Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6139973 | Method for forming wear-resistant layer and iron-based material, on which wear-resistant layer is applied | Iwao Kawasaki, Masatake Higashi | 2000-10-31 |
| 5904785 | Process for forming a phosphate conversion coating | Kenji Aizawa | 1999-05-18 |