barium ferrite particles
05/04/1988EP0265966A2 Super paramagnetic fluids and methods of making super paramagnetic fluids
05/03/1988US4741895 Decomposition of ammonium dichromate
05/03/1988US4741850 Super paramagnetic fluids and methods of making super paramagnetic fluids