US3198281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seismic method of prospecting
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1960-08-08
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Granted: 1965-08-03
•
Expires: 1980-08-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Mifsud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:43
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/88; G01V; G01V1/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
A METHOD OF SEISMIC PROSPECTING COMPRISING: IMPARTING INTO THE EARTH A FIRST CONTINUOUS WAVE OF FINITE DURATION WHOSE FREQUENCY VARIES LINEARLLY; GENERATING A SECOND CONTINUOUS SIGNAL WHOSE FREQUENCY VARIES THE SAME AS SAID FIRST CONTINUOUS WAVE; CONTINUING GENERATING SAID SECOND CONTINUOUS WAVE AT THE SAME LINEAR CHANGE OF FREQUENCY BEYOND SAID FINITE DURATION; DETECTING THE REFLECTED SIGNAL FROM SAID FIRST WAVE AT THE SURFACE OF THE EARTH; AND OBTAINING THE DIFFERENCE IN FREQUENCY BETWEEN SAID DETECTED REFLECTION AND SAID SECOND WAVEFORM AT THE TIME SECOND REFLECTION IS DETECTED.
References Cited (Backward Citations)
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US2235089A
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US2521130A
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US2916724A
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US2794966A
Cited
US2826750A
Cited
US2928071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |