US3338271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impervious tubular wall
Assignee: Owens Corning
•
Filing: 1963-09-30
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Granted: 1967-08-29
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Jesse H Plummer
- 👤 Irving N Einhorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:06
CPC Classifications
F; F17; F17C; F17C3/00; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0604; F17C2203/0607; F17C2203/0612; F17C2203/0614; F17C2203/0621; F17C2203/0624; F17C2203/0634; F17C2203/0658; F17C2203/0663; F17C2203/0673; F17C2203/0678; F17C2209/00; F17C2209/21; F17C2209/2154; F17C2209/2163; F17C2221/00; F17C2221/01; F17C2221/014; F17C2221/03; F17C2221/031; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033; F17C2260/00; F17C2260/03; F17C2260/035; F17C2260/036; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A FLUID-IMPERVIOUS WALL OF TUBULAR STRUCTURE HAVING INNER AND OUTER SURFACES, A LAYER OF HARDENED THERMOSETTING RESIN, A FIRST PORTION OF SAID LAYER HAVING A LAYER OF FLAKES OF FLUID-IMPERVIOUS MATERIAL DISPERSED THERETHROUGH IN AN ARRAY EXTENDING IN THE PLANE OF THE LAYER OF HARDENED RESIN, AND IN OVERLAPPING RELATION, AND WITH THE FLAKES SEPARATED FROM ONE ANOTHER BY MATRIX INTERPOSED THEREBETWEEN, A SECOND PORTION OF SAID LAYER HAVING A LAYER OF CROSSWOUND STRANDS THEREIN. AND SAID CROSS-WOUND STRANDS BEING LOCATED AT A SUBSTANTIAL DISTANCE FROM SAID INNER AND OUTER SURFACES.
Claim 2
Dependent Claim
92 words
IN A FLUID-IMPERVIOUS WALL OF TUBULAR STRUCTURE HAVING INNER AND OUTER SURFACES, A LAYER OF HARDENED THERMOSETTING RESIN, A FIRST PORTION OF SAID LAYER HAVING A LAYER OF FLAKES OF FLUID-IMPERVIOUS MATERIAL DISPERSED THERETHROUGH IN AN ARRAY EXTENDING IN THE PLANE OF THE LAYER OF HARDENED RESIN, AND IN OVERLAPPING RELATION, AND WITH THE FLAKES SEPARATED FROM ONE ANOTHER BY MATRIX INTERPOSED THEREBETWEEN, A SECOND PORTION OF SAID LAYER HAVING A LAYER OF CROSSWOUND STRANDS THEREIN. AND SAID CROSS-WOUND STRANDS BEING LOCATED AT A SUBSTANTIAL DISTANCE FROM SAID INNER AND OUTER SURFACES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |