Gilles Pelfrene

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Fontainebleau, FR

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Patents Grantslast 30 patents

Information Patent Grant
Drill bit having a weight on bit reducing effect
- Patent number 11,802,444
- Issue date Oct 31, 2023
- Varel Europe S.A.S.
- Gilles Pelfrene
- E21 - EARTH DRILLING MINING
Information Patent Grant
Passively induced forced vibration rock drilling system
- Patent number 10,378,281
- Issue date Aug 13, 2019
- Varel Europe S.A.S.
- Gilles Pelfrene
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DRILL BIT HAVING A WEIGHT ON BIT REDUCING EFFECT
- Publication number 20220220809
- Publication date Jul 14, 2022
- Varel Europe S.A.S.
- GILLES PELFRENE
- E21 - EARTH DRILLING MINING
Information Patent Application
Optimized Repair of a Drill Bit
- Publication number 20210291276
- Publication date Sep 23, 2021
- VAREL EUROPE (Société par Actions Simplifiée)
- GILLES PELFRENE
- B22 - CASTING POWDER METALLURGY
Information Patent Application
PASSIVELY INDUCED FORCED VIBRATION ROCK DRILLING SYSTEM
- Publication number 20170356249
- Publication date Dec 14, 2017
- Varel Europe S.A.S.
- Gilles Pelfrene
- E21 - EARTH DRILLING MINING
Information Patent Application
VARIABLE FREQUENCY IMPACT TEST
- Publication number 20130239652
- Publication date Sep 19, 2013
- Varel Europe S.A.S.
- Gilles Pelfrene
- G01 - MEASURING TESTING