Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5670870 | Electric field sensor capable of reliably measuring an electric field intensity of a signal | — | 1997-09-23 |
| 5638468 | Optical modulation system | Yuichi Tokano, Takanobu Tanabe, Tsugio Takeda | 1997-06-10 |