US3193441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated articles and method of making same
Assignee: FRCEMAN CHEMICAL Corp
•
Filing: 1961-08-28
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Granted: 1965-07-06
•
Expires: 1981-08-28
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Schafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:55
CPC Classifications
B; B32; B32B; B32B27/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249994; Y10T428/249999; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
77 words
A SUBSTANTIALLY NON-POROUS LAMINATED ARTICLE COMPRISING A RESILIENT SHEET OF FLEXIBLE FOAMED POLYURETHANE HAVING OPEN, CONNECTED CELLS, SAID LAMINATED ARTICLE HAVING ITS OPEN CELLS, SUBSTANTIALLY ENTIRELY FILLED WITH A THERMOSETTING RESINOUS COMPOSITION IN A HARDENED, THERMOSET CONDITION, THE SAID THERMOSETTING RESINOUS COMPOSITION HAVING BEEN CURED WHILE THE SAID FOAMED POLYURETHANE WAS MAINTAINED UNDER COMPRESSION WHEREBY THE SAID SAID FOAMED POLYURETHANE IS SUBSTANTIALLY FLATTENED FROM ITS INITIAL UNCOMPRESSED THICKNESS AND IS SUBSTANTIALLY UNIFORMLY DISPOSED THROUGHOUT THE SAID ARTICLE.
Claim 2
Dependent Claim
77 words
A SUBSTANTIALLY NON-POROUS LAMINATED ARTICLE COMPRISING A RESILIENT SHEET OF FLEXIBLE FOAMED POLYURETHANE HAVING OPEN, CONNECTED CELLS, SAID LAMINATED ARTICLE HAVING ITS OPEN CELLS, SUBSTANTIALLY ENTIRELY FILLED WITH A THERMOSETTING RESINOUS COMPOSITION IN A HARDENED, THERMOSET CONDITION, THE SAID THERMOSETTING RESINOUS COMPOSITION HAVING BEEN CURED WHILE THE SAID FOAMED POLYURETHANE WAS MAINTAINED UNDER COMPRESSION WHEREBY THE SAID SAID FOAMED POLYURETHANE IS SUBSTANTIALLY FLATTENED FROM ITS INITIAL UNCOMPRESSED THICKNESS AND IS SUBSTANTIALLY UNIFORMLY DISPOSED THROUGHOUT THE SAID ARTICLE.
Claim 3
Dependent Claim
20 words
THE LAMINATED ARTICLE OF CLAIM 1 WHEREIN A PLURALITY OF LAYERS OF FOAMED POLYURETHANE ARE UTILIZED IN A SANDWICH ASSEMBLY.
References Cited (Backward Citations)
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Cited
US2744047A
Cited
US2927876A
Cited
US2782458A
Cited
US2866730A
Cited
US2905580A
Cited
US2994110A
Cited
US3018206A
Cited
US3050414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |