Inventor · disambiguated record
Akihiko Hirayama
Also filed as: HIRAYAMA AKIHIKO
3 granted patents·22 citations·filing 1987–1987
69Inventor score
Files withTODA KOGYO CORP3
Top patents by PatentIndex Score
3 records- 0145US4806429APlate-like barium ferrite particles suitable for use in magnetic recording and process for producing the sameTODA KOGYO CORP·Filed 1987·Granted Feb 21, 1989·5 cites·3 claims
- 0244US4851292APlate-like barium ferrite particles suitable for use in magnetic recording and process for producing the sameTODA KOGYO CORP·Filed 1987·Granted Jul 25, 1989·8 cites·3 claims
- 0343US4781981APlate-like magnetoplumbite ferrite particles for magnetic recording and process for producing the sameTODA KOGYO CORP·Filed 1987·Granted Nov 1, 1988·9 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →