Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9182601 | Optical device | Akira Inoue, Kenichiro Takahashi, Michiko Harumoto | 2015-11-10 |
| 8983256 | Optical fiber cable | Kazuhisa Konishi, Kenichiro Takahashi, Osamu SHIMAKAWA, Yuuichi Mitose | 2015-03-17 |
| 7315672 | Optical device | Makoto Katayama | 2008-01-01 |
| 7120331 | Optical device and production method thereof | Takayuki Shimazu, Makoto Katayama | 2006-10-10 |
| 7068877 | Movable mirror device, dispersion compensator, gain equalizer, and optical ADM apparatus | Michiko Takushima, Makoto Katayama, Takayuki Shimazu | 2006-06-27 |
| 7003191 | Optical switch | Takahiro Sunaga, Makoto Katayama | 2006-02-21 |
| 6993218 | Optical switch and optical switch array | Makoto Katayama, Masayuki Nishimura | 2006-01-31 |
| 6931172 | Optical switch, optical add/drop apparatus, optical transmission system, and method of producing optical switch | Takahiro Sunaga, Makoto Katayama | 2005-08-16 |
| 6892003 | Variable dispersion compensator and optical transmission system | Makoto Katayama, Toshiaki Okuno, Masayuki Nishimura, Tomomi Sano, Masakazu Shigehara +2 more | 2005-05-10 |
| 6868198 | Optical switch for switching between multiple main light emitters | Takahiro Sunaga, Makoto Katayama, Masato Furukawa, Manabu Shiozaki | 2005-03-15 |
| 6801683 | Optical module, light divider/insertor and light transmission device | Makoto Katayama, Hiroshi Suganuma, Masayuki Nishimura | 2004-10-05 |
| 6782155 | Optical switch | Makoto Katayama, Manabu Shiozaki, Masayuki Nishimura | 2004-08-24 |
| 6782185 | Optical variable attenuator and optical module | Makoto Katayama, Hiroshi Suganuma, Masayuki Nishimura | 2004-08-24 |
| 6659614 | Variable dispersion compensator and optical transmission system | Makoto Katayama, Masayuki Nishimura, Shunichi Tsuchiya | 2003-12-09 |
| 5617460 | Method of increasing index of refraction of silica glass | Makoto Katayama | 1997-04-01 |