Patent US3193437A successfully refreshed from Google Patents.
US3193437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated articles containing sheets of flexible foamed plastics and method for makin the same
Assignee: Freeman Chemical Corp
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Filing: 1961-07-19
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Granted: 1965-07-06
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Expires: 1981-07-19
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Schafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:56
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29K; B29K2309/00; B29K2309/08; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249994; Y10T428/249999
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A REINFORCED LAMINATED ARTICLE HAIVNG A GLASS-FIBER MAT, A RESILIENT SHEET OF FLEXIBLE FOAMED POLYURETHANE HAVING CONNECTED OPEN CELLS AND AN UNSATURATED POLYESTER RESIN FILLER DISPOSED THROUGHOUT THE INTERSTICES OF SAID MAT AND SAID SHEET, THE SAID SHEET BEING DISPOSED OVER ONE EXPOSED SURFACE OF THE SAID ARTICLE, SAID UNSATURATED POLYESTER RESIN BEING CURED TO A THERMOSET CONDITION WHILE THE SAID ARTICLE IS MAINTAINED UNDER COMPRESSION WHEREBY THE SAID CONNECTED OPEN CELLS OF THE SAID FOAMED POLYURETHANE SHEET ARE COMPRESSED AND ENTIRELY FILLED WITH THE SAID UNSATURATED POLYESTER RESIN AND THE SAID SHEET IS SUBSTANTIALLY FLATTENED FROM ITS INITIAL UNCOMPRESSED THICKNESS.
Claim 2
Dependent Claim
101 words
A REINFORCED LAMINATED ARTICLE HAIVNG A GLASS-FIBER MAT, A RESILIENT SHEET OF FLEXIBLE FOAMED POLYURETHANE HAVING CONNECTED OPEN CELLS AND AN UNSATURATED POLYESTER RESIN FILLER DISPOSED THROUGHOUT THE INTERSTICES OF SAID MAT AND SAID SHEET, THE SAID SHEET BEING DISPOSED OVER ONE EXPOSED SURFACE OF THE SAID ARTICLE, SAID UNSATURATED POLYESTER RESIN BEING CURED TO A THERMOSET CONDITION WHILE THE SAID ARTICLE IS MAINTAINED UNDER COMPRESSION WHEREBY THE SAID CONNECTED OPEN CELLS OF THE SAID FOAMED POLYURETHANE SHEET ARE COMPRESSED AND ENTIRELY FILLED WITH THE SAID UNSATURATED POLYESTER RESIN AND THE SAID SHEET IS SUBSTANTIALLY FLATTENED FROM ITS INITIAL UNCOMPRESSED THICKNESS.
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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) | 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 |