US2918394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated wall structure
Assignee: Ethane Corp
•
Filing: 1957-09-20
•
Granted: 1959-12-22
•
Expires: 1977-09-20
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:42
CPC Classifications
B; B32; B32B; B32B27/00; F; F16; F16L; F16L11/00; F16L11/04; Y; Y10; Y10S; Y10S215/00; Y10S215/90; Y10S220/00; Y10S220/917; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31587; Y10T428/31605
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A WALL STRUCTURE FOR CONTAINERS, PIPES, HOSES, AND THE LIKE, COMPRISING AT LEAST TWO DISCRETE LAYERS, A FIRST ONE OF SAID LAYERS COMPRISING AN ORIENTED, SUBSTANTIALLY CRYSTALLINE POLYOLEFINIC MATERIAL THAT HAS HIGH TENSILE STRENGTH AND LOW ABRASION RESISTANCE, AND A SECOND LAYER DISPOSED IN PROTECTIVE RELATION THERETO AND COMPRISING AN ORGANIC POLYISOCYNATE ADDUCT THAT HAS HIGH ABRASION RESISTANCE AND THAT IS ADHESIVELY BONDED TO SAID FIRST LAYER.
Claim 2
Dependent Claim
67 words
A WALL STRUCTURE FOR CONTAINERS, PIPES, HOSES, AND THE LIKE, COMPRISING AT LEAST TWO DISCRETE LAYERS, A FIRST ONE OF SAID LAYERS COMPRISING AN ORIENTED, SUBSTANTIALLY CRYSTALLINE POLYOLEFINIC MATERIAL THAT HAS HIGH TENSILE STRENGTH AND LOW ABRASION RESISTANCE, AND A SECOND LAYER DISPOSED IN PROTECTIVE RELATION THERETO AND COMPRISING AN ORGANIC POLYISOCYNATE ADDUCT THAT HAS HIGH ABRASION RESISTANCE AND THAT IS ADHESIVELY BONDED TO SAID FIRST LAYER.
References Cited (Backward Citations)
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Cited
US2729618A
Cited
US2818404A
Cited
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Cited
US2763316A
Cited
US2791576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |