KO

Katsuyki Ohba

NS Nippon Steel: 1 patents #2,111 of 4,423Top 50%
Overall (All Time): #4,072,358 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4338143 Non-oriented silicon steel sheet with stable magnetic properties Yoshiaki Shimoyama, Shigenobu Koga 1982-07-06