Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6156998 | Control of welding arc length | Norihito Takahashi, Tomoyuki Ueyama, Tuneo Takeda, Honjyun Tong | 2000-12-05 |
| 4409465 | Pulse arc welding method and device in which pulse current and background current have a constant current characteristic | Hideyuki Yamamoto, Moritoshi Nagasaka | 1983-10-11 |