US2652496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radioactivity method and apparatus for borehole logging
Assignee: Texaco Inc
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Filing: 1950-03-28
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Granted: 1953-09-15
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Expires: 1970-03-28
Abstract
No abstract record available.
Inventors
- 👤 Herzog Gerhard
- 👤 Alexander S Mckay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:21
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A DEVICE FOR LOGGING A BORE HOLE TRAVERSING SUBSURFACE FORMATIONS AND CONTAINING A FLUID COMPRISING AN ELONGATED INSTRUMENT HOUSING ADAPTED TO BE PASSED THROUGH THE HOLE, A CABLE ON WHICH SAID HOUSING IS SUSPENDED FROM THE SURFACE, A SOURCE OF PRIMARY RADIATION AND A DETECTOR OF SECONDARY RADIATION IN THE LOWER PORTION OF SAID HOUSING, A FLEXIBLE IMPERVIOUS SHEATH ATTACHED TO SAID HOUSING NEAR ITS UPPER END AND SURROUNDING THE LOWER PORTION OF THE HOUSING, AND A QUALITY OF A FLUID-LIKE SUBSTANCE IN SAID SHEATH, SAID SUBSTANCE BEING SUBSTANTIALLY NONHYDRGENEOUS AND HAVING A LOW CAPTURE CROSSSECTION FOR SLOW NEUTRONS.
Claim 2
Independent Claim
99 words
A DEVICE FOR LOGGING A BORE HOLE TRAVERSING SUBSURFACE FORMATIONS AND CONTAINING A FLUID COMPRISING AN ELONGATED INSTRUMENT HOUSING ADAPTED TO BE PASSED THROUGH THE HOLE, A CABLE ON WHICH SAID HOUSING IS SUSPENDED FROM THE SURFACE, A SOURCE OF PRIMARY RADIATION AND A DETECTOR OF SECONDARY RADIATION IN THE LOWER PORTION OF SAID HOUSING, A FLEXIBLE IMPERVIOUS SHEATH ATTACHED TO SAID HOUSING NEAR ITS UPPER END AND SURROUNDING THE LOWER PORTION OF THE HOUSING, AND A QUALITY OF A FLUID-LIKE SUBSTANCE IN SAID SHEATH, SAID SUBSTANCE BEING SUBSTANTIALLY NONHYDRGENEOUS AND HAVING A LOW CAPTURE CROSSSECTION FOR SLOW NEUTRONS.
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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) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |