US3275980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of inverse filtering geophysical data
Assignee: Mobil Oil AS
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Filing: 1963-05-29
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Granted: 1966-09-27
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Expires: 1983-05-29
Abstract
No abstract record available.
Inventors
- 👤 Manus R Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:18
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/38; E; E21; E21B; E21B47/00; G01V1/00; G01V1/28; G01V1/36; G01V1/364; G01V1/368; G01V2210/00; G01V2210/30; G01V2210/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
IN GEOPHYSICAL EXPLORATION, THE METHOD WHICH COMPRISES THE STEPS OF: (A) GENERATING AS A DEPENDENT VARIABLE A FIRST FUNCTION CONTROLLED BY AN EARTH CHARACTERISTIC AND WHICH FUNCTION HAS BEEN FILTERED BY AN OPERATOR WHOSE IMPULSE RESPONSE IS A MOVING-AVERAGE CHARACTERISTIC, AND (B) PASSING SAID FIRST FUNCTION THROUGH A SYSTEM HAVING AN IMPULSE RESPONSE WHICH CONVERTS SAID MOVINGAVERAGE CHARACTERISTIC TO A SPIKE FUNCTION TO RENDER SAID FIRST FUNCTION MORE REPRESENTATIVE OF SAID EARTH CHARACTERISTIC AND MORE FREE FROM SYSTEM DISTORTION.
Claim 2
Dependent Claim
79 words
IN GEOPHYSICAL EXPLORATION, THE METHOD WHICH COMPRISES THE STEPS OF: (A) GENERATING AS A DEPENDENT VARIABLE A FIRST FUNCTION CONTROLLED BY AN EARTH CHARACTERISTIC AND WHICH FUNCTION HAS BEEN FILTERED BY AN OPERATOR WHOSE IMPULSE RESPONSE IS A MOVING-AVERAGE CHARACTERISTIC, AND (B) PASSING SAID FIRST FUNCTION THROUGH A SYSTEM HAVING AN IMPULSE RESPONSE WHICH CONVERTS SAID MOVINGAVERAGE CHARACTERISTIC TO A SPIKE FUNCTION TO RENDER SAID FIRST FUNCTION MORE REPRESENTATIVE OF SAID EARTH CHARACTERISTIC AND MORE FREE FROM SYSTEM DISTORTION.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |