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AGIP SPA
IT30 patents
Top patents by PatentIndex Score
US5690176ANov 25, 1997
Composition effective in removing asphaltenes
AGIP SPA22 citations90
US5191370AMar 2, 1993
Multi-section helicopter-borne rotatable beam, specially adapted to support range-finder cameras and television focusing cameras for stereophotogrammetric surveys
AGIP SPA37 citations88
US5844136ADec 1, 1998
Device for measuring the permeability of rock fragments
AGIP SPA25 citations84
US5511038AApr 23, 1996
Process and device for detecting seismic signals in order to obtain vertical seismic profiles during bore drilling operations
AGIP SPA34 citations83
US5390529AFeb 21, 1995
Method for determining heavy hydrocarbons in rock matrices and the apparatus for the purpose
AGIP SPA33 citations80
US4669843AJun 2, 1987
Rotatable heliborne beam for supporting metric photo-cameras suitable to industrial stereophotogrammetric surveys
AGIP SPA23 citations78
US6010163AJan 4, 2000
Threaded joint for connecting two pipes with a metal to metal seal
AGIP SPA18 citations77
US4607121AAug 19, 1986
Process for preparing alkaline metal salts of polyethoxycarboxylic acids
AGIP SPA12 citations71
US5438039AAug 1, 1995
Effective hydrocarbon blend for removing asphaltenes from oil wells
AGIP SPA12 citations70
US5382728AJan 17, 1995
Effective hydrocarbon blend for removing asphaltenes
AGIP SPA14 citations70
US4641960AFeb 10, 1987
Method for the stereophotogrammetric survey of large-dimension objects on sea and land
AGIP SPA10 citations69
US5678608AOct 21, 1997
Anti-seizure protection for joints, particularly suitable for the petroleum sector
AGIP SPA15 citations68
US5637806AJun 10, 1997
Procedure for evaluating the friction characteristics of a shouldered threaded connection
AGIP SPA14 citations68
US4859117AAug 22, 1989
Reversible mechanical coupling, particularly for tensional anchorages
AGIP SPA8 citations68
US4664558AMay 12, 1987
Reversible mechanical coupling for tensional anchorages
AGIP SPA8 citations68
US4652497AMar 24, 1987
Organosiloxane compositions for abrasion resistant and adhesion promoting protective coatings
AGIP SPA17 citations68
US5691475ANov 25, 1997
Method for measuring the propagation velocity of ultrasonic acoustic waves through rock fragments
AGIP SPA13 citations67
US5168477ADec 1, 1992
Method of and an apparatus for the ultrasonic identification of materials and equipments
AGIP SPA17 citations63
US5646092AJul 8, 1997
Pretreated clays, their preparation and use in formulation drilling muds not aggressive to layer clays
AGIP SPA5 citations61
US5895437AApr 20, 1999
Method for continuous updating in real time of bidimensional and tridimensional seismic images of a subsurface section using drilling well data
AGIP SPA12 citations60
US5571452ANov 5, 1996
Process for recovering and moving highly viscous petroleum products
AGIP SPA2 citations60
US4967842ANov 6, 1990
Sub surface safety valve block, particularly suitable for the risers of offshore platforms
AGIP SPA9 citations60
US5494320AFeb 27, 1996
Quick joint for rapid, tight-seal connection of pipes, particularly suitable for petroleum pipes
AGIP SPA15 citations59
US5351525AOct 4, 1994
Process for generating, by way of experimental tests, the capillary pressure curve in a porous medium
AGIP SPA8 citations58
US5186441AFeb 16, 1993
Internal centering device particularly suitable for connecting the ends of tubes
AGIP SPA8 citations58
US4644661AFeb 24, 1987
Signal for industrial surveys
AGIP SPA5 citations58
US5937949AAug 17, 1999
Process for the consolidation of sand
AGIP SPA2 citations50
US5934303AAug 10, 1999
Process for moving heavy crude oils with water having a high content of salts
AGIP SPA1 citations46
US4443395AApr 17, 1984
Method for preparing thin sections for the microscopic study of small fragments of rock or dust, using a plate containing cells
AGIP SPA4 citations45
US4645636AFeb 24, 1987
Measuring head for determining the pressure of fission gases released inside bars of nuclear fuel
AGIP SPA2 citations44