Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4391702 | Method for classification of coals for coke production | Shozo Murakami, Hiroaki Yamanaka, Kazuhiro Yokoyama, Tokuji Yamaguchi | 1983-07-05 |
| 4310412 | Method for classification of coals for coke production | Syozo Murakami, Hiroaki Yamanaka, Kazuhiro Yokoyama, Tokuzi Yamaguchi | 1982-01-12 |