Inventor · disambiguated record
Motofumi Koyuba
Also filed as: KOYUBA MOTOFUMI
5 granted patents·2 pending applications·39 citations·filing 1986–2013
78Inventor score
Top patents by PatentIndex Score
7 records- 0184US8920583B2Steel pipe excellent in deformation characteristics and method of producing the sameASAHI HITOSHI·Filed 2008·Granted Dec 30, 2014·6 cites·1 claims
- 0266US4772771AMethod for the production of high strength electric seam welded oil-well pipeNIPPON STEEL CORP·Filed 1986·Granted Sep 20, 1988·13 cites·2 claims
- 0346US2015176101A1Hollow stabilizer, and steel pipe for hollow stabilizers and method of producing the sameNIPPON STEEL & SUMITOMO METAL CORP·Filed 2013·Application pending·0 cites
- 0440US7648191B2Automobile strength memberNIPPON STEEL CORP·Filed 2004·Granted Jan 19, 2010·4 cites·9 claims
- 0538US5275893ALine pipe having good corrosion-resistance and weldabilityNIPPON STEEL CORP·Filed 1992·Granted Jan 4, 1994·15 cites·8 claims
- 0634US2009250146A1High Strength Thick-Gauge Electric-Resistance Welded Steel Pipe Excellent in Hardenability, Hot Workability and Fatigue Strength and Method of Production of the SameISHITSUKA TETSUO·Filed 2006·Application pending·0 cites
- 0723US5538044AWelded steel pipe steel and welded steel pipe having good wearNIPPON STEEL CORP·Filed 1995·Granted Jul 23, 1996·1 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →