Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5091877 | Data processing apparatus | Yoshikazu Itoh | 1992-02-25 |
| 4905080 | Apparatus for collecting television channel data and market research data | Fumio Watanabe, Yoshikazu Itoh | 1990-02-27 |