Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7169998 | Sound generation device and sound generation program | Koji Kondo | 2007-01-30 |
| 5269065 | Compass including means for displaying constellation data | — | 1993-12-14 |
| 5216816 | Compass | — | 1993-06-08 |
| 4835716 | Compact measuring apparatus capable of measuring two different data with a single pressure sensor | Nobuo Tamaki, Masayoshi Okuyama, Toru Yamada | 1989-05-30 |