Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5162724 | Spectrum analyzer capable of displaying signals obtained during a specified period by means of continuous sweep | Aiichi Katayama, Mitsuyoshi Takano, Hiroyoshi Oka | 1992-11-10 |
| 4940931 | Digital waveform measuring apparatus having a shading-tone display function | Aiichi Katayama | 1990-07-10 |