Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4474605 | Process for refining high-chromium steels | Yoichi Umeda, Tohru Matsuo, Masayuki Taga, Hidemasa Nakajima | 1984-10-02 |
| 4456477 | Production of ultra-low phosphorus steel | Tohru Matsuo, Yoshimichi Ohkita, Takeo Aoki, Hidemasa Nakajima, Shozo Okamura +2 more | 1984-06-26 |
| 4388084 | Process for gasification of solid carbonaceous material | Koji Okane, Shozo Okamura, Masanobu Sueyasu, Tsutomu Tanaka, Koichi Tanaka | 1983-06-14 |
| 4292073 | Steel making process | Katsukiyo Marukawa, Syoji Anezaki | 1981-09-29 |
| 4290802 | Steel making process | Takeyuki Hirata, Nobuyoshi Hiroki | 1981-09-22 |