Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4901351 | Video signal scramble system | Masatoshi Tanaka, Wataru Kuroiwa, Akinori Masuko, Jyoji Maeda, Shouji Uehara | 1990-02-13 |
| 4829589 | Anti-tapping system | — | 1989-05-09 |
| 4686564 | Communication data processing device of cable television system | Akinori Masuko, Wataru Kuroiwa, Shouji Uehara, Robert M. Rast, W. Sherwood Campbell | 1987-08-11 |