Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7499212 | Optical amplifier | — | 2009-03-03 |
| 7330303 | Wavelength division multiplexed optical amplifier | Takashi Sato, Tomoaki Takeyama, Keiko Sasaki, Shinya Inagaki | 2008-02-12 |
| 6534997 | Apparatus and a method for locating a fault of a transmission line | Masakazu Horishita, Kazuyoshi Shimizu | 2003-03-18 |
| 6528981 | Low-voltage current mirror circuit | — | 2003-03-04 |
| 5892402 | High precision current output circuit | Norio Ueno | 1999-04-06 |