Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4547896 | Printed matter identifying apparatus | Ko Ohtombe, Tsuyoshi Ishida, Kenji Nagahashi | 1985-10-15 |
| 4490846 | Pattern discriminating apparatus | Tsuyoshi Ishida, Kazuaki Naruse | 1984-12-25 |