Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12392968 | Optical device, optical modulation device and optical transmission device | Kei Kato | 2025-08-19 |
| 12345933 | Optical device and optical transmission apparatus using same | Kei Kato | 2025-07-01 |
| 12339529 | Optical modulator and optical transmission device using same | Minoru Shinozaki, Yu Kataoka | 2025-06-24 |
| 12321047 | Optical modulator and optical transmission device using same | Kei Kato | 2025-06-03 |
| 11586061 | Optical waveguide device, and optical modulation device and optical transmission device using same | Kei Kato, Norikazu Miyazaki | 2023-02-21 |
| 11402594 | Optical waveguide device, and optical modulation device and optical transmission device using same | Kei Kato, Norikazu Miyazaki | 2022-08-02 |
| 11215754 | Optical waveguide element and manufacturing method therefor | Yuji Yamane, Norikazu Miyazaki, Yu Kataoka | 2022-01-04 |
| 10890788 | Optical waveguide device module | Toshio Kataoka | 2021-01-12 |
| 10739624 | Optical control element | Yuji Yamane, Tetsuya Fujino | 2020-08-11 |
| 8923673 | Optical modulator | Kei Katou, Shinsuke Kanno, Ryo Shimizu, Norikazu Miyazaki | 2014-12-30 |