Patent US4003673A successfully refreshed from Google Patents.
US3124151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
lilly
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:18
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; E21B43/121; E21B43/122; E21B43/123; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/2934
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A CASING PRESSURE-OPERATED GAS LIFT VALVE, COMPRISING, A GENERALLY CYLINDRICAL BODY ADAPTED FOR COAXIAL CONNECTION INTO A WELL TUBING STRING, A VALVE-RECEIVING RECESS IN THE EXTERIOR WALL OF SAID BODY, AN IMPERFORATE TUBULAR SLEEVE SLIDABLY MOUNTED ABOUT SAID BODY TO COMPLETELY ENCLOSE SAID RECESS AND COOPERATING THEREWITH TO DEFINE A VALVE CHAMBER, AN INLET PORT COMMUNICATING SAID VALVE CHAMBER WITH THE EXTERIOR OF SAID BODY, DISCHARGE PASSAGE MEANS COMMUNICATING SAID CHAMBER WITH THE INTERIOR OF SAID BODY, AND A VALVE MEMBER AND A
Claim 2
Dependent Claim
83 words
A CASING PRESSURE-OPERATED GAS LIFT VALVE, COMPRISING, A GENERALLY CYLINDRICAL BODY ADAPTED FOR COAXIAL CONNECTION INTO A WELL TUBING STRING, A VALVE-RECEIVING RECESS IN THE EXTERIOR WALL OF SAID BODY, AN IMPERFORATE TUBULAR SLEEVE SLIDABLY MOUNTED ABOUT SAID BODY TO COMPLETELY ENCLOSE SAID RECESS AND COOPERATING THEREWITH TO DEFINE A VALVE CHAMBER, AN INLET PORT COMMUNICATING SAID VALVE CHAMBER WITH THE EXTERIOR OF SAID BODY, DISCHARGE PASSAGE MEANS COMMUNICATING SAID CHAMBER WITH THE INTERIOR OF SAID BODY, AND A VALVE MEMBER AND A
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) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |