FILTRONIC PLC
11Patents
3Active
11Granted
36Portfolio score
Filing activity: Jul 19, 1999 → Apr 30, 2009 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7161434B2 | Amplifier | Electricity | 13 | Expired |
| US7382943B1 | Four arm linearised Mach Zehnder modulator | Physics | 13 | Active |
| US6414571B1 | Dual TM mode composite resonator | Electricity | 5 | Expired |
| US6359534B2 | Microwave resonator | Electricity | 5 | Expired |
| US7555174B2 | Coplanar waveguide line | Physics | 1 | Expired |
| US6448872B2 | Reflection-mode filter and method with a constant loss off-set | Electricity | 1 | Expired |
| US7956706B2 | Multiband filter having comb-line and ceramic resonators with different pass-bands propagating in different modes | Electricity | 1 | Active |
| US7330704B2 | Electrical signal pre-conditioning | Electricity | 1 | Expired |
| US7868356B2 | Compound semiconductor substrate for a field effect transistor | Electricity | 0 | Active |
| US7639077B2 | Method and apparatus for pre-conditioning an electrical signal | Electricity | 0 | Expired |
| US7538365B2 | Field effect transistor with aluminum and phosphorus etch stop layer | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.