Leon Van Den Steen

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GD Rijswijk, NL

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for radially expanding a tubular element
- Patent number 9,303,458
- Issue date Apr 5, 2016
- Shell Oil Company
- Leon Van Den Steen
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of determining drill string stiffness
- Patent number 6,327,539
- Issue date Dec 4, 2001
- Shell Oil Company
- Wouter Johannes Gregorius Keultjes
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drilling assembly with reduced stick-slip tendency
- Patent number 6,166,654
- Issue date Dec 26, 2000
- Shell Oil Company
- Leon Van Den Steen
- E21 - EARTH DRILLING MINING
Information Patent Grant
Device for controlling weight on bit of a drilling assembly
- Patent number 5,806,611
- Issue date Sep 15, 1998
- Shell Oil Company
- Leon Van Den Steen
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND SYSTEM FOR RADIALLY EXPANDING A TUBULAR ELEMENT
- Publication number 20130239643
- Publication date Sep 19, 2013
- Leon Van Den Steen
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...