Schulumberger Technology Corporation
5Patents
2Active
5Granted
36Portfolio score
Filing activity: Nov 27, 1990 → Jul 1, 2016 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6938689B2 | Communicating with a tool | Mechanical Engineering; Lighting; Heating | 109 | Expired |
| US5131470A | Shock energy absorber including collapsible energy absorbing element and break up of tensile connection | Fixed Constructions | 40 | Expired |
| US6715570B1 | Two stage downhole drilling fluid filter | Fixed Constructions | 14 | Expired |
| US8474526B2 | Screen and method having a partial screen wrap | Human Necessities | 3 | Active |
| US11035223B2 | Method and system for detection of objects in a well reflecting hydraulic signal | Physics | 3 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.