Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7291807 | TIG welding equipment and TIG welding method | Naoji Yamaoka, Shigeru Tanimizu, Keiichi Shimazaki, Hirofumi Morita | 2007-11-06 |
| 6066828 | Laser beam welding method for carbon steels | Hiroshi Mitsuyoshi | 2000-05-23 |