Inventor
FUJIKAWA YOSHINORI
JP37 patents
⚠️ This page may combine multiple inventors who share the name “FUJIKAWA YOSHINORI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TDK CORP
33 patentsUS6559084B1May 6, 2003
Dielectric ceramic composition and electronic device
TDK CORP47 citations96
US6403513B1Jun 11, 2002
Dielectric ceramic composition and electronic device
TDK CORP56 citations96
US6699809B2Mar 2, 2004
Dielectric ceramic composition and electronic device
TDK CORP35 citations92
US6548437B2Apr 15, 2003
Dielectric ceramics and electronic component
TDK CORP47 citations92
US6544916B1Apr 8, 2003
Manufacture method of dielectric ceramic composition
TDK CORP42 citations92
US6335302B1Jan 1, 2002
Dielectric composition and ceramic capacitor using the same
TDK CORP32 citations90
US7919007B2Apr 5, 2011
Ferrite magnetic material
TDK CORP8 citations83
US7528088B2May 5, 2009
Electronic device
TDK CORP18 citations83
US10734143B2Aug 4, 2020
R-T-B based sintered magnet
TDK CORP2 citations73
US10546672B2Jan 28, 2020
Rare earth based magnet
TDK CORP2 citations73
US10096412B2Oct 9, 2018
Rare earth based magnet
TDK CORP3 citations73
US7314531B2Jan 1, 2008
R-T-B system rare earth permanent magnet
TDK CORP8 citations73
US7311788B2Dec 25, 2007
R-T-B system rare earth permanent magnet
TDK CORP8 citations73
US10083783B2Sep 25, 2018
Rare earth based magnet
TDK CORP2 citations72
US10991493B2Apr 27, 2021
Rare earth magnet
TDK CORP0 citations60
US10984929B2Apr 20, 2021
Rare earth magnet
TDK CORP0 citations60
US10242777B2Mar 26, 2019
Alloy for R-T-B based sintered magnet and R-T-B based sintered magnet
TDK CORP1 citations60
US7744954B2Jun 29, 2010
Method of producing a powder, powder, and multilayered ceramic capacitor using the same
TDK CORP3 citations60
US6407024B1Jun 18, 2002
Dielectric composition and ceramic capacitor made from the same
TDK CORP3 citations60
US10748686B2Aug 18, 2020
R-T-B based sintered magnet
TDK CORP0 citations52
US11657934B2May 23, 2023
R-T-B based permanent magnet
TDK CORP0 citations51
US11152142B2Oct 19, 2021
R-T-B based permanent magnet
TDK CORP0 citations51
US10453595B2Oct 22, 2019
Rare earth permanent magnet
TDK CORP0 citations51
US12548700B2Feb 10, 2026
R-T-B-based permanent magnet and method for producing same, motor, and automobile
TDK CORP0 citations50
US10726980B2Jul 28, 2020
Rare earth magnet
TDK CORP0 citations50
US9548148B2Jan 17, 2017
R-T-B based sintered magnet
TDK CORP1 citations49
US12412687B2Sep 9, 2025
Rare-earth-based magnet powder, bonded magnet, bonded magnet compound, sintered magnet, method of manufacturing rare-earth-based magnet powder, and method of manufacturing rare-earth based permanent magnet
TDK CORP0 citations47
US10748685B2Aug 18, 2020
R-T-B based sintered magnet
TDK CORP0 citations41
US10256016B2Apr 9, 2019
Rare earth based magnet
TDK CORP0 citations41
US10109402B2Oct 23, 2018
Rare earth based magnet
TDK CORP0 citations41
US10090087B2Oct 2, 2018
Rare earth based magnet
TDK CORP0 citations41
US10020099B2Jul 10, 2018
Rare earth based magnet
TDK CORP0 citations41
US9548149B2Jan 17, 2017
Rare earth based magnet
TDK CORP0 citations41