Inventor
KAWASAKI HIROFUMI
JP13 patents
⚠️ This page may combine multiple inventors who share the name “KAWASAKI HIROFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TODA KOGYO CORP
10 patentsUS5156922AOct 20, 1992
Acicular magnetic iron based alloy particles for magnetic recording and method of producing the same
TODA KOGYO CORP25 citations91
US5531922AJul 2, 1996
Granulated particles for magnetic particles for magnetic recording, and process for producing the same
TODA KOGYO CORP33 citations90
US7670676B2Mar 2, 2010
Pharmaceutical raw material
TODA KOGYO CORP9 citations83
US5599378AFeb 4, 1997
Spindle-shaped magnetic iron based alloy particles and process for producing the same
TODA KOGYO CORP6 citations72
US5466306ANov 14, 1995
Spindle-shaped magnetic iron based alloy particles
TODA KOGYO CORP11 citations72
US4873010AOct 10, 1989
Spindle-like magnetic iron oxide particles and process for producing the same
TODA KOGYO CORP15 citations71
US5238483AAug 24, 1993
Acicular magnetic iron based alloy particles for magnetic recording and method of producing the same
TODA KOGYO CORP2 citations61
US12562297B2Feb 24, 2026
R-T-B-based rare earth magnet particles, process for producing the R-T-B-based rare earth magnet particles, and bonded magnet
TODA KOGYO CORP0 citations59
US11120932B2Sep 14, 2021
R-T-B-based rare earth magnet particles, and bonded magnets containing R-T-B-based rare earth magnet particles
TODA KOGYO CORP0 citations59
US8907755B2Dec 9, 2014
R-T-B-based rare earth magnet particles, process for producing the R-T-B- based rare earth magnet particles, and bonded magnet
TODA KOGYO CORP0 citations38