Jean Leyer

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Valenciennes, FR

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Patents Grantslast 30 patents

Information Patent Grant
Low alloy steel with a high yield strength and high sulphide stress...
- Patent number 9,394,594
- Issue date Jul 19, 2016
- Vallourec Oil and Gas France
- Christoph Bosch
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Steel compositions for special uses
- Patent number 9,005,520
- Issue date Apr 14, 2015
- V & M France
- Daniel Petelot
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

Information Patent Application
LOW ALLOY STEEL WITH A HIGH YIELD STRENGTH AND HIGH SULPHIDE STRESS...
- Publication number 20110315276
- Publication date Dec 29, 2011
- VALLOUREC MANNESMANN OIL & GAS FRANCE
- Christoph Bosch
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
STEEL COMPOSITIONS FOR SPECIAL USES
- Publication number 20100307430
- Publication date Dec 9, 2010
- V & M France
- Daniel Petelot
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...