Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5949894 | Adaptive audio systems and sound reproduction systems | Philip Nelson, Hareo Hamada | 1999-09-07 |
| 5862227 | Sound recording and reproduction systems | Ole Kirkeby, Hareo Hamada, Philip Nelson | 1999-01-19 |