Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D377044 | Projection unit for an electronic calculator | — | 1996-12-31 |
| D364890 | Electronic calculator | Toru Suzuki | 1995-12-05 |
| D349918 | Electronic calculator | Osamu Tsuchida, Yuichi Onumata | 1994-08-23 |
| D345753 | Electronic keyboard musical instrument | — | 1994-04-05 |