Inventor · disambiguated record
Tatsuo Fukuzumi
Also filed as: FUKUZUMI TATSUO
10 granted patents·81 citations·filing 1991–2012
88Inventor score
Technology areasC22C
Files withMITSUBISHI STEEL MFG6FUKUZUMI TATSUO2MITSUBISHI STEEL MURORAN INC1YOSHIMURA TECHNICAL OFFICE INC1
Top patents by PatentIndex Score
10 records- 0177US6322747B1High-strength spring steelMITSUBISHI STEEL MURORAN INC·Filed 2000·Granted Nov 27, 2001·19 cites·20 claims
- 0267US6838049B2Room-temperature-formable magnesium alloy with excellent corrosion resistanceMITSUBISHI STEEL MFG·Filed 2003·Granted Jan 4, 2005·7 cites·3 claims
- 0362US6737019B2Sulfur-containing free-cutting steelMITSUBISHI STEEL MFG·Filed 2002·Granted May 18, 2004·4 cites·10 claims
- 0462US5183634AHigh strength spring steelMITSUBISHI STEEL MFG·Filed 1991·Granted Feb 2, 1993·16 cites·1 claims
- 0561US5118469AHigh strength spring steelMITSUBISHI STEEL MFG·Filed 1991·Granted Jun 2, 1992·15 cites·4 claims
- 0659US5518685ASteel for carburized gearMITSUBISHI STEEL MFG·Filed 1995·Granted May 21, 1996·15 cites·2 claims
- 0758US8337642B2Spring steel with improved hardenability and pitting resistanceFUKUZUMI TATSUO·Filed 2012·Granted Dec 25, 2012·0 cites·3 claims
- 0856US7014812B2Sulfur-containing free-cutting steel for machine structural useYOSHIMURA TECHNICAL OFFICE INC·Filed 2002·Granted Mar 21, 2006·4 cites·8 claims
- 0955US7850794B2Spring steel with improved hardenability and pitting resistanceMITSUBISHI STEEL MFG·Filed 2003·Granted Dec 14, 2010·1 cites·3 claims
- 1054US8197614B2Spring steel with improved hardenability and pitting resistanceFUKUZUMI TATSUO·Filed 2010·Granted Jun 12, 2012·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →