Entreprise de Recherches et D'Activities Petrolieres Elf

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Paris, FR

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Patents Grantslast 30 patents

Information Patent Grant
Safety plug for sealing-off the tubing of a producing oil or gas well
- Patent number 3,954,138
- Issue date May 4, 1976
- Entreprise de Recherches et D'Activities Petrolieres Elf
- Hubert Miffre
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and device for rapid chromatographic separation
- Patent number 3,954,608
- Issue date May 4, 1976
- Entreprise de Recherches et D'Activities Petrolieres Elf
- Patrick Valentin
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Device for automatic analysis mass spectrometry
- Patent number 3,943,363
- Issue date Mar 9, 1976
- Entreprise de Recherches et D'Activities Petrolieres Elf
- Jean-Claude Amblard
- G01 - MEASURING TESTING

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