Patent US3255353A successfully refreshed from Google Patents.
US3255353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for nuclear well logging while drilling
Assignee: Individual
•
Filing: 1962-12-21
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Granted: 1966-06-07
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Serge A Scherbatskoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:05
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A SYSTEM OF LOGGING-WHILE-DRILLING ADAPTED FOR LOGGING OF EARTH FORMATIONS BEYOND THE BOTTOM OF AN EARTH BORE HOLE, COMPRISING IN COMBINATION A DRILL STRING, A DRILL BIT, A NUCLEAR RADIATION SOURCE WITHIN SAID DRILL STRING FOR IRRADIATING THE HITHERTO UNDRILLED FORMATIONS LYING BENEATH SAID DRILL BIT, A DRIECTIONALLY SENSITIVE RADIATION DETECTOR WITHIN SAID DRILL STRING POSITIONED TO RESPOND PREFERENTIALLY TO GAMMA RAYS EMITTED FROM BELOW THE DRILL BIT AND DIRECTED UPWARDLY, AND MEANS FED BY SAID DETECTOR FOR TRANSMITTING TO A POINT EXTERNAL OF THE BORE HOLE INFORMATION DERIVED FROM THE OUTPUT OF SAID DETECTOR.
Claim 2
Independent Claim
95 words
A SYSTEM OF LOGGING-WHILE-DRILLING ADAPTED FOR LOGGING OF EARTH FORMATIONS BEYOND THE BOTTOM OF AN EARTH BORE HOLE, COMPRISING IN COMBINATION A DRILL STRING, A DRILL BIT, A NUCLEAR RADIATION SOURCE WITHIN SAID DRILL STRING FOR IRRADIATING THE HITHERTO UNDRILLED FORMATIONS LYING BENEATH SAID DRILL BIT, A DRIECTIONALLY SENSITIVE RADIATION DETECTOR WITHIN SAID DRILL STRING POSITIONED TO RESPOND PREFERENTIALLY TO GAMMA RAYS EMITTED FROM BELOW THE DRILL BIT AND DIRECTED UPWARDLY, AND MEANS FED BY SAID DETECTOR FOR TRANSMITTING TO A POINT EXTERNAL OF THE BORE HOLE INFORMATION DERIVED FROM THE OUTPUT OF SAID DETECTOR.
References Cited (Backward Citations)
US2349366A
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US2825044A
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US2978634A
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US2905826A
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US3041454A
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US3019338A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |