Inventor · Tokyo, JP

Stephane Vannuffelen

33Patents
11h-index
68Co-inventors
78Inventor score

Filing activity: Aug 20, 2002 → May 24, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
US7720323B2 High-temperature downhole devices Fixed Constructions 45 Active
US7379180B2 Method and apparatus for downhole spectral analysis of fluids Physics 43 Active
US7336356B2 Method and apparatus for downhole spectral analysis of fluids Physics 29 Expired
US7609380B2 Real-time calibration for downhole spectrometer Physics 15 Active
US7515774B2 Methods and apparatus for single fiber optical telemetry Fixed Constructions 15 Expired
US7937223B2 Downhole fluid analysis Fixed Constructions 15 Active
US7687770B2 Methods and apparatus for multi dimension fluorescence spectrum measurement downhole Physics 14 Active
US7933018B2 Spectral imaging for downhole fluid characterization Physics 13 Expired
US7511813B2 Downhole spectral analysis tool Physics 13 Active
US7929812B2 Methods and apparatus for single fiber optical telemetry Fixed Constructions 12 Active
US7687769B2 Methods and apparatus for multi dimension fluorescence spectrum measurement and correlations downhole Physics 11 Active
US8082780B2 Methods and apparatus for decreasing a density of a downhole fluid Physics 9 Active
US7520160B1 Electrochemical sensor Physics 7 Active
US7644611B2 Downhole fluid analysis for production logging Fixed Constructions 5 Active
US7675030B2 Logging system and method for in-situ fluids sensing through optical fiber with attenuation compensation Physics 3 Active
US6606915B2 Method for measuring oscillation frequency of a fluid jet in a fluidic oscillator Physics 3 Expired
US8908166B2 Methods and apparatus for downhole fluid analysis Fixed Constructions 3 Active
US9790786B2 Backbone network architecture and network management scheme for downhole wireless communications system Electricity 2 Active
US10900352B2 Wireless acoustic communication apparatus and related methods Physics 2 Active
US9441479B2 Mechanical filter for acoustic telemetry repeater Fixed Constructions 2 Active
US11149544B2 Combined telemetry and control system for subsea applications Fixed Constructions 2 Active
US11603740B2 Method for real-time interpretation of pressure transient test Physics 1 Active
US10711601B2 System and method to automate data acquisition in a wireless telemetry system Fixed Constructions 1 Active
US10337321B1 System and method to automate data acquisition in a wireless telemetry system Fixed Constructions 1 Active
US7750302B2 Method and apparatus for detecting naphthenic acids Fixed Constructions 1 Active

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