TN

Tsutomu Nagahata

SI Sumitomo Metal Industries: 2 patents #334 of 1,462Top 25%
TC Toshiba Ceramics Co.: 2 patents #107 of 458Top 25%
Overall (All Time): #1,677,698 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4632283 Molten metal discharging device Kazumi Arakawa, Masuo Sugie, Takashi Watanabe, Takumi Nishio, Toshio Kawamura +1 more 1986-12-30
4583721 Molten metal discharging device Kazumi Arakawa, Masuo Sugie, Takashi Watanabe, Takumi Nishio, Toshio Kawamura +1 more 1986-04-22
4325748 Method for producing steel plate having excellent resistance to hydrogen induced cracking Hajime Nashiwa, Toshihiko Kawai, Muneyoshi Takeyama, Youzi Yamaguchi, Tsuneaki Kobayashi 1982-04-20