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Robert Delwiche
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Brussels, BE
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Patents Grants
last 30 patents
Information
Patent Grant
Stabilizer-reamer for drill string
Patent number
10,323,462
Issue date
Jun 18, 2019
FASTIP SA
Robert Delwiche
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Bit for drilling wells and associated drilling method
Patent number
8,960,335
Issue date
Feb 24, 2015
Total SA
Abdelhakim Hahati
E21 - EARTH DRILLING MINING
Information
Patent Grant
Bladed drill bit with centrally distributed diamond cutters
Patent number
6,296,069
Issue date
Oct 2, 2001
Dresser Industries, Inc
Etienne Lamine
E21 - EARTH DRILLING MINING
Information
Patent Grant
Drilling tool with shock absorbers
Patent number
6,102,142
Issue date
Aug 15, 2000
Total,
Alain Besson
E21 - EARTH DRILLING MINING
Information
Patent Grant
Cutting edge for monobloc drilling tools
Patent number
5,823,277
Issue date
Oct 20, 1998
Total
Robert Delwiche
E21 - EARTH DRILLING MINING
Information
Patent Grant
Hardfacing with coated diamond particles
Patent number
5,755,298
Issue date
May 26, 1998
Dresser Industries, Inc.
James W. Langford
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Hardfacing with coated diamond particles
Patent number
5,755,299
Issue date
May 26, 1998
Dresser Industries, Inc.
James W. Langford
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Method and apparatus for reducing the vibration and whirling of dri...
Patent number
5,560,439
Issue date
Oct 1, 1996
Robert A. Delwiche
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
ROCK-CUTTING TOOL AND METHOD FOR MINE AND OIL DRILLING
Publication number
20230117211
Publication date
Apr 20, 2023
DIAROTECH S.A.
Robert Delwiche
E21 - EARTH DRILLING MINING
Information
Patent Application
Rock-Cutting Tool and Method for Mine and Oil Drilling
Publication number
20190249499
Publication date
Aug 15, 2019
DIAROTECH S.A.
Robert Delwiche
E21 - EARTH DRILLING MINING
Information
Patent Application
STABILIZER-REAMER FOR DRILL STRING
Publication number
20170198527
Publication date
Jul 13, 2017
DIAROTECH S.A.
Robert DELWICHE
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
BIT FOR DRILLING WELLS AND ASSOCIATED DRILLING METHOD
Publication number
20150159439
Publication date
Jun 11, 2015
TOTAL SA
Abdelhakim Hahati
E21 - EARTH DRILLING MINING
Information
Patent Application
BIT FOR DRILLING WELLS AND ASSOCIATED DRILLING METHOD
Publication number
20100133013
Publication date
Jun 3, 2010
TOTAL SA
Abdelhakim Hahati
E21 - EARTH DRILLING MINING