Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5386231 | Video camera | Shuji Shimizu, Toshiaki Isogawa | 1995-01-31 |
| 4630116 | Video signal inverting circuit | Toshiaki Isogawa, Ryuji Shiono, Tsutomu Niimura, Mitsuru Sato | 1986-12-16 |
| 4623933 | Video camera gain control circuit | Ryuji Shiono, Tsutomu Nimura, Toshiaki Isogawa, Mitsuru Sato | 1986-11-18 |
| 4589021 | Gamma compensating circuit | Ryuji Shiono, Tsutomu Niimura, Toshiaki Isogawa, Mitsuru Sato | 1986-05-13 |