Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6090342 | Stave for metallurgical furnace | Takashi Sumigama, Kazumasa Wakimoto, Mamoru Tsukamoto | 2000-07-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6090342 | Stave for metallurgical furnace | Takashi Sumigama, Kazumasa Wakimoto, Mamoru Tsukamoto | 2000-07-18 |