Issued Patents All Time
Showing 26–50 of 91 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11108208 | Optical amplification system and optical amplification method | Takuya Oda, Tetsuro Inui, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi +2 more | 2021-08-31 |
| 11101914 | Optical transmission system and optical transmission method | Koki Shibahara, Takayuki Mizuno | 2021-08-24 |
| 10985846 | Signal separating apparatus and signal separating method | Kohki Shibahara, Takayuki Mizuno, Akira Isoda | 2021-04-20 |
| 10965375 | Optical node device | Hirotaka Ono, Kazunori Senoo, Kenya Suzuki, Keita Yamaguchi, Mitsunori Fukutoku +1 more | 2021-03-30 |
| 10686520 | Transmission quality estimation system, transmission quality estimation device, and transmission quality estimation method | Takuya Oda, Tetsuro Inui, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi +2 more | 2020-06-16 |
| 10615868 | Communication system and fault detection method | Takuya Oda, Tetsuro Inui, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi +2 more | 2020-04-07 |
| 10536238 | Optical transmission system, optical transmission apparatus, and optical reception apparatus | Kohki Shibahara, Takayuki Mizuno, Hiroto Kawakami | 2020-01-14 |
| 10527781 | Communication system and connector | Takuya Oda, Tetsuro Inui, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi +2 more | 2020-01-07 |
| 10511381 | Communication system and fault location specifying method | Takuya Oda, Tetsuro Inui, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi +2 more | 2019-12-17 |
| 10177780 | Signal generating device | Hiroshi Yamazaki, Munehiko Nagatani, Hideyuki Nosaka, Akihide Sano | 2019-01-08 |
| 9803635 | High pressure pump | Takehiko Kato, Shinichiro Koshimoto, Osamu Hishinuma | 2017-10-31 |
| 9771928 | High pressure pump | Takehiko Kato, Shinichiro Koshimoto, Osamu Hishinuma | 2017-09-26 |
| 9614621 | Signal generating circuit, optical signal transmitting apparatus, signal receiving circuit, method for establishing optical signal synchronization, and optical signal synchronization system | Koichi Ishihara, Takayuki Kobayashi, Riichi Kudo, Yasushi Takatori, Munehiro Matsui +6 more | 2017-04-04 |
| 9546653 | Electromagnetic valve and high pressure pump using the same | Yasuhiro Sawada, Shinichiro Koshimoto | 2017-01-17 |
| 9520947 | Signal generating circuit, optical signal transmitting apparatus, signal receiving circuit, method for establishing optical signal synchronization, and optical signal synchronization system | Koichi Ishihara, Takayuki Kobayashi, Riichi Kudo, Yasushi Takatori, Munehiro Matsui +6 more | 2016-12-13 |
| 9160600 | Method for receiving frequency domain multiplexed signal and device for receiving frequency domain multiplexed signal | Riichi Kudo, Takayuki Kobayashi, Koichi Ishihara, Yasushi Takatori, Hideyuki Nosaka +6 more | 2015-10-13 |
| 9116368 | Optical modulation device and bias voltage control method | Hiroto Kawakami, Eiji Yoshida | 2015-08-25 |
| 9065243 | Optical amplifier | Masaki Asobe, Takeshi Umeki, Kouji Enbutsu, Akio Tokura, Hidehiko Takara +2 more | 2015-06-23 |
| 8977141 | Digital signal processing apparatus | Kengo Horikoshi, Etsushi Yamazaki, Takayuki Kobayashi, Eiji Yoshida | 2015-03-10 |
| 8934782 | Transmission method, reception method, transmitter apparatus, and receiver device | Tadao Nakagawa, Etsushi Yamazaki, Koichi Ishihara, Takayuki Kobayashi, Riichi Kudo +5 more | 2015-01-13 |
| 8929750 | Signal generating circuit, optical signal transmitting apparatus, signal receiving circuit, method for establishing optical signal synchronization, and optical signal synchronization system | Koichi Ishihara, Takayuki Kobayashi, Riichi Kudo, Yasushi Takatori, Munehiro Matsui +6 more | 2015-01-06 |
| 8905003 | Fuel injector with fuel pressure sensor and electrical interconnection method of the same | Kouji Morita, Jun Kondo, Tomoki Fujino | 2014-12-09 |
| 8855485 | Frequency offset estimating method and frequency offset estimating apparatus | Tadao Nakagawa, Yasushi Takatori, Riichi Kudo, Munehiro Matsui, Koichi Ishihara +5 more | 2014-10-07 |
| 8787769 | Chromatic dispersion value calculating apparatus, optical signal receiving apparatus, optical signal transmitting apparatus, and chromatic dispersion value calculation method | Koichi Ishihara, Takayuki Kobayashi, Riichi Kudo, Yasushi Takatori, Munehiro Matsui +6 more | 2014-07-22 |
| 8781029 | Frequency offset estimation apparatus, reception apparatus, frequency offset estimation method, and reception method | Tadao Nakagawa, Munehiro Matsui, Koichi Ishihara, Riichi Kudo, Takayuki Kobayashi +5 more | 2014-07-15 |