Inventor · disambiguated record
Yukio Koyabu
Also filed as: KOYABU YUKIO
6 granted patents·54 citations·filing 1982–1991
80Inventor score
Files withSUMITOMO HEAVY INDUSTRIES6
Top patents by PatentIndex Score
6 records- 0185US5139567AProcess for recovering valuable metals from a dust containing zincSUMITOMO HEAVY INDUSTRIES·Filed 1991·Granted Aug 18, 1992·35 cites·5 claims
- 0250US4595574AMethod for recovering zinc from substances containing a zinc compoundSUMITOMO HEAVY INDUSTRIES·Filed 1985·Granted Jun 17, 1986·9 cites·1 claims
- 0340US4824479AMethod for producing a carbonaceous solid reductant for direct reduction of iron oreSUMITOMO HEAVY INDUSTRIES·Filed 1988·Granted Apr 25, 1989·4 cites·5 claims
- 0438US4427373AMethod of discharging material from a rotary furnaceSUMITOMO HEAVY INDUSTRIES·Filed 1982·Granted Jan 24, 1984·4 cites·7 claims
- 0533US5123631AMethod of and apparatus for continuously discharging molten metal and slagSUMITOMO HEAVY INDUSTRIES·Filed 1990·Granted Jun 23, 1992·2 cites·5 claims
- 0626US4427370AMethod of treating raw materials in an iron reduction processSUMITOMO HEAVY INDUSTRIES·Filed 1982·Granted Jan 24, 1984·0 cites·7 claims
Join the waitlist — get patent alerts
Get an alert when Yukio Koyabu files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →