Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4443273 | Method for replenishing chemical in zinc phosphate treatment | Koichi Saito, Yasutake Mino, Ryoichi Murakami | 1984-04-17 |
| 4256601 | Degreasing composition for treating metal surface | Tamotsu Sobata | 1981-03-17 |