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6451220 |
High density magnetic recording compositions and processes thereof
A magnetic composition comprised of cobalt ferrite nanoparticles dispersed in an ionic exchange resin.
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6416830 |
Composite magnetic tube and method of producing the same, and electromagnetic interference suppressing tube
A tube for externally covering or bundling electric cables is provided for suppressing radiation of undesired electromagnetic waves. The tube is made of a material in which soft magnetic powder is...
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6416681 |
Granule for forming ferrite body, ferrite sintered product and production method thereof
Granule for forming ferrite is provided by mixing powders of ferrite raw material, polyvinyl alcohol as a binder and polyethylene glycol added as plasticizer and having molecular weight being 1000...
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6387293 |
Composition for rare earth bonded magnet use, rare earth bonded magnet and method for manufacturing rare earth bonded magnet
A composition for a rare earth bonded magnet, the rare earth bonded magnet and the method for manufacturing the rare earth bonded magnet are provided that produce little decline in mechanical...
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6387294 |
Rare earth resin magnet, magnet rotor, magnet motor using the same, and its manufacturing method
A magnet having a maximum energy product at 20° C. of 18 MGOe or more, and an extremely excellent magnetic performance is obtained. A magnet stable in the magnetic performance in practical...
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6383407 |
Bonded magnet, magnet roll, a ferrite powder used therefor and method for producing same
A ferrite powder for bonded magnets having a substantially magnetoplumbite-type crystal structure and an average diameter of 0.9-2 μm, the ferrite powder having a basic composition represented by...
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RE37666 |
Iron-based permanent magnets and their fabrication as well as iron-based permanent magnet alloy powders for permanent bonded magnets and iron-based bonded magnets
With the invention of establishing fabrication methods for cheaply produced (Fe,Co)—Cr—B—R-type bonded magnets or (Fe,Co)—Cr—B—R—M-type bonded magnets containing few rare earth...
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6352599 |
High performance iron-rare earth-boron-refractory-cobalt nanocomposite
Magnetic nanocomposite materials including iron, rare earth elements, boron, refractory metals and cobalt which have favorable magnetic properties and are suitable for making bonded magnets are...
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6342167 |
Synthetic resin magnet composition and synthetic resin magnet molded-product using the same
A synthetic resin magnet composition that can maintain its good melt flowability without deterioration in moldability or in uniformity of magnetic force even when the amount of magnetic powder...
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6337031 |
Flame-retardant resin magnet material
There is provided a resin magnet material that has excellent flame retardancy, produces only a small amount of toxic substances when ignited, and yields very few molding defects; as well as an...
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6332933 |
Iron-rare earth-boron-refractory metal magnetic nanocomposites
Magnetic nanocomposite materials including iron, rare earth elements, boron, refractory metal and, optionally, cobalt are disclosed. Neodymium and lanthanum are preferred rare earth elements. The...
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6312795 |
Magnetic sheet
A magnetic sheet of the present invention comprises: 400 to 1,900 parts by weight of at least one kind of magnetic particles selected from the group consisting of magnetoplumbite-structure...
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6290868 |
Field-structured material media and methods for synthesis thereof
The present application is directed to a new class of composite materials, called field-structured composite (FSC) materials, which comprise a oriented aggregate structure made of magnetic...
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6290851 |
Microorganisms-immobilized magnetic carriers, a process for producing the carriers and a method of treating wastewater
The present invention relates to magnetic carriers in which microorganisms requiring carriers for their growth in the step of treating wastewater have been immmobilized, a process for producing the...
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6284060 |
Magnetic core and method of manufacturing the same
A magnetic core of a compressed compact comprises a mixture of magnetic powder and a spacing material, wherein the distance between adjacent magnetic powder particles is controlled by the spacing...
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6277298 |
Ferrofluid composition and process
The invention relates to a composition and process for producing a chemically stable magnetic fluid comprising a plurality of magnetic particles covered first with a small molecular weight surface...
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6261387 |
Rare-earth iron-boron magnet containing cerium and lanthanum
Permanent rare-earth magnets containing Ce are fabricated with coercivity greater than 4 kOe. One composition for such magnets is [Ce y R 1 -y ] z (F 1 -v B v ) 1 -z, where R is one or more...
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6261471 |
Composition and method of making a ferrofluid having an improved chemical stability
The invention relates to a composition and a process for producing a magnetic fluid comprising finely divided magnetic particles covered with at least one surfactant. A fluorocarbon-silane surface...
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6258289 |
Method of producing coating composition for magnetic recording
In a method of producing a coating composition for magnetic recording, first, a magnetic layer forming material, or the like, containing ferromagnetic powder is put, together with a binder and an...
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6245253 |
Liquid composition and its use as magneto-rheological liquid
There are provided fluid compositions with particulate solid materials dispersed therein which are characterized by exceptionally low settling tendencies of the dispersed particles. Such...
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6228904 |
Nanostructured fillers and carriers
A nanocomposite structure comprising a nanostructured filler or carrier intimately mixed with a matrix, and methods of making such a structure. The nanostructured filler has a domain size...
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6221270 |
Process for producing compound for rare earth metal resin-bonded magnet
A process for producing a compound for a rare earth metal resin-bonded magnet includes: a slurry preparation step of mixing materials containing a magnetic alloy powder of a rare earth metal alloy,...
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6193903 |
Method of forming high-temperature magnetic articles and articles formed thereby
Ceramic-coated powdered ferromagnetic materials for forming magnetic articles, and which maintain the mechanical and magnetic properties of the articles at high temperatures, such as during...
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6190573 |
Extrusion-molded magnetic body comprising samarium-iron-nitrogen system magnetic particles
This invention is directed to an extrusion-molded magnet comprising a samarium-iron-nitrogen material, which is novel and capable of exhibiting excellent magnetic properties, i.e.,...
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6187217 |
Thin magnet alloy belt and resin bonded magnet
In order to secure stable magnetic properties in a magnet alloy ribbon obtained by a melt rapid cooling method, and obtain excellent magnetic properties and corrosion resistance in a bonded magnet,...
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6187439 |
Encapsulated magnetic pigments, processes for their preparation and their uses
Encapsulated particles, such as magnetic particles, colored pigments, or carbon black, with high chemical affinity for ink vehicles. The encapsulated particles of this invention are suitable for...
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6183658 |
Process for preparing agglomerate-free nanoscalar iron oxide particles with a hydrolysis resistant coating
A process for preparing an agglomerate-free suspension of nanosize iron-containing oxide particles coated in a stable manner comprises preparing an aqueous suspension of nanosize iron-containing...
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6183657 |
Core material for noise filter
In a core material for the noise filter, powders of a flat and soft magnetic material is dispersed and buried into an insulating material such as rubber or plastic.
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6174453 |
High-density ferrite member and ferrite beads composition therefor
Disclosed is a method for the preparation of a ferrite beads composition suitable for compression-molding into a compression-molded ferrite body to be subjected to a sintering heat treatment to...
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6171489 |
Polymer beads and method for preparation thereof
The present invention relates to a process for producing polymer beads incorporating solid particles and to the novel polymer beads per se. The invention provides a process for producing polymer...
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6165378 |
Polysaccharide derivative/magnetic metal oxide composite
The present invention provides a polysaccharide-magnetic metal oxide complex consisting of a polysaccharide derivative obtained by carboxyalkyl-etherifying and unsubstituted or substituted...
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6159396 |
Electrorheological magnetic fluid and process for producing the same
An electrorheological magnetic fluid including an electrically insulating liquid and fine particles dispersed therein is described, wherein the fine particles include a fine magnetic particle as a...
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6149704 |
Ferromagnetic powder for dust cores, dust core, and dust core fabrication process
A dust core ferromagnetic powder comprises a ferromagnetic metal powder, an insulating material, and a lubricant. The insulating material comprises a phenol resin and/or a silicone resin, and the...
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6143096 |
Process for producing alloy, alloy and alloy containing sheets made therefrom
A powdery alloy mainly composed of Mn--Bi having particle diameter of 5 μm or less which has a magnetic anisotropy of 6000 Oe or more in coercive force and 35 emu/g or more in saturation...
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6139765 |
Magnetic powder, permanent magnet produced therefrom and process for producing them
A magnetic powder and a permanent magnet are provided which have magnetic properties enhanced by magnetic interaction. Disclosed are a magnetic powder comprising a mixture of two or more powders...
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6132634 |
Bonded magnet-forming composition and magnet roller using the same
A bonded magnet featuring mechanical strength is obtained from a bonded magnet-forming composition comprising magnetic powder and a binder wherein the binder is based on highly crystalline...
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6102980 |
Dust core, ferromagnetic powder composition therefor, and method of making
A ferromagnetic powder composition for dust cores contains a ferromagnetic metal powder and 0.1-15% by volume based on the powder of titania sol and/or zirconia sol. The composition is pressure...
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6093486 |
Magnetic recording medium and magnetic paint therefor
Magnetic paint for producing a magnetic recording medium, the magnetic paint comprises at least ferromagnetic powder, binder, α-Fe 2 O 3 powder, and alumina powder. A relationship between an...
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6086780 |
Ordered structures in homogeneous magnetic fluid thin films and method of preparation
Methods for preparing homogeneous magnetic fluid compositions capable of forming ordered one dimensional structures or two dimensional lattices in response to externally applied magnetic fields are...
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6078237 |
Rare earth-based permanent magnet material and method for the preparation thereof
Disclosed is a rare earth-based, magnetically anisotropic permanent magnet material consisting of a rare earth element, e.g., neodymium or praseodymium, iron optional in combination with cobalt and...
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6068785 |
Method for manufacturing oil-based ferrofluid
A slurry is formed of particles of a non-magnetic oxide of iron (α-Fe 2 O 3 ), an oil carrier liquid and a surfactant. The slurry is then processed in an attrition mill where kinetic energy is...
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6063180 |
Use of free-flowing, magnetic iron oxide containing granules with 50 to 73 wt. % iron content
Magnetic iron oxide-containing granules for producing toners or inks, the granules comprising 95.0 to 99.8 wt. % of a magnetic iron oxide-containing compound and 0.2 to 5.0 wt. % of a binder,...
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6063303 |
Magnetic powder and magnetic molded article
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6056844 |
Temperature-controlled induction heating of polymeric materials
The present invention provides new polymer induction bonding technology. Induction heating technologies are utilized to weld, forge, bond or set polymer materials. The invention provides...
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6056889 |
Process for producing a magnetic fluid and composition therefor
The invention relates to a composition and a process for producing a chemically stable magnetic fluid comprising finely divided magnetic particles covered with surfactants. A surface modifier is...
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6051156 |
Compound magnetic material and electromagnetic interference suppressor
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6051630 |
Process for preparing a dispersion of hard particles in solvent
A process and a high pressure apparatus are disclosed which are useful in preparing magnetic dispersions and other dispersions of hard, non-compliant particulates. The apparatus can be monitored...
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6048920 |
Magnetic nanocomposite compositions and processes for the preparation and use thereof
A magnetic nanocomposite composition comprising from about 0.001 to about 60 weight percent of nanocrystalline particles of Fe 3 O 4 , and from about 40 to about 99.999 weight percent of a resin.
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6033782 |
Low volume lightweight magnetodielectric materials
A magnetodielectric composition is made of flakes of magnetic material dispersed in a binder at a concentration of about 30 to 60%. The flakes consist of a thin film of magnetic material or...
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6017667 |
Spherical-like composite particles and electrophotographic magnetic carrier
Spherical-like composite particles having an average particle size of 1 to 1,000 μm, a volume resistivity of 10 10 to 10 13 Ωcm and a coercive force of 100 to 4,000 Oe, comprising: ...
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