Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12362831 | Optical main signal processing node apparatus and control method of optical main signal processing node apparatus | Kota Asaka, Keita NISHIMOTO, Yukio TOYOSHIMA, Takashi Yamada | 2025-07-15 |
| 12231172 | Optical signal processing apparatus and optical signal processing method | Takuya KANAI, Shin KANEKO, Kazuaki Honda, Hiroo Suzuki, Jun Terada | 2025-02-18 |
| 12212405 | Transmission device management device, transmission device management system, transmission device management method and program | Keita NISHIMOTO, Kota Asaka | 2025-01-28 |
| 12191905 | Optical communication system and protection method for optical communication system | Shin KANEKO, Kazuaki Honda, Hiroo Suzuki, Takuya KANAI, Yasunari Tanaka | 2025-01-07 |
| 12166532 | Optical receiver and optical receiving method | Masamichi Fujiwara | 2024-12-10 |
| 12101124 | Transmission system, transmission method, and communication system | Takuya KANAI, Shin KANEKO, Kazuaki Honda, Hiroo Suzuki | 2024-09-24 |
| 11956098 | Communication apparatus and communication method | Noriko Iiyama, Masamichi Fujiwara, Hiroo Suzuki | 2024-04-09 |
| 11909651 | Communication system, communication apparatus and bandwidth allocation method | Yumiko SENOO, Takahiro Suzuki, Hirotaka UJIKAWA | 2024-02-20 |
| 11880611 | Data processing apparatus, data processing method and program | Takahiro Suzuki, Sang-Yuep KIM | 2024-01-23 |
| 11870497 | Optical receiving apparatus, optical transmission system, optical transmission method and computer program | Ryo Igarashi, Takuya KANAI, Masamichi Fujiwara | 2024-01-09 |
| 11824748 | Communication apparatus and ranging method | Takahiro Suzuki, Sang-Yuep KIM | 2023-11-21 |
| 11652554 | Optical receiving apparatus, optical transmission system, optical transmission method and computer program | Ryo Igarashi, Takuya KANAI, Masamichi Fujiwara | 2023-05-16 |
| 11630656 | Communication device and information processing method | Takumi Harada, Manabu YOSHINO | 2023-04-18 |
| 11595132 | Signal processing apparatus and optical receiver | Noriko Iiyama, Masamichi Fujiwara | 2023-02-28 |
| 11582019 | Receiving apparatus, receiving method and program | Sang-Yuep KIM, Takahiro Suzuki | 2023-02-14 |
| 11539437 | Signal processing apparatus and optical receiving apparatus | Noriko Iiyama, Masamichi Fujiwara | 2022-12-27 |
| 8340520 | Optical network unit | Yukihiro Fujimoto, Ryogo Kubo, Mitsumasa Okada | 2012-12-25 |
| 7555215 | Optical wavelength division multiplexing access system | Hirotaka Nakamura, Hiroo Suzuki, Mitsuhiro Teshima, Ukyo Yamaguchi, Hidetaka Onishi +1 more | 2009-06-30 |
| 7474460 | Optical modulation apparatus | Masamichi Fujiwara, Koji Akimoto, Katsumi Iwatsuki | 2009-01-06 |
| 7336414 | Optical modulating device | Masamichi Fujiwara, Koji Akimoto, Katsumi Iwatsuki | 2008-02-26 |
| 7068412 | Multi-wavelength generating method and apparatus based on flattening of optical spectrum | Masamichi Fujiwara, Katsuhiro Araya, Mitsuhiro Teshima, Kenichi Suzuki | 2006-06-27 |
| 6924924 | Multi-wavelength generating method and apparatus based on flattening of optical spectrum | Masamichi Fujiwara, Katsuhiro Araya, Mitsuhiro Teshima, Kenichi Suzuki | 2005-08-02 |
| 6831774 | Multi-wavelength generating method and apparatus based on flattening of optical spectrum | Masamichi Fujiwara, Katsuhiro Araya, Mitsuhiro Teshima, Kenichi Suzuki | 2004-12-14 |
| 6583924 | Optical amplifier | Hiroji Masuda, Noboru Takachio | 2003-06-24 |
| 6469826 | Optical amplifier | Hiroji Masuda, Noboru Takachio | 2002-10-22 |