Issued Patents All Time
Showing 51–66 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6950218 | Optical modulator | Masaki Sugiyama, Tadao Nakazawa, Takehito Tanaka, Akira Ishii | 2005-09-27 |
| 6925214 | Connecting method of optical function devices, and optical apparatus | Hideyuki Miyata, Yoshihiko Kaitoh, Tadao Nakazawa | 2005-08-02 |
| 6917732 | Connecting method of optical function devices, and optical apparatus | Hideyuki Miyata, Yoshihiko Kaitoh, Tadao Nakazawa | 2005-07-12 |
| 6865306 | Optical device | Shinji Taniguchi, Masaaki Ohyama, Masaaki Norimatsu | 2005-03-08 |
| 6801675 | Optical modulator | Shinji Taniguchi, Masaaki Ohyama, Masaki Sugiyama | 2004-10-05 |
| D495775 | Washing machine with a clothing drier | Sou Sagawa | 2004-09-07 |
| 6783282 | Optical wavelength filter | Tadao Nakazawa, Hideyuki Miyata | 2004-08-31 |
| D491204 | Refrigerator | Sou Sagawa | 2004-06-08 |
| 6741378 | Optical modulator having element for varying optical phase by electrooptic effect | Masaki Sugiyama, Tadao Nakazawa | 2004-05-25 |
| 6678428 | Optical modulator | Minoru Seino, Tetsuo Ishizaka, Takehito Tanaka, Tadao Nakazawa | 2004-01-13 |
| 6594407 | Optical modulator of clock modulation type | Tetsuo Ishizaka, Takehito Tanaka | 2003-07-15 |
| 6584240 | Optical modulator having ridge and associated structure on substrate | Shinji Taniguchi, Masaaki Ohyama, Masaki Sugiyama | 2003-06-24 |
| 6580843 | Optical device | Shinji Taniguchi, Masaaki Ohyama, Masaaki Norimatsu | 2003-06-17 |
| 5680497 | Optical waveguide device | Minoru Seino, Tadao Nakazawa, Takashi Yamane, Yoshinobu Kubota, Kunio Sugeta +1 more | 1997-10-21 |
| 5404412 | Optical waveguide device | Minoru Seino, Tadao Nakazawa, Takashi Yamane, Yoshinobu Kubota, Kunio Sugeta +1 more | 1995-04-04 |
| 5214724 | Optical waveguide device with suppressed DC drift | Minoru Seino, Naoyuki Mekada, Tadao Nakazawa, Yoshinobu Kubota | 1993-05-25 |