Inventor · disambiguated record

Yasumi Shimazaki

Also filed as: SHIMAZAKI YASUMI

2 granted patents·23 citations·filing 1981–1985

60Inventor score

Technology areasB21C B23K

Files withNIPPON STEEL CORP2

Top patents by PatentIndex Score

2 records

0145US4645893AMethod for manufacturing spiral-welded steel pipeNIPPON STEEL CORP·Filed 1985·Granted Feb 24, 1987·12 cites·2 claims
0242US4436239AMethod and apparatus for manufacturing spiral pipeNIPPON STEEL CORP·Filed 1981·Granted Mar 13, 1984·11 cites·11 claims

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