| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 5 | |
| #2 | United States | 4 | |
| #3 | Australia | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Geophysics | |
| #2 | Earth drilling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schlumberger Conrad | 5 |
| #2 | Conrad Schlumberger | 5 |
| Publication | Filing date | Title |
|---|---|---|
| US2015873A | Apparatus for sampling the rock in bore holes | |
| US1894328A | Electrical device for the determination of specific resistivity | |
| US1913293A | Electrical process for the geological investigation of the porous strata traversed by drill holes | |
| US1719786A | Method for the location of oil-bearing formation | |
| GB191411317A | Improved Process for Determining the Nature of the Subsoil. | |
| AU937813B | Process for determining the nature ofthe subsoil bythe aid of electricity |