US2654436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating well fluids
Assignee: Macco Oil Tool Co Inc
•
Filing: 1951-07-16
•
Granted: 1953-10-06
•
Expires: 1971-07-16
Abstract
No abstract record available.
Inventors
- 👤 Willis C Carlisle
- 👤 John H Mccarvell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:00
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; E; E21; E21B; E21B41/00; E21B41/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A METHOD OF PREVENTING CORROSION IN A WELL COMPRISING THE STEPS OF INTRODUCING A COLUMN OF A CORROSION INHIBITING CHEMICAL INTO AN ANNULAR PASSAGE BETWEEN A WELL TUBING AND A WELL CASING,
Claim 2
Independent Claim
32 words
A METHOD OF PREVENTING CORROSION IN A WELL COMPRISING THE STEPS OF INTRODUCING A COLUMN OF A CORROSION INHIBITING CHEMICAL INTO AN ANNULAR PASSAGE BETWEEN A WELL TUBING AND A WELL CASING,
References Cited (Backward Citations)
US1703423A
Cited
US2144144A
Cited
US2143251A
Cited
US2307662A
Cited
US2357559A
Cited
US2581540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |