US3085428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for determining the movability of conduits
Assignee: ELECTRONICS RES CORP OF AMERIC
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Filing: 1959-07-07
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Granted: 1963-04-16
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Expires: 1979-07-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Alfred W Waddill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:40
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A METHOD FOR DETERMINING WHERE PIPE IN A WELL IS STUCK COMPRISING RECORDING THE RESONANT CHARACTERISTICS OF THE PIPE ALONG A PORTION OF ITS LENGTH ENCOMPASSING THE STUCK POINT, ALTERING THE STRESS ON THE PIPE AND AGAIN RECORDING THE RESONANT CHARACTERISTICS OF THE PIPE ALONG SAID PORTION, AND SUPERIMPOSING THE SAID RECORDINGS WHEREBY THE SAME MAY BE COMPARED TO DETERMINE THE STUCK POINT.
Claim 2
Independent Claim
63 words
A METHOD FOR DETERMINING WHERE PIPE IN A WELL IS STUCK COMPRISING RECORDING THE RESONANT CHARACTERISTICS OF THE PIPE ALONG A PORTION OF ITS LENGTH ENCOMPASSING THE STUCK POINT, ALTERING THE STRESS ON THE PIPE AND AGAIN RECORDING THE RESONANT CHARACTERISTICS OF THE PIPE ALONG SAID PORTION, AND SUPERIMPOSING THE SAID RECORDINGS WHEREBY THE SAME MAY BE COMPARED TO DETERMINE THE STUCK POINT.
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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |