| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 252620620 | With Group II metal or lead | 13 |
| 20090184282 | NANOPARTICLE NICKEL ZINC FERRITES SYNTHESIZED USING REVERSE MICELLES - A method for making monodispersed magnetic nanoparticles of nickel zinc ferrite (NZFO) at room temperature by mixing together two micelle solutions. The first micelle solution comprises zinc, nickel, and iron metal salts; a surfactant; and a hydrocarbon. The second micelle solution comprises and aqueous hydroxide, a surfactant, and a hydrocarbon. After mixing the two micelle solutions, the ferrite precipitates. | 07-23-2009 |
| 20100078587 | NiMnZn-BASED FERRITE - A novel NiMnZn-based ferrite which can reduce magnetic loss (core loss) at a high frequency of about 2 MHz or higher and achieve higher saturated magnetic flux density while forming high sintered density is provided. The NiMnZn-based ferrite contains a main component comprising 54.0 to 57.5 mol % of iron oxide in terms of Fe | 04-01-2010 |
| 20130256585 | METHOD OF FORMING FERRITE THIN FILM AND FERRITE THIN FILM OBTAINED USING THE SAME - A method of forming a ferrite thin film by carrying out a process for forming a coated film by coating a ferrite thin film-forming composition on a heat-resistant substrate and a process for calcining the coated film once or a plurality of times so that the thickness of the calcined film on the substrate becomes a desired thickness, and firing the calcined film formed on the substrate, in which the conditions for firing the calcined film formed on the substrate are under the atmosphere or an oxygen gas or inert gas atmosphere, a temperature-rise rate of 1° C./minute to 50° C./minute, a holding temperature of 500° C. to 800° C., and a holding time of 30 minutes to 120 minutes. | 10-03-2013 |
| 20140054491 | FERRITE PARTICLE AND PRODUCTION METHOD THEREOF - A ferrite powder according to the present invention includes a laminar structure exhibiting a state where W-type ferrite phases are laminated in an easy direction of magnetization, the W-type ferrite phases including a compound expressed by AM | 02-27-2014 |
| 20150028251 | NI-ZN-CU-BASED FERRITE PARTICLES, GREEN SHEET COMPRISING THE NI-ZN-CU-BASED FERRITE PARTICLES AND NI-ZN-CU-BASED FERRITE SINTERED CERAMICS - An object of the present invention is to provide a ferrite material that is excellent in temperature characteristic and DC superimposition characteristic. The present invention relates to Ni—Zn—Cu-based ferrite particles comprising 70 to 95% by weight of an Ni—Zn—Cu ferrite having a specific composition, 1 to 20% by weight of nickel oxide, 0 to 20% by weight of zinc oxide and 1 to 10% by weight of copper oxide, and a ferrite sintered ceramics obtained by sintering the ferrite particles. | 01-29-2015 |
| 20220135423 | METHODS AND APPARATUS FOR SYNTHESIS AND MAGNETOPHORETIC FRACTIONIZATION SIZE-SELECTION OF MAGNETIC NANOPARTICLES FROM A SOLUTION - Methods and apparatus for producing a magnetic nanoparticle suitable for additive manufacturing techniques includes providing a solution having a plurality of metallic precursors to produce magnetic nanoparticles, a coordinating solvent, and a chelating agent. The solution is mixed and heated to grow nanoparticles wherein magnetic nanoparticles are formed. The solution is then cooled and a magnetic field is applied to the solution wherein ferrite nanoparticles are at least partially separated by size. | 05-05-2022 |
| 252620630 | Calcium, barium, strontium, or lead | 7 |
| 20080210899 | Magnetic Core - Ceramic Shell Nanocrystals and Manufacturing Method Thereof - Provided are magnetic core-ceramic shell (e.g., magnetite (Fe | 09-04-2008 |
| 20110024672 | Oxide-Type, Magnetic Material and it's Production Method, and Sintered Ferrite Magnet and it's Production Method - A sintered ferrite magnet having an M-type ferrite structure and comprising Ca, an R element which is at least one rare earth element indispensably including La, Ba, Fe and Co as indispensable elements, which is represented by Ca | 02-03-2011 |
| 20120080638 | MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDING-USE MAGNETIC POWDER AND METHOD OF PREPARING THE SAME - An aspect of the present invention relates to a magnetic recording medium comprising a magnetic layer comprising ferromagnetic powder and a binder, wherein the ferromagnetic powder is magnetic powder comprised of gathering magnetic particles, the magnetic particles are a reduction product of hexagonal ferrite magnetic particles wherein a ratio Dc/Dtem of a crystallite size Dc obtained from a diffraction peak of a (220) plane to a particle diameter Dtem in a direction perpendicular to a (220) plane as determined by a transmission electron microscope ranges from 0.90 to 0.75. | 04-05-2012 |
| 20120199782 | HEXAGONAL CRYSTAL FERRITE MAGNETIC POWDER FOR MAGNETIC RECORDING, METHOD FOR PRODUCING THE SAME, AND MAGNETIC RECORDING MEDIUM USING THE POWDER - A hexagonal crystal ferrite magnetic powder having high magnetic characteristics while having a small particle volume and a high specific surface area is provided, and a high-density magnetic recording medium using the powder. A method for producing a hexagonal crystal ferrite formed using a glass crystallization method includes the steps of: mixing a glass matrix with raw materials including iron, bismuth, a divalent metal (M1), a tetravalent metal (M2), any one kind (A) of barium, strontium, calcium, and lead, and at least one kind of rare earth element (represented by R) having a mole equal to or less than that of the iron; heating the mixed raw material to obtain a glass body; quenching the glass body, pulverizing the glass body, and performing a heat treatment, and washing the glass body after the heat treatment with an acid solution. | 08-09-2012 |
| 20140151595 | METHOD OF MANUFACTURING HEXAGONAL FERRITE MAGNETIC PARTICLES, METHOD OF MANUFACTURING MAGNETIC COATING MATERIAL, AND METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM - The method of manufacturing hexagonal ferrite magnetic particles includes providing hexagonal ferrite magnetic particles by conducting calcination of particles comprising an iron salt and an alkaline earth metal salt to cause ferritization; and further includes preparing the particles comprising an iron salt and an alkaline earth metal salt by adhering a glass component, followed by the alkaline earth metal salt, to the iron salt; and conducting calcination of the particles prepared to form a calcined product in which hexagonal ferrite is detected as a principal component in X-ray diffraction analysis. | 06-05-2014 |
| 20150123026 | MAGNETIC POWDER FOR MAGNETIC RECORDING MEDIUM - Provided is magnetic powder capable of enhancing simultaneously both magnetic characteristics including SNP and durability of a magnetic recording medium. The hexagonal ferrite magnetic powder for a magnetic recording medium has a Ba/Fe molar ratio of 8.0% or more, a Bi/Fe molar ratio of 2.5% or more and an Al/Fe molar ratio of from 3.0 to 6.0%. The magnetic powder preferably has an activation volume Vact of from 1,400 to 1,800 nm | 05-07-2015 |
| 20160118168 | INCORPORATION OF OXIDES INTO FERRITE MATERIAL FOR IMPROVED RADIO RADIOFREQUENCY PROPERTIES - Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material and methods of manufacturing. The hexagonal ferrite material can be Y-phase hexagonal ferrite material, such as those including strontium. In some embodiments, oxides consistent with the stoichiometry of Sr | 04-28-2016 |
