ELECTRICITE DE FRANCE
🏢 View company profile →252Patents
161Active
252Granted
53Portfolio score
Filing activity: Nov 30, 1973 → Dec 19, 2023 · 18 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9293757B2 | Metal-air accumulator with air electrode protection device | Emerging Cross-Sectional Technologies | 1,059 | Active |
| US4771185A | Power adapter for electrical installations and especially domestic installations | Emerging Cross-Sectional Technologies | 85 | Expired |
| US5497142A | Directional separator-coupler circuit for medium-frequency carrier currents on a low-voltage electrical line | Electricity | 75 | Expired |
| US4121393A | Device for protecting a structure against the effects of high horizontal dynamic stresses | Emerging Cross-Sectional Technologies | 39 | Expired |
| US4888495A | Power adapter for electrical installations and especially domestic installations with so-called carrier current control | Emerging Cross-Sectional Technologies | 35 | Expired |
| US5451755A | Self-contained device for self-service delivery of electrical energy | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4928152A | Process and device for optically measuring the distance and the velocity of a target | Physics | 31 | Expired |
| US4688627A | Detecting leaks in a heat exchanger in operation | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4650578A | Centrifuging mixture separator | Performing Operations; Transporting | 21 | Expired |
| US4673781A | Electromagnetic induction device for heating metal elements | Electricity | 19 | Expired |
| USD402379S | Pylon | General | 19 | Expired |
| US4542849A | Method and apparatus for regulating a heating installation in premises including a plurality of heat generators | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4493917A | Blend of polymers, its preparation and its application to the manufacture of components of electrochemical reactors | Chemistry; Metallurgy | 16 | Expired |
| US4786219A | Method and apparatus for machining the wall of a cylindrical tube by milling a groove therein | Emerging Cross-Sectional Technologies | 16 | Expired |
| USD381096S | Pylon | General | 16 | Expired |
| US6217733A | Bipolar membrane and method for fabricating such bipolar membrane | Chemistry; Metallurgy | 14 | Expired |
| US4557667A | Electromagnetic pump | Electricity | 13 | Expired |
| US5929624A | Method and apparatus for detecting electric cables | Physics | 13 | Expired |
| US3936648A | Flame monitoring apparatus | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4689759A | Process and installation for the analysis and retrieval of a sampling and interpolation signal | Electricity | 13 | Expired |
| US4881072A | Device for remote metering | Physics | 11 | Expired |
| US4573628A | Method for tapping into tubing under a controlled atmosphere, in particular for tubing in a nuclear power station | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4542796A | Process and device for drilling the soil | Fixed Constructions | 10 | Expired |
| US4907878A | Device for discriminating fluids having different refractive indices and device for measuring the voluminal fraction of at least one fluid of a current of non-mixible fluids incorporating the discrimination device | Physics | 9 | Expired |
| US5443326A | Method and device for providing an aquatic passage in running water | Fixed Constructions | 9 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.