EUROCOPTER
373Patents
187Active
373Granted
52Portfolio score
Filing activity: Dec 13, 1995 → Mar 13, 2014 · 135 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6260793A | Convertible aircraft with tilting rotors | Performing Operations; Transporting | 127 | Expired |
| US6276633A | Convertible aircraft with tilting rotors | Performing Operations; Transporting | 100 | Expired |
| US6607161B1 | Convertible aircraft with tilting rotors | Emerging Cross-Sectional Technologies | 93 | Expired |
| US6031214A | Device for heating an aerofoil | Electricity | 67 | Expired |
| US8393519B2 | Method of assembling metal parts by friction welding, with the welding temperature being controlled using thermally conductive elements | Performing Operations; Transporting | 63 | Active |
| US5947418A | Device for heating an aerofoil | Performing Operations; Transporting | 62 | Expired |
| US6338455B1 | Heating device with resistive elements for an aerodynamic profile | Electricity | 55 | Expired |
| US6255584A | Shielded bundle of electrical conductors and process for producing it | Emerging Cross-Sectional Technologies | 48 | Expired |
| US6032899A | Blade pitch locking device for a main rotor of a rotary-wing aircraft | Performing Operations; Transporting | 47 | Expired |
| US6000911A | Blade with swept-back tip for the rotary wings of an aircraft | Emerging Cross-Sectional Technologies | 46 | Expired |
| US5971323A | Resistive elements for heating an aerofoil, and device for heating an aerofoil incorporating such elements | Performing Operations; Transporting | 44 | Expired |
| US8170728B2 | Rotorcraft control system | Physics | 40 | Active |
| US6045090A | Device for reducing the vibrations generated by a lift rotor of a rotary-wing aircraft | Emerging Cross-Sectional Technologies | 39 | Expired |
| US8181901B2 | Fast hybrid helicopter with long range and proportional drive to the rotor and the propeller | Performing Operations; Transporting | 38 | Active |
| US7720582B2 | Active suspension method and apparatus for a rotary wing aircraft | Performing Operations; Transporting | 36 | Active |
| US7791529B2 | System for estimating the speed of an aircraft, and an application thereof to detecting obstacles | Physics | 33 | Active |
| US6034531A | Monitoring of the wear of sliding electrical contacts and its application to the state-dependent and/or predictive maintenance of a device having sliding electrical contacts | Electricity | 32 | Expired |
| US8052094B2 | Fast hybrid helicopter with long range with longitudinal trim control | Performing Operations; Transporting | 32 | Active |
| US6712313B2 | Constant velocity drive rotary-wing aircraft rotor with torque splitting differential | Performing Operations; Transporting | 31 | Expired |
| US7188802B2 | Convertible aircraft provided with two tilt fans on either side of the fuselage, and with a non-tilting fan inserted in the fuselage | Performing Operations; Transporting | 31 | Expired |
| US6219597A | Process and device for aiding the maintenance of a complex system, especially an aircraft | Performing Operations; Transporting | 30 | Expired |
| US6036442A | Device for folding of a helicopter rotor blade | Performing Operations; Transporting | 29 | Expired |
| US6279704A | Device for reducing the vibration generated on the structure of a rotary-wing aircraft | Performing Operations; Transporting | 28 | Expired |
| US8113460B2 | Fast hybrid helicopter with long range and an optimized lift rotor | Performing Operations; Transporting | 26 | Active |
| US6195598A | Power margin indicator for a rotary-wing aircraft, especially a helicopter | Physics | 26 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.