Inventor
HIRAYAMA AKIHIKO
JP4 patents
⚠️ This page may combine multiple inventors who share the name “HIRAYAMA AKIHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TODA KOGYO CORP
3 patentsUS4851292AJul 25, 1989
Plate-like barium ferrite particles suitable for use in magnetic recording and process for producing the same
TODA KOGYO CORP8 citations72
US4806429AFeb 21, 1989
Plate-like barium ferrite particles suitable for use in magnetic recording and process for producing the same
TODA KOGYO CORP5 citations72
US4781981ANov 1, 1988
Plate-like magnetoplumbite ferrite particles for magnetic recording and process for producing the same
TODA KOGYO CORP9 citations72