US2716730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for magnetic well logging
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1952-07-24
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Granted: 1955-08-30
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Expires: 1972-07-24
Abstract
No abstract record available.
Inventors
- 👤 Philip S Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:05
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
APPARATUS FOR MAGNETICALLY LOGGING A BOREHOLE COMPRISING MEANS FOR DEVELOPING A SIGNAL DEPENDENT ON THE DIFFERENCE IN INTENSITY AND DIRECTION OF THE HORIZONTAL COMPONENTS OF THE NATURAL MAGNETIC FIELDS EXISTING AT LEAST TWO VERTICALLY SPACED POINTS IN THE BOREHOLE, MEANS FOR SIMULTANEOUSLY DEVELOPING A SIGNAL DEPENDENT ON THE HORIZONTAL COMPONENT OF THE EARTH''S MAGNETIC FIELD AT AN ADJACENT LEVEL, AND MEANS FOR COMPARING THE SAID SIGNALS.
Claim 2
Dependent Claim
66 words
APPARATUS FOR MAGNETICALLY LOGGING A BOREHOLE COMPRISING MEANS FOR DEVELOPING A SIGNAL DEPENDENT ON THE DIFFERENCE IN INTENSITY AND DIRECTION OF THE HORIZONTAL COMPONENTS OF THE NATURAL MAGNETIC FIELDS EXISTING AT LEAST TWO VERTICALLY SPACED POINTS IN THE BOREHOLE, MEANS FOR SIMULTANEOUSLY DEVELOPING A SIGNAL DEPENDENT ON THE HORIZONTAL COMPONENT OF THE EARTH''S MAGNETIC FIELD AT AN ADJACENT LEVEL, AND MEANS FOR COMPARING THE SAID SIGNALS.
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) | 1958-08-29 | 1959-02-28 | 1959-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-29 | 1963-02-28 | 1963-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-29 | 1967-02-28 | 1967-08-30 | $7700.00 | Window Closed / Lapsed |