| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 8 | |
| #2 | EPO (European Patent Office) | 4 | |
| #3 | WIPO (World Intellectual Property Organization) | 4 | |
| #4 | Canada | 2 | |
| #5 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Basic communication technologies | |
| #3 | Electrical machinery and energy | |
| #4 | Measurement | |
| #5 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rhodes John David | 4 |
| #2 | Rhodes John D | 2 |
| #3 | Rhodes J David | 2 |
| #4 | Mobbs Christopher I | 2 |
| #5 | Sleigh Philip David | 2 |
| #6 | Mobbs Christopher Ian | 2 |
| #7 | Rhodes David J Filtronic Compo | 1 |
| #8 | Poppleton David Martin | 1 |
| #9 | Poppleton David M | 1 |
| #10 | Mobbs Christopher I Filtronic | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB9518567D0 | High pass filters | |
| GB9304764D0 | Automatic tuned filters | |
| GB9217470D0 | Microwave filter | |
| GB9208237D0 | Frequency multiplexer | |
| GB9208236D0 | Measuring standing wave ratios | |
| GB9114969D0 | Inline folded microwave filter | |
| GB9114971D0 | Triple mode microwave filter | |
| GB9114970D0 | Microwave filter | |
| EP0284193A2 | Oscillator | |
| US4636913A | Temperature compensated capacitor | |
| EP0140462A2 | Temperature compensated capacitor |