Thorn EMI
16Patents
0Active
16Granted
30Portfolio score
Filing activity: Dec 1, 1978 → Sep 2, 1988
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4354964A | Cermet materials | Electricity | 45 | Expired |
| US4585972A | Discharge lamp arc tubes | Chemistry; Metallurgy | 29 | Expired |
| US4396863A | Synthetic willemite phosphors and fluorescent lamp containing the same | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5047757A | Method of addressing a ferroelectric liquid crystal display | Physics | 10 | Expired |
| USD273999S | Fluorescent lamp | General | 9 | Expired |
| USD273809S | Fluorescent lamp | General | 8 | Expired |
| US4247798A | Mercury-metal halide discharge lamp | Electricity | 7 | Expired |
| US4613787A | Lamps filament supports for tungsten halogen incandescent | Electricity | 5 | Expired |
| US4384235A | Linear filament assembly with refractory insulating support rod for halogen lamp | Electricity | 4 | Expired |
| US4446048A | Luminescent materials | Electricity | 4 | Expired |
| US4330629A | Heat-resistant sealing materials | Chemistry; Metallurgy | 3 | Expired |
| US4355349A | Lighting unit | Performing Operations; Transporting | 2 | Expired |
| US4293801A | Cathode ray tube assemblies | Electricity | 1 | Expired |
| US4310782A | Lamp filament support | Electricity | 1 | Expired |
| USRE30831E | Electric discharge devices | General | 0 | Expired |
| US4330789A | Electrostatic printing apparatus including an electron beam tube | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.