Inventor · disambiguated record
Masao Kiyama
Also filed as: KIYAMA MASAO
14 granted patents·200 citations·filing 1974–1990
93Inventor score
Top patents by PatentIndex Score
14 records- 0188US3963630ALead zirconate-titanate powder of particle sizes between 0.02 and 0.2 micron, process for producing same, and high-density piezoelectric ceramics made of powderNIPPON ELECTRIC CO·Filed 1975·Granted Jun 15, 1976·37 cites·4 claims
- 0281US4548801APlate-like barium ferrite particles for use in magnetic recording and process for producing the sameTODA KOGYO CORP·Filed 1984·Granted Oct 22, 1985·21 cites·11 claims
- 0380US4119536AMethod of disposing of a ferrous-ion containing acidic aqueous waste by forming polycrystalline iron compound particlesNIPPON ELECTRIC CO·Filed 1974·Granted Oct 10, 1978·20 cites·4 claims
- 0469US5133805APlate-like hematite particles, a pigment comprising the same and showing a golden color, and a process for producing the sameTODA KOGYO CORP·Filed 1990·Granted Jul 28, 1992·29 cites·19 claims
- 0568US4529524AProcess for producing plate-like barium ferrite particles for magnetic recordingTODA KOGYO CORP·Filed 1984·Granted Jul 16, 1985·12 cites·14 claims
- 0665US4539129ABarium ferrite particles and process for producing said particlesTODA KOGYO CORP·Filed 1983·Granted Sep 3, 1985·11 cites·13 claims
- 0764US4585568APlate-like barium ferrite particles for magnetic recording and process for producing the sameTODA KOGYO CORP·Filed 1984·Granted Apr 29, 1986·11 cites·13 claims
- 0862US4561988AProcess for production of plate-like barium ferrite particles for magnetic recordingTODA KOGYO CORP·Filed 1984·Granted Dec 31, 1985·9 cites·3 claims
- 0961US4584242APlate-like barium ferrite particles for magnetic recording and process for producing the sameTODA KOGYO CORP·Filed 1985·Granted Apr 22, 1986·16 cites·2 claims
- 1058US4698182AHexagonal plate-like barium ferrite particles for magnetic recording and process for producing the sameTODA KOGYO CORP·Filed 1984·Granted Oct 6, 1987·9 cites·15 claims
- 1145US4806429APlate-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
- 1244US4851292APlate-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
- 1343US4781981APlate-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
- 1432US4752407AProcess for producing plate-like barium ferrite particlesTODA KOGYO CORP·Filed 1987·Granted Jun 21, 1988·3 cites·1 claims
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