Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE39926 | Arc-machining power supply with switching loss reducing element | Toshimitsu Doi, Haruhiko Manabe | 2007-11-27 |
| 7042740 | Soft-switching half-bridge inverter power supply system | Toshimitsu Doi, Kazuhiro Tanaka, Hirokazu Ioroi, Haruhiko Manabe | 2006-05-09 |
| 6833529 | Power supply for short-circuiting arc welding, and automatic welding machine utilizing the same | Tomoyuki Ueyama, Toshiro Uezono | 2004-12-21 |
| 6687136 | Arc-machining power supply with switching loss reducing element | Toshimitsu Doi, Haruhiko Manabe | 2004-02-03 |