Computalog USA Inc.
14Patents
0Active
14Granted
34Portfolio score
Filing activity: Oct 28, 1993 → May 25, 2004
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6639210B2 | Geometrically optimized fast neutron detector | Physics | 86 | Expired |
| US6653839B2 | Electrical measurement apparatus and method for measuring an electrical characteristic of an earth formation | Physics | 49 | Expired |
| US6702010B2 | Apparatus and method for actuating arms | Mechanical Engineering; Lighting; Heating | 36 | Expired |
| US6376838B1 | Formation evaluation combination system for petrophysical well log analysis | Physics | 36 | Expired |
| US6495837B2 | Geometrically optimized fast neutron detector | Physics | 35 | Expired |
| US5374823A | Pulsed neutron decay tool for measuring gamma radiation energy spectra for fast neutron inelastic collisions and thermal neutron capture events | Physics | 29 | Expired |
| US5531112A | Fluid holdup tool for deviated wells | Physics | 28 | Expired |
| US5728978A | Acoustic isolator for acoustic well logging tool | Emerging Cross-Sectional Technologies | 27 | Expired |
| US7252143B2 | Method and apparatus for anchoring tool in borehole conduit | Fixed Constructions | 26 | Expired |
| US5631413A | Fluid holdup tool and flow meter for deviated wells | Fixed Constructions | 26 | Expired |
| US6377050B1 | LWD resistivity device with inner transmitters and outer receivers, and azimuthal sensitivity | Physics | 20 | Expired |
| US5907131A | Method and system for cement bond evaluation high acoustic velocity formations | Fixed Constructions | 12 | Expired |
| US6738720B2 | Apparatus and methods for measurement of density of materials using a neutron source and two spectrometers | Physics | 11 | Expired |
| US6815954B2 | Method and apparatus for full offset resistivity imaging for use in boreholes | Physics | 8 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.