Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6857762 | Ring illuminator | Seiji Shimokawa, Tatsuya Nagahama, Hirotaka Matsubara | 2005-02-22 |
| 6115153 | Reflection-type hologram scale and optical displacement measuring apparatus therewith | Masaki Tomita, Motohiro Osaki, Masaaki Miyashita | 2000-09-05 |