US2770307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paraffin removal process for oil wells
Assignee: Parafrac Inc
•
Filing: 1954-06-01
•
Granted: 1956-11-13
•
Expires: 1974-06-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Deerdoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:26
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/52; C09K8/524
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A METHOD OF REMOVING DEPOSITED PARAFFIN ENCRUSTATION FROM THE WELL TUBING AND PUMP RODS OF PUMPING OIL WELLS WHICH COMPRISES SEQUENTIALLY FORCING LAYERS OF AN EMULSION BREAKER, A LUBRICATING GREASE AND HOT OIL DOWN THE WELL TUBING THEREBY REMOVING THE ENCRUSTED PARAFFIN
Claim 2
Independent Claim
42 words
A METHOD OF REMOVING DEPOSITED PARAFFIN ENCRUSTATION FROM THE WELL TUBING AND PUMP RODS OF PUMPING OIL WELLS WHICH COMPRISES SEQUENTIALLY FORCING LAYERS OF AN EMULSION BREAKER, A LUBRICATING GREASE AND HOT OIL DOWN THE WELL TUBING THEREBY REMOVING THE ENCRUSTED PARAFFIN
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) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |