Patent US2755431A successfully refreshed from Google Patents.
US2755431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Logging while drilling
Assignee: Individual
•
Filing: 1952-06-27
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Granted: 1956-07-17
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Expires: 1972-06-27
Abstract
No abstract record available.
Inventors
- 👤 Serge A Scherbatskoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:03
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/20; G01V3/22; E; E21; E21B; E21B47/00; E21B47/12; E21B47/14; E21B47/18; E21B47/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A METHOD OF LOGGING BOREHOLES COMPRISING: MEASURING AT GIVEN DEPTH WITHIN A BOREHOLE VALUES OF A CHARACTERISTIC OF THE FORMATION ADJACENT THE BOREHOLE AT SUCH DEPTHS; PRODUCING A SIGNAL THEREIN IN RESPONSE TO THE MEASUREMENT THUS OBTAINED AND HAVING A FORM REPRESENTATIVES OF THE SAID VALUES OF SAID CHARACTERISTIC; AND IGNITING SEPARATE EXPLOSIVE CHARGES WITHIN SAID BORE HOLE IN THE VICINITY
Claim 2
Independent Claim
61 words
A METHOD OF LOGGING BOREHOLES COMPRISING: MEASURING AT GIVEN DEPTH WITHIN A BOREHOLE VALUES OF A CHARACTERISTIC OF THE FORMATION ADJACENT THE BOREHOLE AT SUCH DEPTHS; PRODUCING A SIGNAL THEREIN IN RESPONSE TO THE MEASUREMENT THUS OBTAINED AND HAVING A FORM REPRESENTATIVES OF THE SAID VALUES OF SAID CHARACTERISTIC; AND IGNITING SEPARATE EXPLOSIVE CHARGES WITHIN SAID BORE HOLE IN THE VICINITY
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |