US3237153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detection of acoustic signals
Assignee: Schlumberger Well Surveying Corp
•
Filing: 1959-09-21
•
Granted: 1966-02-22
•
Expires: 1979-09-21
Abstract
No abstract record available.
Inventors
- 👤 Robert B Blizard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:44
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN AN APPARATUS FOR DETERMINING THE INSTANT OF ARRIVAL AT A GIVEN LOCATION IN A MEDIUM OF AN ACOUSTIC WAVE HAVING CHARACTERISTIC PORTIONS BEING PROPAGATED IN THE MEDIUM, THE COMBINATION OF AN INDIVIDUAL TRANSDUCER DISPOSED IN THE MEDIUM WHICH IS RESPONSIVE TO ENERGY IN SAID ACOUSTIC WAVE FOR COVERTING THE SAME TO A SINGLE ELECTRIC SIGNAL HAVING CHARACTERISTIC PORTIONS THAT CORRESPOND TO SAID CHARACTERISTIC PORTIONS OF SAID ACOUSTIC WAVE, AT LEAST FIRST AND SECOND CIRCUIT MEANS COUPLED TO SAID TRANSDUCER RESPECTIVELY RESPONSIVE TO VALUES ABOVE DIFFERENT PREDETERMINED MINIMUMS OF SEPARATE AMPLITUDE CHARACTERISTICS OF SAID SINGLE ELECTRIC SIGNAL FOR DEVELOPING AT LEAST FIRST AND SECOND OUTPUT SIGNALS HAVING A PREDETER-
Claim 2
Dependent Claim
109 words
IN AN APPARATUS FOR DETERMINING THE INSTANT OF ARRIVAL AT A GIVEN LOCATION IN A MEDIUM OF AN ACOUSTIC WAVE HAVING CHARACTERISTIC PORTIONS BEING PROPAGATED IN THE MEDIUM, THE COMBINATION OF AN INDIVIDUAL TRANSDUCER DISPOSED IN THE MEDIUM WHICH IS RESPONSIVE TO ENERGY IN SAID ACOUSTIC WAVE FOR COVERTING THE SAME TO A SINGLE ELECTRIC SIGNAL HAVING CHARACTERISTIC PORTIONS THAT CORRESPOND TO SAID CHARACTERISTIC PORTIONS OF SAID ACOUSTIC WAVE, AT LEAST FIRST AND SECOND CIRCUIT MEANS COUPLED TO SAID TRANSDUCER RESPECTIVELY RESPONSIVE TO VALUES ABOVE DIFFERENT PREDETERMINED MINIMUMS OF SEPARATE AMPLITUDE CHARACTERISTICS OF SAID SINGLE ELECTRIC SIGNAL FOR DEVELOPING AT LEAST FIRST AND SECOND OUTPUT SIGNALS HAVING A PREDETER-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |