GEC-Marconi Ltd.
171Patents
0Active
171Granted
43Portfolio score
Filing activity: Oct 31, 1985 → Aug 23, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5093567A | Helmet systems with eyepiece and eye position sensing means | Physics | 168 | Expired |
| US5054717A | Aircraft capture systems | Performing Operations; Transporting | 125 | Expired |
| US5442556A | Aircraft terrain and obstacle avoidance systems | Physics | 78 | Expired |
| US5164848A | Helmet mounted display | Physics | 74 | Expired |
| US5210404A | Optical sensor including a Bragg grating structure for enhanced sensitivity | Physics | 69 | Expired |
| US5459612A | Display system | Physics | 67 | Expired |
| US5229833A | Optical sensor | Physics | 64 | Expired |
| US4958895A | Optical waveguides | Emerging Cross-Sectional Technologies | 59 | Expired |
| US4969724A | Helmet supported optical systems with four reflections | Physics | 55 | Expired |
| US5341135A | Analogue-to-digital converters, digital-to-analogue converters, and digital modulators | Electricity | 50 | Expired |
| US4933555A | Thermal imager | Physics | 50 | Expired |
| US5406210A | Apparatus and method for testing bare dies with low contact resistance between the die and testing station | Physics | 49 | Expired |
| US5543968A | Helmet mounted display systems | Physics | 49 | Expired |
| US5192864A | Two dimensional display produced by one dimensional scanned emitters | Electricity | 48 | Expired |
| US5228877A | Field emission devices | Electricity | 48 | Expired |
| US5108027A | Flip chip solder bond structure for devices with gold based metallization | Electricity | 48 | Expired |
| US5127928A | Method for the manufacture of a waveguide mixer | Physics | 48 | Expired |
| US5434972A | Network for determining route through nodes by directing searching path signal arriving at one port of node to another port receiving free path signal | Physics | 47 | Expired |
| US5798488A | Acoustic sensor | Fixed Constructions | 46 | Expired |
| US4994794A | Methods and apparatus for displaying data | Physics | 44 | Expired |
| US5255075A | Optical sensor | Physics | 42 | Expired |
| US5942791A | Micromachined devices having microbridge structure | Electricity | 42 | Expired |
| US5184231A | Helmet systems | Physics | 42 | Expired |
| US5193103A | Digital phase locked loop circuit | Electricity | 41 | Expired |
| US4952809A | Imaging system | Electricity | 38 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.