Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6693948 | Apparatus for arc-melting cold iron source and method thereof | Hideaki Mizukami, Ryuji Yamaguchi, Takashi Nakayama, Teruo Tatefuku, Norio Ao +2 more | 2004-02-17 |
| 6597722 | Apparatus for arc-melting cold iron source and method thereof | Hideaki Mizukami, Ryuji Yamaguchi, Norio Ao | 2003-07-22 |
| 5479433 | Direct current arc furnace | Hiroyuki Yamashita, Yoshimi Kawazu, Hidefumi Nakashima | 1995-12-26 |
| 5189682 | Method for increasing the efficiency of a direct current electric arc furnace | Takato Matsuo | 1993-02-23 |
| 5138629 | Direct current electric arc furnace | Takato Matsuo | 1992-08-11 |
| 4375958 | Method for preheating steel scrap by exhaust gas from steelmaking electric furnace | Takasaburo Date, Mitsuya Iguchi, Sumifusa Iwamaru, Hisashi Watanabe | 1983-03-08 |
| 4373911 | Apparatus for preheating a steel scrap | Takasaburo Date, Mitsuya Iguchi, Sumifusa Iwamaru, Hisashi Watanabe | 1983-02-15 |