Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6977770 | Optical amplifier and control method therefor | Kosuke Komaki, Hiroshi Iizuka | 2005-12-20 |
| 6915864 | Cutter structure for shield machine | Yuuichi Asai, Osamu Takagi, Kazuo Takamizawa, Fumio Kondou, Hidetoshi Sakamoto | 2005-07-12 |