Computalog Research, Inc.
11Patents
0Active
11Granted
29Portfolio score
Filing activity: Feb 18, 1992 → Nov 19, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5377160A | Transmitter and receiver to radially scan the cementing conditions in cased wells | Physics | 49 | Expired |
| US5900627A | Formation density measurement utilizing pulse neutrons | Physics | 45 | Expired |
| US6050141A | Method and apparatus for acoustic logging of fluid density and wet cement plugs in boreholes | Physics | 26 | Expired |
| US6150655A | Inferential measurement of photoelectric absorption cross-section of geologic formations from neutron-induced, gamma-ray spectroscopy | Physics | 17 | Expired |
| US6028307A | Data acquisition and reduction method for multi-component flow | Physics | 15 | Expired |
| US5299359A | Method and system for measurement of internal tube dimensions within a wellbore | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5698982A | Method and system for skin effect correction in a multiple transmit frequency induction logging system | Physics | 13 | Expired |
| US6538958B1 | Method and apparatus for acoustics logging of fluid density and wet cement plugs in boreholes | Physics | 11 | Expired |
| US6189383A | Method and apparatus for acoustic logging of fluid density and wet cement plugs in boreholes | Physics | 9 | Expired |
| US5500597A | Multiple transmit frequency induction logging system with closed loop conversion circuitry for phase and gain variation elimination | Physics | 6 | Expired |
| US5153431A | Well logging radioactive detector assembly | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.