US3114707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certificate of correction
Assignee: —
•
Filing: —
•
Granted: 1963-12-17
•
Expires: 1980-12-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:57
CPC Classifications
A; A01; A01N; A01N43/00; A01N43/72; A01N43/86; Y; Y10; Y10S; Y10S507/00; Y10S507/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
IN THE PROCESS OF SECONDARY OIL RECOVERY CHARACTERIZED BY THE STEP OF INJECTING FLOODING WATER INTO OIL-BEARING SUBTERRANEAN FORMATIONS TO DISPLACE PORTIONS OF THE RESIDUAL OIL THEREIN, THE IMPROVEMENT COMPRISING HAVING PRESENT IN SAID INJECTED FLOODING WATER IN EXCESS OF ABOUT 5 P.P.M. OF A NITROTETRAHYDROOXAZINE HAVING THE FOLLOWING STRUCTURAL FORMULA:
Claim 2
Dependent Claim
51 words
IN THE PROCESS OF SECONDARY OIL RECOVERY CHARACTERIZED BY THE STEP OF INJECTING FLOODING WATER INTO OIL-BEARING SUBTERRANEAN FORMATIONS TO DISPLACE PORTIONS OF THE RESIDUAL OIL THEREIN, THE IMPROVEMENT COMPRISING HAVING PRESENT IN SAID INJECTED FLOODING WATER IN EXCESS OF ABOUT 5 P.P.M. OF A NITROTETRAHYDROOXAZINE HAVING THE FOLLOWING STRUCTURAL FORMULA:
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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |