US3140747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-in-oil emulsion well fluid
Assignee: Phillips Petroleum Co
•
Filing: 1960-07-27
•
Granted: 1964-07-14
•
Expires: 1980-07-27
Abstract
No abstract record available.
Inventors
- 👤 Mitacek Bill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:58
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/32; C09K8/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A WELL SERVICING FLUID COMPRISING A WATER-IN-OIL EMULSION CONTAINING A WATER SOLUBLE STABILIZING AGENT, A POLYNER SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE, COPOLYMERS OF ETHYLENE AND PROPYLENE,
Claim 2
Dependent Claim
29 words
A WELL SERVICING FLUID COMPRISING A WATER-IN-OIL EMULSION CONTAINING A WATER SOLUBLE STABILIZING AGENT, A POLYNER SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE, COPOLYMERS OF ETHYLENE AND PROPYLENE,
References Cited (Backward Citations)
CA579183A
Cited
US2712355A
Cited
US2702787A
Cited
US2661334A
Cited
US2912380A
Cited
US2919898A
Cited
US3057797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |