Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10243664 | Optical modulator driver circuit and optical transmitter | Munehiko Nagatani, Hideyuki Nosaka, Toshihiro Itoh, Koichi Murata, Hiroyuki Fukuyama +15 more | 2019-03-26 |
| 10122462 | Transport apparatus and transport method | Takuya Ohara, Kei Kitamura, Yoshiaki Kisaka, Masahiro Suzuki, Etsushi Yamazaki +5 more | 2018-11-06 |
| 9438365 | Client signal mapping circuit and mapping method | Masahiro Suzuki, Takuya Ohara, Takashi Ono, Masahito Tomizawa | 2016-09-06 |
| 9160479 | Client signal mapping circuit and mapping method | Masahiro Suzuki, Takuya Ohara, Takashi Ono, Masahito Tomizawa | 2015-10-13 |
| 8977120 | Client signal accommodating multiplexing apparatus and method | Takuya Ohara, Takashi Ono, Masahito Tomizawa, Hiroyuki Honma, Satoru Saitoh +1 more | 2015-03-10 |
| 8571037 | Optical digital transmission system | Masahito Tomizawa, Yutaka Miyamoto, Yoshiaki Kisaka, Yasuyuki Endo, Katsuyoshi Miura +1 more | 2013-10-29 |
| 8514881 | Digital transmission system and digital transmission method | Yoshiaki Kisaka, Takuya Ohara, Yutaka Miyamoto, Kazuhito Takei, Yasuyuki Endoh +3 more | 2013-08-20 |
| 8135285 | Optical transmission system and method | Yoshiaki Kisaka, Yutaka Miyamoto, Masahito Tomizawa, Yasuyuki Endoh, Kazuhito Takei | 2012-03-13 |
| 7970008 | Multiplexing transmission system and multiplexing transmission method | Yoshiaki Kisaka, Tetsuo Takahashi, Takuya Ohara, Masafumi Koga, Masahito Tomizawa +1 more | 2011-06-28 |
| 7003226 | Wavelength division multiplex optical transmission system | Tadashi Sakamoto, Masahiko Jinno, Seiji Norimatsu, Jun-ichi Kani | 2006-02-21 |
| 6490064 | Wavelength division multiplexing optical transmission system | Tadashi Sakamoto, Masahiko Jinno, Seiji Norimatsu, Jun-ichi Kani | 2002-12-03 |