Gerard Dreyfus

Person

91120 Palaiseau, FR

People

Patents Grantslast 30 patents

Information Patent Grant
Electret devices for measuring ionizing radiation
- Patent number 4,401,891
- Issue date Aug 30, 1983
- Jacques Lewiner
- G01 - MEASURING TESTING
Information Patent Grant
Devices for measuring parameters which can modify the charge of an...
- Patent number 4,355,235
- Issue date Oct 19, 1982
- Jacques Lewiner
- G01 - MEASURING TESTING
Information Patent Grant
Devices adapted to detect variations in magnetic flux notably circu...
- Patent number 4,285,022
- Issue date Aug 18, 1981
- Jacques Lewiner
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Devices for detecting the rupture of an electrical circuit element
- Patent number 4,263,589
- Issue date Apr 21, 1981
- Jacques Lewiner
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Detectors of parameters adapted to act on the force of attraction b...
- Patent number 4,227,086
- Issue date Oct 7, 1980
- Gerard Dreyfus
- G01 - MEASURING TESTING
Information Patent Grant
Relay-like control devices, to control device matrixes and to circu...
- Patent number 4,206,369
- Issue date Jun 3, 1980
- Agence Nationale de Valorisation de la Recherche and Etat Francais
- Jacques Lewiner
- G02 - OPTICS
Information Patent Grant
Control devices of the relay type
- Patent number 4,194,189
- Issue date Mar 18, 1980
- Agence Nationale de Valorisation de la Recherche (ANVAR)
- Jacques Lewiner
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Thin structures having a piezoelectric effect, devices equipped wit...
- Patent number 4,093,884
- Issue date Jun 6, 1978
- Agence Nationale de Valorisation de la Recherche (ANVAR)
- Gerard Dreyfus
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Control devices of the relay type
- Patent number 4,078,183
- Issue date Mar 7, 1978
- Agence Nationale de Valorisation de la Recherche (ANVAR)
- Jacques Lewiner
- G02 - OPTICS
Information Patent Grant
Device for measuring quantities of electric charges or similar elec...
- Patent number 4,064,539
- Issue date Dec 20, 1977
- Agence Nationale de Valorisation de la Recherche
- Jacques Lewiner
- G11 - INFORMATION STORAGE
Information Patent Grant
Electrometer
- Patent number 3,997,839
- Issue date Dec 14, 1976
- Agence Nationale de Valorisation de la Recherche (ANVAR)
- Gerard Dreyfus
- G01 - MEASURING TESTING

Gerard Dreyfus

Person

Patents Grantslast 30 patents

Electret devices for measuring ionizing radiation

Devices for measuring parameters which can modify the charge of an...

Devices adapted to detect variations in magnetic flux notably circu...

Devices for detecting the rupture of an electrical circuit element

Detectors of parameters adapted to act on the force of attraction b...

Relay-like control devices, to control device matrixes and to circu...

Control devices of the relay type

Thin structures having a piezoelectric effect, devices equipped wit...

Control devices of the relay type

Device for measuring quantities of electric charges or similar elec...

Electrometer