Computalog Limited
8Patents
0Active
8Granted
28Portfolio score
Filing activity: Apr 13, 1990 → Aug 27, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6192748A | Dynamic orienting reference system for directional drilling | Fixed Constructions | 247 | Expired |
| US6742602B2 | Perforating gun firing head with vented block for holding detonator | Mechanical Engineering; Lighting; Heating | 74 | Expired |
| US6412614B1 | Downhole shock absorber | Fixed Constructions | 42 | Expired |
| US6002643A | Pulser | Fixed Constructions | 37 | Expired |
| US5078650A | Universal joint arrangement for downhole tools | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US5067874A | Compressive seal and pressure control arrangements for downhole tools | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5934378A | Centralizers for a downhole tool | Fixed Constructions | 18 | Expired |
| US5836388A | Flexible joint for downhole tools | Fixed Constructions | 6 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.