Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5328526 | Method for zinc-phosphating metal surface | Masahiro Jo, Yasutake Mino | 1994-07-12 |
| 5308413 | Process for phosphating metal surface to make thereon a zinc phosphate coating film | Teturo Kishimoto, Minoru Ishida | 1994-05-03 |