Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12334979 | Optical wavelength multiplexing transmission device and optical wavelength multiplexing transmission method | Shigeru Ishii, Takehiro Fujita, Tomoaki Takeyama | 2025-06-17 |
| 12231227 | Transmission apparatus and transmission system | Xiang Zhang, Atsushi Kodama, Kyosuke Sone | 2025-02-18 |
| 11711160 | Transmission device and transmission system | Xiang Zhang, Kyosuke Sone | 2023-07-25 |
| 11515960 | Transmission device, transmission system, and transmission method | — | 2022-11-29 |
| 11384013 | Automotive laminated glass, and production method therefor | Naoki MITAMURA, Hiroki Nakamura, Naoya Hirata | 2022-07-12 |
| 11270386 | Information processing device, information processing method, and program | Masaharu Asano, Yosuke KIYAMA, Akinori Yamada, Ryo Yamamoto, Takashi Hasegawa +4 more | 2022-03-08 |
| 11018763 | Network system, management device, and management method | Shinji Komiya, Tomoaki Takeyama | 2021-05-25 |
| 10979168 | Transmission device, transmission system, and transmission method | — | 2021-04-13 |
| 10960648 | Automotive laminated glass, and production method therefor | Naoki MITAMURA, Hiroki Nakamura, Naoya Hirata | 2021-03-30 |
| 10541749 | Optical wavelength multiplexing transmission apparatus and optical wavelength multiplexing transmission method | Shigeru Ishii, Hiroki Oi, Takehiro Fujita | 2020-01-21 |
| 10003429 | Optical transmission device that transmits wavelength division multiplexed optical signal and optical transmission system | — | 2018-06-19 |
| 9991985 | Optical transmission control device and optical signal wavelength determination method | Tomoaki Takeyama | 2018-06-05 |
| 9391426 | Raman amplifier and gain control method | — | 2016-07-12 |
| 9249047 | Ultraviolet and infrared absorptive glass | Naoki MITAMURA | 2016-02-02 |
| 9206079 | Chemically strengthened glass plate and method for manufacturing same | Yu Matsuda, Naoki MITAMURA, Tadashi Muramoto | 2015-12-08 |
| 9093816 | Transmission apparatus and transmission system | Norifumi Shukunami | 2015-07-28 |
| 9065570 | Optical amplifier with feedback to obtain set gain and gain tilt | Norifumi Shukunami, Hiroki Ooi | 2015-06-23 |
| 8861965 | Optical transmission apparatus | Kentaro Nakamura, Norifumi Shukunami | 2014-10-14 |
| 8785338 | Glass with low solar transmittance | Katsushi Yoshimura, Takahiro Mori | 2014-07-22 |
| 8538264 | Dispersion compensating apparatus, dispersion compensating method, optical receiving apparatus, and optical receiving method | Masahiro Yuki, Tsukasa Takahashi, Miki Onaka, Norifumi Shukunami, Toshihiro Ohtani +1 more | 2013-09-17 |
| 8068275 | Method for measuring nonlinear optical properties | Norifumi Shukunami | 2011-11-29 |
| 7929201 | Multistage optical amplifier with gain control using pump ratio | Norifumi Shukunami, Yuji Tamura, Yoshio Shimano, Masao Nakata, Takashi Satou | 2011-04-19 |
| 7692849 | Method for measuring nonlinear optical properties, and optical amplifier and optical transmission system using same | Norifumi Shukunami | 2010-04-06 |
| 6903324 | Optical amplifier amplifying wavelength multiplexed light, and wavelength multiplexed light communications system | Hiroaki Tomofuji, Takuji Maeda, Norifumi Shukunami, Yuichi Suzuki | 2005-06-07 |