Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885708 | Apparatus and method for measuring frequency response function | Takahiro Yamaguchi, Toshiharu Kasahara | 1989-12-05 |
| 4774454 | Distortion measuring system method utilizing signal suppression | Takahiro Yamaguchi, Masayuki Ogawa, Toshiharu Kasahara | 1988-09-27 |
| 4761634 | AD converting device | Takahiro Yamaguchi, Norio Arakawa, Takayuki Ohgami | 1988-08-02 |