Patent US3086592A successfully refreshed from Google Patents.
US3086592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement reversing out tool for casingless completions
Assignee: Phillips Petroleum Co
•
Filing: 1960-01-25
•
Granted: 1963-04-23
•
Expires: 1980-01-25
Abstract
No abstract record available.
Inventors
- 👤 Robert S Hoch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:26
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/14; E21B43/00; E21B43/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A VALVE STRUCTURE COMPRISING, IN COMBINATION, A BODY MEMBER HAVING A PAIR OF CONDUITS THE AXES OF WHICH ARE VERTICALLY POSITIONED, A THIRD CONDUIT COMMUNICATING THE CONDUITS OF SAID PAIR OF CONDUITS WITH EACH OTHER, A SLIDABLE SLEEVE MEMBER IN EACH CONDUIT OF SAID PAIR OF CONDUITS AND CLOSING SAID THIRD CONDUIT, THE UPPER END OF EACH SLEEVE MEMBER HAVING A SURFACE FOR SEATING A VALVE, A SEPARATE VALVE PLUG IN EACH CONDUIT OF SAID PAIR OF CONDUITS POSITIONED ABOVE THE SLEEVE MEMBERS, THE
Claim 2
Dependent Claim
84 words
A VALVE STRUCTURE COMPRISING, IN COMBINATION, A BODY MEMBER HAVING A PAIR OF CONDUITS THE AXES OF WHICH ARE VERTICALLY POSITIONED, A THIRD CONDUIT COMMUNICATING THE CONDUITS OF SAID PAIR OF CONDUITS WITH EACH OTHER, A SLIDABLE SLEEVE MEMBER IN EACH CONDUIT OF SAID PAIR OF CONDUITS AND CLOSING SAID THIRD CONDUIT, THE UPPER END OF EACH SLEEVE MEMBER HAVING A SURFACE FOR SEATING A VALVE, A SEPARATE VALVE PLUG IN EACH CONDUIT OF SAID PAIR OF CONDUITS POSITIONED ABOVE THE SLEEVE MEMBERS, THE
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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |