Patent US3700760A successfully refreshed from Google Patents.
Patent US3246157A successfully refreshed from Google Patents.
US3246157A
Expired / Lapsed
US
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Shielding system for a chlorine logging apparatus
Assignee: Atlantic Richfield Co
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Filing: 1962-07-12
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Granted: 1966-04-12
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Expires: 1982-07-12
Abstract
No abstract record available.
Inventors
- 👤 Dale H Reed
- 👤 Henry F Dunlap
- 👤 William C Pritchett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:16
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/101; G21; G21F; G21F1/00; G21F1/02; G21F1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A SHIELDING ARRAY FOR A CHLORINE LOGGING SONDE HAVING A NEUTRON SOURCE AT THE LOWER END THEREOF AND A DETECTOR INCLUDING A SCINTILLATION CRYSTAL AND A PHOTOMULTIPLIER TUBE LOCATED ABOVE THE SOURCE COMPRISING: (A) A LEAD SHIELD POSITIONED BETWEEN THE NEUTRON SOURCE AND THE SCINTILLATION CRYSTAL, (B) A BISMUTH SHIELD HAVING A LONGITUDINAL DIMENSION LESS THAN SAID LEAD SHIELD POSITIONED ABOVE THE ADJACENT TO SAID LEAD SHIELD, AND (C) A BORON SHIELD LOCATED AROUND THE OUTSIDE PORTION OF THE SONDE AT LEAST OPPOSITE SAID SCINTILLATION CRYSTAL.
Claim 2
Dependent Claim
86 words
A SHIELDING ARRAY FOR A CHLORINE LOGGING SONDE HAVING A NEUTRON SOURCE AT THE LOWER END THEREOF AND A DETECTOR INCLUDING A SCINTILLATION CRYSTAL AND A PHOTOMULTIPLIER TUBE LOCATED ABOVE THE SOURCE COMPRISING: (A) A LEAD SHIELD POSITIONED BETWEEN THE NEUTRON SOURCE AND THE SCINTILLATION CRYSTAL, (B) A BISMUTH SHIELD HAVING A LONGITUDINAL DIMENSION LESS THAN SAID LEAD SHIELD POSITIONED ABOVE THE ADJACENT TO SAID LEAD SHIELD, AND (C) A BORON SHIELD LOCATED AROUND THE OUTSIDE PORTION OF THE SONDE AT LEAST OPPOSITE SAID SCINTILLATION CRYSTAL.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |