Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4420333 | Powdery desulfurizer composition | Atsushi Takahashi, Hiroyuki Ishizaka | 1983-12-13 |
| 4340422 | Powdery desulfurizer composition | Atsushi Takahashi, Hiroyuki Ishizuka | 1982-07-20 |