| Patent Number |
Title Of Patent |
Date Issued |
| 7415757 |
Method for manufacturing inductor having coil embedded dust core |
August 26, 2008 |
| A method for manufacturing a coil-embedded dust core with a small variation in inductance value with efficiency includes a step (a) of charging soft magnetic metal powder including an insulating material, composing a green body 10, so as to cover a coil 1, and (b) compacting the soft |
| 7235208 |
Dust core |
June 26, 2007 |
| A dust core consists essentially of ferromagnetic powder; and an insulating binder, in which the ferromagnetic powder is dispersed; wherein the insulating binder is a silicone resin comprising a trifunctional alkyl-phenyl silicone resin and optionally containing an inorganic insulato |
| 6940388 |
Dust core |
September 6, 2005 |
| A dust core consists essentially of ferromagnetic powder; and an insulating binder, in which the ferromagnetic powder is dispersed; wherein the insulating binder is a silicone resin comprising a trifunctional alkyl-phenyl silicone resin and optionally containing an inorganic insulato |
| 6940387 |
Coil-embedded dust core and method for manufacturing the same |
September 6, 2005 |
| A coil-embedded dust core and a method for manufacturing the coil-embedded dust core are provided. The coil-embedded dust core comprises a coil formed from a flat conductor wound in a coil configuration, and a green body consisting of insulating material-coated ferromagnetic metal pa |
| 6882261 |
Coil-embedded dust core and method for manufacturing the same, and coil and method for manufactu |
April 19, 2005 |
| There are provided a coil-embedded dust core that provides high inductance and a method for manufacturing the same. The coil-embedded dust core includes a coil 1 formed by winding a flat conductor 2 and a green body 10 comprising of ferromagnetic metal powder coated with an insulating |
| 6791445 |
Coil-embedded dust core and method for manufacturing the same |
September 14, 2004 |
| A coil-embedded dust core and a method for manufacturing the coil-embedded dust core are provided. The coil-embedded dust core comprises a coil formed from a flat conductor wound in a coil configuration, and a green body consisting of insulating material-coated ferromagnetic metal pa |
| 6759935 |
Coil-embedded dust core production process, and coil-embedded dust core formed by the production |
July 6, 2004 |
| The invention provides a process for producing a coil-embedded dust core by embedding a coil in magnetic powders comprising ferromagnetic metal particles coated with an insulating material. At the first compression molding step one portion of magnetic powders is filled in a molding die |
| 6527823 |
Powder for dust cores and dust core |
March 4, 2003 |
| To provide a powder for dust cores capable of improving magnetic properties such as magnetic permeability in a molded compacted powder magnetic core and mechanical properties such as size precision of the molded compacted powder magnetic core and radial crushing strength and, a dust core |
| 6149704 |
Ferromagnetic powder for dust cores, dust core, and dust core fabrication process |
November 21, 2000 |
| 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 lubricant comprises at least one compound selected from the group consisting of magnesium st |
| 6102980 |
Dust core, ferromagnetic powder composition therefor, and method of making |
August 15, 2000 |
| 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 molded and desirably annealed into a dust core which exhibits a high magnetic flux density, lo |
| 5651841 |
Powder magnetic core |
July 29, 1997 |
| A powder magnetic core having reduced core losses and increased mechanical strength is provided at low costs. The core is obtained by compressing a ferromagnetic metal powder and an insulating agent and then annealing the compressed body. The ferromagnetic metal powder is made up of a |
| 5348800 |
Composite soft magnetic material |
September 20, 1994 |
| A composite soft magnetic material is produced from soft magnetic metal (e.g., Sendust) particles by coating the particles with a non-magnetic metal oxide (e.g., .alpha.-alumina) in a mechano-fusion manner, or heat treating the particles to form a diffusion layer of .alpha.-alumina t |
| 5229219 |
Magnetic recording medium comprising a magnetic layer containing a specified magnetic ferrite po |
July 20, 1993 |
| According to the invention, a magnetic recording medium is formed by using magnetic powder having a composition of the following formula:wherein Me is at least on element selected from the group consisting of Ba, Sr, Pb, and Ca,preferably the number of those particles having a particle size |
| 5227235 |
Composite soft magnetic material and coated particles therefor |
July 13, 1993 |
| The invention provides a composite soft magnetic material which is prepared by coating soft magnetic metal particles with a high resistance soft magnetic substance, preferably by mechano-fusion, applying electricity to the coated particles in a mold cavity between punches serving as |
| 4882224 |
Magnetic particles, method for making and electromagnetic clutch using same |
November 21, 1989 |
| Magnetic particles comprising a magnetic core and a shell covering the core are provided wherein the shell is formed from titanium nitride, titanium carbide, aluminum nitride, aluminum oxide, zirconium oxide, silicon nitride, silicon carbide, or a mixture thereof by plasma-assisted chemi |
