Geoservices
🏢 View company profile →16Patents
1Active
16Granted
35Portfolio score
Filing activity: Dec 22, 1977 → Dec 5, 2006 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5394141A | Method and apparatus for transmitting information between equipment at the bottom of a drilling or production operation and the surface | Fixed Constructions | 113 | Expired |
| US4684946A | Device for transmitting to the surface the signal from a transmitter located at a great depth | Physics | 79 | Expired |
| US5945923A | Device and method for transmitting information by electromagnetic waves | Fixed Constructions | 51 | Expired |
| US5163714A | Electronically-nonconducting system for the connection of metal tubular elements, especially suitable for use as an antenna framework located at great depth | Emerging Cross-Sectional Technologies | 30 | Expired |
| US7392138B2 | Method for determining the content of at least one given gas in a drilling mud, associated device and rig | Fixed Constructions | 29 | Expired |
| US4766442A | Antenna structure for use with a transmitter located at a great depth | Physics | 28 | Expired |
| US6404350B1 | Device for providing an electrically insulated connection between two metal elements | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US5090256A | Method and apparatus for sampling the gaseous content of a liquid | Physics | 23 | Expired |
| US4798805A | Apparatus and process for pyrolysis and analysis of samples containing organic matter | Emerging Cross-Sectional Technologies | 14 | Expired |
| US7669665B2 | Mandrel for introduction into a fluid circulation duct, and related production well | Mechanical Engineering; Lighting; Heating | 14 | Active |
| US7032444B2 | Module for extracting gas from an underground liquid and installation equipped therewith | Physics | 13 | Expired |
| US7652592B2 | Data transmission device | Fixed Constructions | 8 | Expired |
| US7114697B2 | Fast valve actuator and tool provided with same | Fixed Constructions | 6 | Expired |
| US4134294A | Device for simultaneously measuring various parameters of the drilling fluid | Fixed Constructions | 4 | Expired |
| US7520166B2 | Method for detecting hydrocarbons in geological strata | Physics | 2 | Expired |
| US7151465B2 | Method and apparatus for transmitting information between a salt-cavern and the surface of the ground | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.