Inventor · disambiguated record
Tohei Ototani
Also filed as: OTOTANI TOHEI
15 granted patents·251 citations·filing 1975–1991
94Inventor score
Top patents by PatentIndex Score
15 records- 0198US4094666AMethod for refining molten iron and steelsMETAL RESEARCH CORP·Filed 1977·Granted Jun 13, 1978·45 cites·5 claims
- 0283US4484946AMethod of producing iron-, nickle-, or cobalt-base alloy with low contents of oxygen, sulphur, and nitrogenMETAL RESEARCH CORP·Filed 1982·Granted Nov 27, 1984·14 cites·11 claims
- 0381US4671820AComposite calcium clads for deoxidation and desulfurization from molten steelsOTOTANI TOHEI·Filed 1985·Granted Jun 9, 1987·39 cites·4 claims
- 0477US4832742AFlexible refining-agent clad wire for refining molten iron group metalMETAL RESEARCH CORP·Filed 1988·Granted May 23, 1989·28 cites·12 claims
- 0573US4035892AComposite calcium clad material for treating molten metalsOTOTANI TOHEI·Filed 1975·Granted Jul 19, 1977·24 cites·9 claims
- 0667US4097268AMethod of treating molten ferrous material with composite rods containing CaTOHEI OTOTANI·Filed 1977·Granted Jun 27, 1978·8 cites·4 claims
- 0764US5268141AIron based alloy having low contents of aluminum silicon, magnesium, calcium, oxygen, sulphur, and nitrogenMITSUI SHIPBUILDING ENG·Filed 1991·Granted Dec 7, 1993·18 cites·7 claims
- 0862US4999053AMethod of producing an iron-, cobalt- and nickel-base alloy having low contents of sulphur, oxygen and nitrogenMITSUI SHIPBUILDING ENG·Filed 1989·Granted Mar 12, 1991·14 cites·16 claims
- 0961US4944798AMethod of manufacturing clean steelMETAL RESEARCH CORP·Filed 1989·Granted Jul 31, 1990·12 cites·5 claims
- 1057US4698095AComposite calcium clads for treating molten ironOTOTANI TOHEI·Filed 1986·Granted Oct 6, 1987·17 cites·2 claims
- 1151US5225156AClean steel compositionMETAL RESEARCH CORP·Filed 1990·Granted Jul 6, 1993·8 cites·2 claims
- 1251US5055018AClean steelMETAL RESEARCH CORP·Filed 1990·Granted Oct 8, 1991·8 cites·7 claims
- 1341US4729787AMethod of producing an iron; cobalt and nickel base alloy having low contents of sulphur, oxygen and nitrogenMITSUI SHIPBUILDING ENG·Filed 1986·Granted Mar 8, 1988·4 cites·16 claims
- 1440US4710481AMethod for melting Ti or a high-Ti alloy in CaO refractoriesMITSUI SHIPBUILDING ENG·Filed 1986·Granted Dec 1, 1987·7 cites·20 claims
- 1537US4820485AMethod of producing an iron-, cobalt- and nickel-base alloy having low contents of sulphur, oxygen and nitrogenMITSUI SHIPBUILDING ENG·Filed 1987·Granted Apr 11, 1989·5 cites·4 claims
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