Inventor · Paris, FR

Eric Donzier

36Patents
13h-index
40Co-inventors
81Inventor score

Filing activity: May 25, 1994 → Jul 27, 2022

Most-cited inventions

PatentTitleAreaCited byStatus
US7673679B2 Protective barriers for small devices Fixed Constructions 138 Expired
US5736650A Venturi flow meter for measurement in a fluid flow passage Fixed Constructions 58 Expired
US5956132A Method and apparatus for optically discriminating between the phases of a three-phase fluid Fixed Constructions 50 Expired
US7434457B2 Fluid property sensors Physics 46 Expired
US8931347B2 Fluid pressure sensor and measurement probe Performing Operations; Transporting 37 Active
US7152466B2 Methods and apparatus for rapidly measuring pressure in earth formations Fixed Constructions 27 Expired
US7874199B2 Density and viscosity sensor Physics 23 Active
US7958772B2 Density and viscosity sensor Physics 21 Expired
US5509312A Diaphragm pressure sensor including anti-stock protection means and gradiomanometer incorporating such a sensor Physics 19 Expired
US8061219B2 Flow restriction insert for differential pressure measurement Physics 18 Active
US9952192B2 Probe, sonde and method for producing signals indicative of local phase composition of a fluid Physics 17 Active
US9863244B2 Downhole fluid properties analysis probe, tool and method Physics 14 Active
US6966228B2 Resonator-type microelectronic pressure sensor that withstands high pressures Physics 14 Expired
US10527751B2 Downhole fluid properties optical analysis probe having a removable optical tip Physics 13 Active
US10472951B2 Downhole acoustic transducer, downhole probe and tool comprising such a transducer Physics 13 Active
US10294771B2 Production logging tool and downhole fluid analysis probes deploying method, in particular for deviated and horizontal hydrocarbon well Fixed Constructions 9 Active
US9651710B2 Downhole fluid properties analysis device and tools comprising such a device Physics 3 Active
US11352839B2 Production logging tool and downhole fluid analysis probes deploying method Fixed Constructions 2 Active
US8943900B2 Method and apparatus for differential pressure measurement Physics 1 Active
US9719904B2 Density and viscosity sensor and measuring method Physics 1 Active
US10323512B2 System and method for downhole inorganic scale monitoring and intervention in a production well Fixed Constructions 1 Active
US10774639B2 Downhole local solid particles counting probe, production logging tool comprising the same and sand entry investigation method for hydrocarbon wells Physics 1 Active
US10323513B2 System and method for downhole organic scale monitoring and intervention in a production well Fixed Constructions 1 Active
US9371937B2 Micro-valve and micro-fluidic device using such Emerging Cross-Sectional Technologies 1 Active
US9777555B2 Predictive flow assurance assessment method and system Fixed Constructions 1 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.