H01F 1/11

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Class  H01F : MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES


Subclass 1/11: Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties (thin magnetic films characterised by their composition H01F 10/1) of inorganic materials (H01F 1/44 takes precedence) characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites in the form of particles

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
12246475 Ferrite particles for bonded magnets, resin composition for bonded magnets, and molded product using the sameOct 13, 23Mar 11, 25Toda Kogyo Corp.
12243668 Ferrite sintered magnet, ferrite particles, bonded magnet, and rotating electrical machineMar 27, 20Mar 04, 25TDK Corporation
12198841 Magnetic powder, manufacturing method of magnetic powder, and magnetic recording mediumSep 13, 21Jan 14, 25FUJIFILM Corporation
12183493 Ferrite sintered magnet, ferrite particles, bonded magnet, motor, and generatorMay 19, 23Dec 31, 24TDK Corporation
12160984 Radio wave absorberNov 04, 21Dec 03, 24FUJIFILM Corporation
12002606 Ferrite core and coil component comprising sameJan 28, 19Jun 04, 24LG INNOTEK CO., LTD.
11976010 Composite hexagonal ferrite materialsFeb 16, 23May 07, 24Allumax TTI, LLC
11926782 Magnetizable abrasive particle and method of making the sameOct 12, 20Mar 12, 243M Innovative Property Company
11894171 Magnetic powder for magnetic recording mediumNov 14, 19Feb 06, 24Dowa Electronics Materials Co. Ltd.; FUJIFILM Corporation;
11859271 Iron nitride compositionsMay 04, 18Jan 02, 24Regents of the University of Minnesota
11848130 Strong non rare earth permanent magnets from double doped magnetic nanoparticlesAug 22, 19Dec 19, 23Nano Theranostics
11830533 Method of producing magnetic powder and method of producing magnetic recording mediumMar 27, 19Nov 28, 23Sony Corporation
11820055 Ferrite particles for bonded magnets, resin composition for bonded magnets, and molded product using the sameApr 01, 14Nov 21, 23Toda Kogyo Corp.
11823823 Ferrite particles for bonded magnets, resin composition for bonded magnets, and molded product using the sameNov 10, 22Nov 21, 23Toda Kogyo Corporation
11810699 Ferrite sintered magnet, ferrite particles, bonded magnet, motor, and generatorDec 22, 17Nov 07, 23TDK Corporation
11776720 Calcined ferrite, and sintered ferrite magnet and its production methodApr 20, 22Oct 03, 23PROTERIAL, LTD.
11691892 Z-type hexaferrite having a nanocrystalline structureFeb 03, 21Jul 04, 23Rogers Corporation
11676749 Co-shelling of magnetic nanoparticles and quantum dots with oxide materialJun 17, 21Jun 13, 23Osram Opto Semiconductors GmbH
11657935 Iron oxide magnetic powder and manufacturing method thereforJul 17, 19May 23, 23KOREA INSTITUTE OF MATERIALS SCIENCE
11610705 Ferrite sintered magnet and rotating electric machine comprising the sameMar 19, 20Mar 21, 23TDK Corporation

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2024/0331,903 HETEROGENEOUS CORE-TYPE MAGNETIC COUPLING DEVICEJun 29, 22Oct 03, 24Not available
2024/0177,896 FERRITE SINTERED MAGNET AND MANUFACTURING METHOD THEREFORMar 24, 22May 30, 24501 TDK Corporation
2024/0076,764 IRON NITRIDE COMPOSITIONSNov 10, 23Mar 07, 24Not available
2023/0377,784 Enhanced Magnetic Properties Through Alignment of Non-Magnetic ConstituentsOct 13, 21Nov 23, 23Not available
2022/0375,663 IRON-BASED OXIDE MAGNETIC POWDER AND METHOD FOR PRODUCING SAMESep 29, 20Nov 24, 22Not available
2021/0323,873 COMPOSITE HEXAGONAL FERRITE MATERIALSMar 31, 21Oct 21, 21Not available
2021/0304,930 CALCINED FERRITE, AND SINTERED FERRITE MAGNET AND ITS PRODUCTION METHODFeb 09, 21Sep 30, 21Hitachi Metals LTD
2021/0241,950 IRON OXIDE MAGNETIC POWDER AND MANUFACTURING METHOD THEREFORJul 17, 19Aug 05, 21Not available
2020/0312,493 FERRITE SINTERED MAGNET AND ROTATING ELECTRIC MACHINE COMPRISING THE SAMEMar 19, 20Oct 01, 20TDK Corporation
2020/0105,446 SAMARIUM-IRON-BISMUTH-NITROGEN-BASED MAGNET POWDER AND SAMARIUM-IRON-BISMUTH-NITROGEN-BASED SINTERED MAGNETSep 25, 19Apr 02, 20TDK Corporation; National Institute of Advanced Industrial Science and Technology;
2019/0333,695 MAGNETIC SENSORS PRINTING AND INTEGRATION: DESIGNS, MATERIALS, METHODS, AND PROCESSESApr 27, 18Oct 31, 19Not available
2019/0304,642 FERRITE SINTERED MAGNET AND METHOD FOR MANUFACTURING THE SAMEFeb 07, 19Oct 03, 19TDK Corporation
2019/0304,643 FERRITE SINTERED MAGNETMar 07, 19Oct 03, 19TDK Corporation
2019/0295,590 MAGNETIC TAPE AND MAGNETIC TAPE DEVICEJun 13, 19Sep 26, 19FUJIFILM Corporation
2019/0267,168 FERRITE SINTERED MAGNET, MOTOR AND GENERATORMar 29, 19Aug 29, 19TDK Corporation
2019/0252,100 Ferrite Magnetic Material And Ferrite Sintered MagnetJun 07, 17Aug 15, 19Not available
2019/0035,521 MAGNETIC SUBSTANCE, MAGNETIC TONER, AND MAGNETIC POWDERJan 19, 17Jan 31, 19Japan as represented by President of the University of Tokyo; Dowa Electronics Materials Co. Ltd.;
2019/0035,522 MAGNETIC POWDER AND METHOD FOR MANUFACTURING THE SAME, AND MAGNETIC RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAMEFeb 07, 17Jan 31, 19Not available
2018/0277,290 Ferrite Magnetic Material And Ferrite Sintered MagnetSep 01, 16Sep 27, 18UNION MATERIALS CORPORATION
2018/0166,193 FERRITE SHEET, METHOD FOR MANUFACTURING SAME, AND ELECTRONIC COMPONENT COMPRISING SAMEMay 30, 16Jun 14, 18Not available

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Patents Issued To Date - By Filing Year

19951996199719981999200020012002200320042005200620072008200920102011201220132014201520162017201820192020202120222023Filing Years0255075100% of Matters Issued

Average Time to Issuance