Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853765 | Sequential scanning converter with frame comb filter and freeze frame feature | Kenji Katsumata, Takaaki Matono, Shigeru Hirahata, Isao Nakagawa, Kazuo Ishikura +1 more | 1989-08-01 |
| 4811092 | Movement detector for composite color television signals | Masahiko Achiha, Kazuo Ishikura, Shobu Saito, Kenji Katsumata | 1989-03-07 |