Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6690245 | Oscillation control circuit | Eiichi Hasegawa, Kazuhisa Oyama | 2004-02-10 |
| 6556094 | Oscillator circuit and integrated circuit for oscillation | Eiichi Hasegawa, Kazuhisa Oyama, Kunihiko Tsukagoshi | 2003-04-29 |