Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5221370 | Method for forming zinc phosphate film on metal surface | Masahiro Jo, Yasutake Mino, Koetsu Endo, Akio Tokuyama, Tamotsu Sobata | 1993-06-22 |
| 5039363 | Process for phosphating metal surfaces | Masahiro Jo, Yasutake Mino, Koetsu Endo, Akio Tokuyama, Tamotsu Sobata | 1991-08-13 |