Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5450623 | CN ratio measuring apparatus | Itoshi Yokoyama, Masaaki Nagai, Kenichi Ishida | 1995-09-12 |
| 5291285 | Television signal level meter | Itoshi Yokoyama, Masaaki Nagai | 1994-03-01 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5450623 | CN ratio measuring apparatus | Itoshi Yokoyama, Masaaki Nagai, Kenichi Ishida | 1995-09-12 |
| 5291285 | Television signal level meter | Itoshi Yokoyama, Masaaki Nagai | 1994-03-01 |