Inventor · disambiguated record
Yoshito Tsuyama
Also filed as: TSUYAMA YOSHITO
3 granted patents·68 citations·filing 1981–1985
72Inventor score
Files withNIPPON STEEL CORP3
Top patents by PatentIndex Score
3 records- 0185US4603806AMethod of manufacturing metal pipe with longitudinally differentiated wall thicknessNIPPON STEEL CORP·Filed 1984·Granted Aug 5, 1986·45 cites·8 claims
- 0245US4645893AMethod for manufacturing spiral-welded steel pipeNIPPON STEEL CORP·Filed 1985·Granted Feb 24, 1987·12 cites·2 claims
- 0342US4436239AMethod and apparatus for manufacturing spiral pipeNIPPON STEEL CORP·Filed 1981·Granted Mar 13, 1984·11 cites·11 claims
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