Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12316373 | Optical signal monitoring device, and optical signal monitoring method | — | 2025-05-27 |
| 5099145 | System disconnection detection circuit for a distributed location power source | Hiromasa Higasa, Fumihiko Ishikawa, Shigenori Matsumura, Toshihisa Shimizu | 1992-03-24 |