Inventor · disambiguated record
Sadao Hirotsu
Also filed as: HIROTSU SADAO
5 granted patents·68 citations·filing 1981–1995
81Inventor score
Files withNISSHIN STEEL CO LTD5
Top patents by PatentIndex Score
5 records- 0171US5035855AMartensitic precipitation-hardenable stainless steelNISSHIN STEEL CO LTD·Filed 1990·Granted Jul 30, 1991·20 cites·6 claims
- 0266US5494537AHigh strength and toughness stainless steel strip and process for the production of the sameNISSHIN STEEL CO LTD·Filed 1995·Granted Feb 27, 1996·17 cites·6 claims
- 0363US4849166AHigh strength stainless steelNISSHIN STEEL CO LTD·Filed 1988·Granted Jul 18, 1989·14 cites·3 claims
- 0463US4378246APrecipitation hardening type stainless steel for springNISSHIN STEEL CO LTD·Filed 1981·Granted Mar 29, 1983·15 cites·2 claims
- 0531US4847168ASlicing saw bladeNISSHIN STEEL CO LTD·Filed 1987·Granted Jul 11, 1989·2 cites·2 claims
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