Issued Patents All Time
Showing 51–71 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4692762 | Remote control coded devices | Claude Hennion | 1987-09-08 |
| 4678897 | Processes and devices for reading magnetic access control cards or similar | Claude Hennion | 1987-07-07 |
| 4673885 | Devices for reading the quantities of electrical charges borne by a dielectric | Georges Charpak, Elie Pollak | 1987-06-16 |
| 4672376 | Portable control code transmitter with delayed code neutralization | Claude Hennion | 1987-06-09 |
| 4626729 | Electroacoustic piezoelectric transducers | Claude Hennion | 1986-12-02 |
| RE32180 | Composite sheets constituting electromechanical transducers and transducers equipped with such sheets | Claude Hennion | 1986-06-10 |
| 4567530 | Read-out devices of electric charge distributions on dielectric surfaces | Georges Charpak | 1986-01-28 |
| 4553089 | Devices designed to measure locally the electric charges carried by dielectrics | Georges Charpak | 1985-11-12 |
| 4546257 | Devices for measuring ionizing radiations | Didier Perino, Claude Hennion | 1985-10-08 |
| 4485381 | Coded electronic locking devices | Claude Hennion, Gilbert Berthier | 1984-11-27 |
| 4441134 | Circuit breakers sensitive to leakage currents | Didier Perino, Claude Hennion | 1984-04-03 |
| 4401891 | Electret devices for measuring ionizing radiation | Gerard Dreyfus, Didier Perino | 1983-08-30 |
| 4359726 | Composite sheets constituting electromechanical transducers and transducers equipped with such sheets | Claude Hennion | 1982-11-16 |
| 4355235 | Devices for measuring parameters which can modify the charge of an electret | Gerard Dreyfus, Didier Perino | 1982-10-19 |
| 4340925 | Safety locks | Claude Hennion | 1982-07-20 |
| 4285022 | Devices adapted to detect variations in magnetic flux notably circuit breakers | Gerard Dreyfus, Didier Perino | 1981-08-18 |
| 4263589 | Devices for detecting the rupture of an electrical circuit element | Gerard Dreyfus, Didier Perino | 1981-04-21 |
| 4250415 | Electromechanical transducers | Claude Hennion | 1981-02-10 |
| 4227086 | Detectors of parameters adapted to act on the force of attraction between an electret and an electrode | Gerard Dreyfus, Didier Perino | 1980-10-07 |
| 4206369 | Relay-like control devices, to control device matrixes and to circuits for actuating such devices | Gerard Dreyfus, Jean-Yves Le Traon | 1980-06-03 |
| 4194189 | Control devices of the relay type | Gerard Dreyfus, Didier Perino | 1980-03-18 |