| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 8 | |
| #2 | EPO (European Patent Office) | 7 | |
| #3 | Australia | 5 | |
| #4 | United States | 5 | |
| #5 | WIPO (World Intellectual Property Organization) | 5 | |
| #6 | Canada | 3 | |
| #7 | Denmark | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Telecommunications | |
| #3 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Loudspeakers and microphones | |
| #2 | Telephonic communication | |
| #3 | Magnets and transformers |
| # | Name | Total Patents |
|---|---|---|
| #1 | Salvage Richard James | 11 |
| #2 | Harrington Steven John | 10 |
| #3 | Wilton Raymond John | 8 |
| #4 | Powell Derek William | 5 |
| #5 | Ewens Stuart Christopher | 3 |
| #6 | Salvage Richard J | 2 |
| #7 | Ewens Stuart C | 2 |
| #8 | Edington Allan | 2 |
| #9 | Powell Derek W | 2 |
| #10 | Harrington Steven J | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB9804905D0 | Telephone interface device | |
| GB9511232D0 | Electromagnetic acoustic transducers | |
| US5647013A | Electroacoustic transducer | |
| GB9401144D0 | Headsets | |
| GB9225650D0 | An electroacoustic transducer | |
| GB9222677D0 | Electroacoustic transducer | |
| GB9121522D0 | Transducers | |
| GB8928899D0 | Coil assemblies | |
| US4473722A | Electroacoustic transducers | |
| DK237482A | Electroacustic transducer | |
| EP0094992A1 | Electroacoustic transducers | |
| GB2095510A | Electroacoustic transducers |