YK

Yoshiro Koyasu

NS Nippon Steel: 1 patents #45 of 251Top 20%
📍 Muroran, JP: #2 of 4 inventorsTop 50%
Overall (1997): #55,973 of 185,788Top 35%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5660648 Microalloyed steel for hot forging free of subsequent quenching and tempering, process for producing hot forging, and a hot forging Hiromasa Takada, Motohide Mori, Masami Suzuki 1997-08-26