Inventor · disambiguated record
Osamu Umezawa
Also filed as: UMEZAWA OSAMU
3 granted patents·24 citations·filing 1998–2000
67Inventor score
Technology areasC21D
Top patents by PatentIndex Score
3 records- 0173US6221178B1Ultra-fine grain steel and method for producing itNAT RES INST METALS·Filed 1998·Granted Apr 24, 2001·18 cites·22 claims
- 0254US6464807B1Production method of ultra fine grain steelJP NAT RES INST FOR METALS·Filed 2000·Granted Oct 15, 2002·3 cites·2 claims
- 0336US6572716B2Fine ferrite-based structure steel production methodNAT RES INST METALS·Filed 1998·Granted Jun 3, 2003·3 cites·5 claims
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