Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6606433 | Optical multi/demultiplexer | Manabu Oguma, Akira Himeno, Kaname Jinguji, Tsutomu Kitoh | 2003-08-12 |
| 6546161 | No polarization dependent waveguide type optical circuit | Masayuki Okuno, Akira Himeno, Yasuyuki Inoue | 2003-04-08 |
| 6229938 | WDM filter | Akira Himeno, Makoto Abe, Takuya Tanaka, Shin Kamei, Akimasa Kaneko | 2001-05-08 |