Inventor
HIRATA FUMIHIKO
JP10 patents
⚠️ This page may combine multiple inventors who share the name “HIRATA FUMIHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TDK CORP
7 patentsUS5648039AJul 15, 1997
Process for the production of anisotropic ferrite magnets
TDK CORP20 citations92
US6258290B1Jul 10, 2001
Magnet powder, sintered magnet, process for producing them, bonded magnet, motor and magnetic recording medium
TDK CORP29 citations91
US6086781AJul 11, 2000
Magnet powder, sintered magnet, process for producing them, bonded magnet, motor and magnetic recording medium
TDK CORP38 citations91
US6132635AOct 17, 2000
Process for the production of anisotropic ferrite magnets and anisotropic ferrite magnets as well as hexagonal system ferrite particles and their production process
TDK CORP10 citations73
US5945028AAug 31, 1999
Hexagonal system ferrite particles and their production process
TDK CORP13 citations73
US5811024ASep 22, 1998
Preparation of anisotropic hexagonal barium ferrite sintered magnet
TDK CORP13 citations73
US5607615AMar 4, 1997
Hexagonal ba-ferrite sintered magnet, its making method, and polar anisotropy ring magnet
TDK CORP12 citations73