Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9065243 | Optical amplifier | Masaki Asobe, Takeshi Umeki, Kouji Enbutsu, Akio Tokura, Yutaka Miyamoto +2 more | 2015-06-23 |
| 6535661 | Optical signal processing method and optical signal processing apparatus | Ryo Takahashi, Tatsushi Nakahara, Hiroshi Yoshimura, Hiroyuki Suzuki, Hiroki Itoh | 2003-03-18 |
| 6456760 | Optical signal processing apparatus and optical signal processing method | Takashi Kurokawa, Hiroyuki Tsuda, Katsunari Okamoto, Kazunori Naganuma, Tetsuyoshi Ishii | 2002-09-24 |
| 6127200 | Vertical-cavity surface-emitting laser and method for manufacturing the same | Yoshitaka Ohiso, Yoshio Itoh, Chikara Amano, Yoshitaka Kohama, Kouta Tateno +1 more | 2000-10-03 |
| 6122419 | Optical signal processing apparatus and optical signal processing method | Takashi Kurokawa, Hiroyuki Tsuda, Katsunari Okamoto, Kazunori Naganuma, Tetsuyoshi Ishii | 2000-09-19 |
| 5864575 | Vertical-cavity surface-emitting laser and method for manufacturing the same | Yoshitaka Ohiso, Yoshio Itoh, Chikara Amano, Yoshitaka Kohama, Kouta Tateno +1 more | 1999-01-26 |