Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5337157 | Copy guard processing detecting apparatus | — | 1994-08-09 |
| 5032909 | Image enhancer which utilizes a lowpass filter after an outline extracting circuit | Mitsuru Sato, Toshiaki Isogawa, Toshizumi Ando | 1991-07-16 |