Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12276832 | Optical device, substrate optical waveguide element, and optical communication apparatus | Jianping Wang, Akira Oka | 2025-04-15 |
| 12085752 | Optical waveguide device and optical integrated circuit that includes optical waveguide device | — | 2024-09-10 |
| 10659154 | Optical module and control method of controlling center wavelength of optical filter | Toshio Ishii | 2020-05-19 |