Issued Patents All Time
Showing 1–25 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12308006 | Musical tone generating device and control method of musical tone generating device | Tetsuya Hirano | 2025-05-20 |
| 12224889 | Adaptive equalization filter and method for updating filter coefficients | Etsushi Yamazaki, Masanori Nakamura, Kengo Horikoshi, Takeo SASAI, Yoshiaki Kisaka | 2025-02-11 |
| 12107762 | Optical and electronic integrated switch | Osamu Moriwaki, Shunichi Soma, Keita Yamaguchi, Kenya Suzuki, Seiki Kuwabara +3 more | 2024-10-01 |
| 12034484 | Optical communication network management apparatus | Takafumi Tanaka, Hideki Nishizawa, Tetsuro Inui, Seiki Kuwabara, Shuto Yamamoto | 2024-07-09 |
| 11979694 | Optical and electronic integrated switch | Osamu Moriwaki, Shunichi Soma, Keita Yamaguchi, Kenya Suzuki, Seiki Kuwabara +3 more | 2024-05-07 |
| 11930309 | Optical and electronic integrated switch | Keita Yamaguchi, Osamu Moriwaki, Shunichi Soma, Kenya Suzuki, Seiki Kuwabara +3 more | 2024-03-12 |
| 11881897 | Optical and electronic integrated switch and optical network system | Hideki Nishizawa, Seiki Kuwabara, Shuto Yamamoto, Tetsuro Inui, Shunichi Soma +3 more | 2024-01-23 |
| 11816026 | Digital signal processing device and control method of digital signal processing device | Tetsuya Hirano | 2023-11-14 |
| 11799547 | Signal processing apparatus, signal processing method, and program | Kengo Horikoshi, Masanori Nakamura, Hideki Nishizawa, Etsushi Yamazaki | 2023-10-24 |
| 11728889 | Optical transmitting apparatus and transmission characteristics estimation method | Takeo SASAI, Fukutaro HAMAOKA, Masanori Nakamura | 2023-08-15 |
| 11683093 | Wavelength dispersion compensation apparatus, optical receiving apparatus, wavelength dispersion compensation method and computer program | Masanori Nakamura, Kengo Horikoshi, Shuto Yamamoto, Takayuki Kobayashi, Yoshiaki Kisaka +1 more | 2023-06-20 |
| 11671119 | Signal processing apparatus and signal processing method | Etsushi Yamazaki, Masanori Nakamura, Yoshiaki Kisaka, Masahito Tomizawa | 2023-06-06 |
| 11581944 | Optical transmission system | Shuto Yamamoto, Akira Masuda, Hiroki Taniguchi, Yoshiaki Kisaka | 2023-02-14 |
| 11556303 | Digital signal processing device and control method of digital signal processing device | — | 2023-01-17 |
| 11546064 | Optical transmission system and transmission mode selecting method | Tetsuro Inui, Hideki Nishizawa, Akira Hirano, Shokei Kobayashi, Fumikazu INUZUKA +4 more | 2023-01-03 |
| 11463169 | Wavelength dispersion amount estimation apparatus | Kengo Horikoshi, Masanori Nakamura, Yoshiaki Kisaka, Fukutaro HAMAOKA | 2022-10-04 |
| 11444699 | Optical transmission system, optical receiving apparatus and optical transmission method | Akira Masuda, Fukutaro HAMAOKA, Shuto Yamamoto, Kengo Horikoshi, Masanori Nakamura +2 more | 2022-09-13 |
| 11381317 | Optical receiving apparatus and waveform distortion compensation method | Yoshiaki Kisaka, Masanori Nakamura | 2022-07-05 |
| 11349572 | Optical transmission system, optical transmitting apparatus, and optical receiving apparatus | Masanori Nakamura, Etsushi Yamazaki, Yoshiaki Kisaka | 2022-05-31 |
| 11342990 | State estimating device and communication system | Seiki Kuwabara, Wataru Kawakami, Hideki Nishizawa, Akira Hirano, Shokei Kobayashi +4 more | 2022-05-24 |
| 11316588 | Wavelength dispersion compensation apparatus, wavelength dispersion compensation method, and optical receiving apparatus | Kyo MINOGUCHI, Etsushi Yamazaki, Yoshiaki Kisaka | 2022-04-26 |
| 11303359 | Communication system, optical transmitting apparatus, and optical receiving apparatus | Fukutaro HAMAOKA, Masanori Nakamura, Yoshiaki Kisaka | 2022-04-12 |
| 11283528 | Digital coherent receiver and digital coherent receiving method | Akira Masuda, Shuto Yamamoto, Fukutaro HAMAOKA, Masanori Nakamura, Asuka Matsushita +1 more | 2022-03-22 |
| 11258512 | Receiving apparatus and receiving method | Masanori Nakamura, Kengo Horikoshi | 2022-02-22 |
| 11245487 | Optical transmission control method and optical transmission system | Fukutaro HAMAOKA, Kyo MINOGUCHI, Yoshiaki Kisaka | 2022-02-08 |