Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8414710 | Method for surface treatment of metal material | Sakae Abe | 2013-04-09 |
| 6723240 | Sludge removing device | — | 2004-04-20 |
| 6648995 | Method of quenching workpiece with hole, assistive tool for use in quenching, and crankshaft | Noriyuki Okutsu | 2003-11-18 |