US3588804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telemetering system for use in boreholes
Assignee: Globe Universal Sciences Inc
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Filing: 1969-06-16
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Granted: 1971-06-28
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Expires: 1989-06-16
Abstract
Abstract A TELEMETERING SYSTEM FOR TRANSMITTING INFORMATION FROM THE BOTTOM OF A BOREHOLE TO THE SURFACE USING THE DRILL PIPE AS A TRANSMISSION LINK WHEREIN THE INFORMATION IS TRANSMITTED ON A CARRIER CONSISTING OF ULTRASONIC SHEAR WAVES INDUCED IN A DRILL PIPE. THE SHEAR WAVES MAY BE IN THE FORM OF A PULSED ULTRASONIC FREQUENCY OR A CONTINUOUS ULTRASONIC FREQUENCY OR A COMBINATION OF THE TWO. THE SHEAR WACES ARE DETECTED AT THE SURFACE AND THE INFORMATION RECOVERED FROM THE DETECTED SIGNAL.
Inventors
- 👤 Jacob Robert Fort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:02
CPC Classifications
H; H04; H04B; H04B13/00; H04B13/02; E; E21; E21B; E21B47/00; E21B47/12; E21B47/14; E21B47/16; G; G10; G10K; G10K15/00; H04B11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |