Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856899 | Optical frequency analyzer using a local oscillator heterodyne detection of incident light | Akira Ohte, Koji Akiyama | 1989-08-15 |
| 4833681 | Semiconductor laser wavelength stabilizer | Koji Akiyama, Akira Ohte | 1989-05-23 |