Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12155996 | Electrostatic transducer and diaphragm | Benjamin Martin Lisle, James Hedges, David Rhys LEWIS | 2024-11-26 |
| 11825265 | Electrostatic transducer and diaphragm | Benjamin Martin Lisle, James Hedges, David Rhys LEWIS | 2023-11-21 |
| 8494208 | Inertial vibration exciter | — | 2013-07-23 |
| 7120263 | Bending wave acoustic radiator | Henry Azima, Martin Colloms, Graham Bank, Charles Bream | 2006-10-10 |
| 6610237 | Method of making a loudspeaker drive unit having a resiliently suspended panel-form member | Henry Azima, Graham Bank, Kieron Dunk, Neil Owen | 2003-08-26 |
| 6397972 | Loudspeakers | Graham Bank | 2002-06-04 |