Patent US3213358A successfully refreshed from Google Patents.
US3213358A
Expired / Lapsed
US
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Method and apparatus for generating and detecting shear waves in earth formations
Assignee: Phillips Petroleum Co
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Filing: 1962-03-08
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Granted: 1965-10-19
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Expires: 1982-03-08
Abstract
No abstract record available.
Inventors
- 👤 Raymond G Piety
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:05
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/52; G01V1/02; G01V1/04; G01V1/047
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
53 words
A METHOD OF MEASURING PROPERTIES OF FORMATION ADJACENT BORE HOLE COMPRISING ESTABLISHING A MAGNETIC FIELD AT A FIRST POINT IN THE FORMATION PARALLEL TO THE AXIS OF THE BORE HOLE, PSSING ELECTRICAL CURRENT RADIALLY INTO SAID FORMATION FROM SAID BORE HOLE AT SAID FIRST POINT AND THROUGH AND SUBSTANTIALLY PERPENDICULAR TO SAID MAGNETIC
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |