US2887650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for geophysical exploration
Assignee: Newmont Corp
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Filing: 1955-05-04
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Granted: 1959-05-19
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Expires: 1975-05-04
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Ruddock
- 👤 Arthur A Brant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:46
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/15; G01V3/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A METHOD OF ESTABLISHING THE PRESENCE OF A HIDDEN CONDUCTING ORE BODY WHICH COMPRISES ESTABLISHING A PRIMARY ALTERNATING MAGNETIC FLUX FIELD THROUGH A SELECTED REGION OF GROUND, AND MEASURAING THE COMPONENTS OF THE RESULTANT SECONDARY FLUX FIELD ARISING BY REASON OF EDDY CURRENTS FLOWING IN A CONDUCTING BODY DISPOSED WITHIN THE FIELD OF INFLUENCE OF THE PRIMARY FIELD, SAID SECONDARY FLUX FIELD COMPONENTS BEING MEASURED AT THE INSTANTS THAT THE PRIMARY FIELD PASSES THROUGH ITS MINIMUM AND MAXIMUM VALUES.
Claim 2
Independent Claim
79 words
A METHOD OF ESTABLISHING THE PRESENCE OF A HIDDEN CONDUCTING ORE BODY WHICH COMPRISES ESTABLISHING A PRIMARY ALTERNATING MAGNETIC FLUX FIELD THROUGH A SELECTED REGION OF GROUND, AND MEASURAING THE COMPONENTS OF THE RESULTANT SECONDARY FLUX FIELD ARISING BY REASON OF EDDY CURRENTS FLOWING IN A CONDUCTING BODY DISPOSED WITHIN THE FIELD OF INFLUENCE OF THE PRIMARY FIELD, SAID SECONDARY FLUX FIELD COMPONENTS BEING MEASURED AT THE INSTANTS THAT THE PRIMARY FIELD PASSES THROUGH ITS MINIMUM AND MAXIMUM VALUES.
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) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |