US3125124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conduit with corrosion resistant liner
Assignee: —
•
Filing: —
•
Granted: 1964-03-17
•
Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:26
CPC Classifications
E; E21; E21B; E21B17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A REINFORCED, CORROSION RESISTANT LINE PIPE ASSEMBLY COMPRISING A STEEL PIEP; A SUBSTANTIALLY RIGID, RESINOUS PIPE SELECTED FROM THE GROUP OF RESINOUS MATERIALS CONSISTING OF SOLID LINEAR POLYETHYLENE, A SOLID LINEAR COPOLYMER OF ETHYLENE AND PROPYLENE, AND A SOLID LINEAR COPOLYMER OF ETHYLENE AND L-BUTENE, SAID RESINOUS PIPE BEING POSITIONED IN SAID STEEL PIPE SO AS TO PROVIDE AN ANNULUS BETWEEN SAID PIPES; AND A HYDRATED HYDRAULIC CEMENT SUBSTANTIALLY FILLING SAID ANNULUS.
Claim 2
Dependent Claim
72 words
A REINFORCED, CORROSION RESISTANT LINE PIPE ASSEMBLY COMPRISING A STEEL PIEP; A SUBSTANTIALLY RIGID, RESINOUS PIPE SELECTED FROM THE GROUP OF RESINOUS MATERIALS CONSISTING OF SOLID LINEAR POLYETHYLENE, A SOLID LINEAR COPOLYMER OF ETHYLENE AND PROPYLENE, AND A SOLID LINEAR COPOLYMER OF ETHYLENE AND L-BUTENE, SAID RESINOUS PIPE BEING POSITIONED IN SAID STEEL PIPE SO AS TO PROVIDE AN ANNULUS BETWEEN SAID PIPES; AND A HYDRATED HYDRAULIC CEMENT SUBSTANTIALLY FILLING SAID ANNULUS.
References Cited (Backward Citations)
US869266A
Cited
US1709893A
Cited
US2050645A
Cited
US2120309A
Cited
US2516242A
Cited
US2474660A
Cited
US2598972A
Cited
US2719348A
Cited
US2709845A
Cited
US2816323A
Cited
US2723882A
Cited
US2962052A
Cited
US2932323A
Cited
US2918394A
Cited
US2971538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |