Assignee
DIAMANT BOART SA
BE18 patents
Top patents by PatentIndex Score
US4589504AMay 20, 1986
Well bore enlarger
DIAMANT BOART SA132 citations96
US4418770ADec 6, 1983
Process for retrieving a coring barrel comprising two tubes and retrieving device for such a process
DIAMANT BOART SA54 citations90
US4718398AJan 12, 1988
Circular saw for stony materials
DIAMANT BOART SA36 citations89
US4428602AJan 31, 1984
Inner tube element for a double tube coring apparatus and process for the manufacture of this tube element
DIAMANT BOART SA29 citations87
US6164272ADec 26, 2000
Manual tile cutter
DIAMANT BOART SA48 citations81
US4832138AMay 23, 1989
Device to control the locking of a boring corer
DIAMANT BOART SA51 citations81
US4729433AMar 8, 1988
Safety valve for oil-wells and installation tool for the valve
DIAMANT BOART SA24 citations81
US4187919AFeb 12, 1980
Cable-type core barrel
DIAMANT BOART SA22 citations80
US4569710AFeb 11, 1986
Process for manufacturing the inner tube element for a double tube coring apparatus
DIAMANT BOART SA24 citations78
US4986035AJan 22, 1991
Grinding wheel for the smoothing and polishing of glasses
DIAMANT BOART SA9 citations71
US4300643ANov 17, 1981
Double core barrel
DIAMANT BOART SA9 citations71
US4776399AOct 11, 1988
Oil-well safety-valve and tool for installing the same
DIAMANT BOART SA4 citations61
US4887676ADec 19, 1989
Device for closing a core barrel installed in a drilling rig
DIAMANT BOART SA6 citations60
US4856719AAug 15, 1989
Cutting arm
DIAMANT BOART SA3 citations60
US4765097AAug 23, 1988
Surface-dressing rollertool
DIAMANT BOART SA4 citations60
US6253756B1Jul 3, 2001
Accessory for cutting device
DIAMANT BOART SA2 citations56
US4776400AOct 11, 1988
Oil-well flap-type safety valve
DIAMANT BOART SA2 citations53
US4273200AJun 16, 1981
Drive mandrel for a drilling stem
DIAMANT BOART SA4 citations45