Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830404 | Input pen | — | 2004-12-14 |
| 6707451 | Input pen | — | 2004-03-16 |
| 6361232 | Input pen | Kazuhiko Ono | 2002-03-26 |
| D389131 | Input pen | — | 1998-01-13 |
| 5564850 | Input pen with attached writing implement | — | 1996-10-15 |
| 5171097 | Mechanical pencil with lead-feeding device operable by forward shake | Kiyoshi Umeda | 1992-12-15 |