Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4801190 | Two-way optical fiber transmission network | — | 1989-01-31 |
| 4790614 | Optical filter and optical device using same | Hirohisa Sano, Minoru Maeda | 1988-12-13 |
| 4756587 | Optical multi/demultiplexer | Hirohisa Sano, Minoru Maeda | 1988-07-12 |
| 4726643 | Optical star coupler and method for manufacturing the same | Minoru Maeda, Masayoshi Kameyama, Yasushi Ikuta, Hiroshi Araki, Shigeru Oho | 1988-02-23 |
| 4601535 | Optical coupling system with intermediate coupling medium | Toshiki Tanaka, Naoki Chinone | 1986-07-22 |
| 4259101 | Method for producing optical fiber preform | Yasuo Tsukuda, Kenzo Susa, Iwao Matsuyama, Tsuneo Suganuma | 1981-03-31 |