Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4310412 | Method for classification of coals for coke production | Hiroaki Yamanaka, Kazuhiro Yokoyama, Yasuhiro Yone, Tokuzi Yamaguchi | 1982-01-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4310412 | Method for classification of coals for coke production | Hiroaki Yamanaka, Kazuhiro Yokoyama, Yasuhiro Yone, Tokuzi Yamaguchi | 1982-01-12 |