Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6419770 | Cold-warm working and heat treatment method of high carbon-high alloy group steel | Shu Miyashita, Masami Tanaka, Yoshitaka Nishizawa | 2002-07-16 |
| 4919714 | Method and apparatus for refining steel | Senji Fujita, Hiroya Nakata, Tetsuo Okamoto, Yoshio Inagaki, Keiichi Mizuguchi +1 more | 1990-04-24 |
| 4790516 | Reactor for iron making | Masanobu Ikeda, Noboru Demukai | 1988-12-13 |
| 4706258 | Scrap melting method | Kenji Kanada, Noboru Demukai, Tetsuo Okamoto | 1987-11-10 |
| 4691899 | Apparatus for reactor iron making | Kiyohide Hayashi, Noboru Demukai | 1987-09-08 |
| 4614159 | Powdered coal burner | Kiyohide Hayashi, Kenji Kanada, Noboru Demukai, Tetsuo Okamoto | 1986-09-30 |
| 4605437 | Reactor iron making | Masanobu Ikeda, Noboru Demukai | 1986-08-12 |
| 4371392 | Process for refining a molten metal | Kazumasa Hasegawa, Minao Ito, Kiyoichi Yamano, Shizunori Hayakawa | 1983-02-01 |
| 4308415 | Process for refining a molten metal and an apparatus therefor | Kazumasa Hasegawa, Minao Ito, Kiyoichi Yamano, Shizunori Hayakawa | 1981-12-29 |