US3297092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casing patch
Assignee: Pan American Petroleum Corp
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Filing: 1964-07-15
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Granted: 1967-01-10
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Expires: 1984-07-15
Abstract
No abstract record available.
Inventors
- 👤 Earl R Jennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:01
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/10; E21B43/103; E21B43/105; E21B29/00; E21B29/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
AN ARTICLE OF MANUFACTURE SUITABLE FOR EXPANSION TO FORM A LINER FOR CASING IN WELLS, COMPRISING A LONGITUDINALLY CORRUGATED TUBE OF MALLEABLE METAL COATED ON THE EXTERIOR SURFACE WITH A MAT OF GLASS FIBERS FILLED WITH A THERMOPLASTIC RESIN WHICH IS SOLID AT SURFACE STORAGE TEMPERATURES BUT WHICH SOFTENS AT THE TEMPERATURE AT WHICH IT IS TO BE USED IN A WELL, SAID RESIN CONTAINING DISPERSED THEREIN FROM ABOUT 4 TO ABOUT 40 PERCENT BY VOLUME OF FINELY DIVIDED PARTICLES OF A MATERIAL INSOLUBLE IN SAID RESIN AND SOLID AT THE TEMPERATURES AT WHICH IT IS TO BE USED IN SAID WELL.
Claim 2
Dependent Claim
102 words
AN ARTICLE OF MANUFACTURE SUITABLE FOR EXPANSION TO FORM A LINER FOR CASING IN WELLS, COMPRISING A LONGITUDINALLY CORRUGATED TUBE OF MALLEABLE METAL COATED ON THE EXTERIOR SURFACE WITH A MAT OF GLASS FIBERS FILLED WITH A THERMOPLASTIC RESIN WHICH IS SOLID AT SURFACE STORAGE TEMPERATURES BUT WHICH SOFTENS AT THE TEMPERATURE AT WHICH IT IS TO BE USED IN A WELL, SAID RESIN CONTAINING DISPERSED THEREIN FROM ABOUT 4 TO ABOUT 40 PERCENT BY VOLUME OF FINELY DIVIDED PARTICLES OF A MATERIAL INSOLUBLE IN SAID RESIN AND SOLID AT THE TEMPERATURES AT WHICH IT IS TO BE USED IN SAID WELL.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |