Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7020301 | Loudspeaker | Satoshi Koura, Takashi Suzuki, Keiji Ishikawa | 2006-03-28 |
| 6219433 | Wax, copper foil flexible wire with wax and speakers using this flexible wire | Tamie Oyanagi | 2001-04-17 |
| 6115479 | Wax, copper foil flexible wire with wax and speakers using this flexible wire | Tamie Oyanagi | 2000-09-05 |