US3591444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heavy-duty foam laminates
Assignee: Bayer AG
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Filing: 1968-06-26
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Granted: 1971-07-06
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Expires: 1988-06-26
Abstract
Abstract A REINFORCED FOAM PLASTIC LAMINATE HAVING A SPECIAL MARGINAL ZONE REINFORCING INSERT COMPRISING A REINFORCING MAT AND A LAYER OF FIBERS WHICH ARE INTERMESHED WITH SAID REINFORCING MAT TO FIRMLY JOIN THE MARGINAL REINFORCING MAT TO THE FOAM CORE. THE HEAVY-DUTY FOAM LAMINATES HAVE EXTREMELY HIGH STATIC AND DYNAMIC STRENGTH VALUES AND CAN BE USED IN VARIOUS FORMS IN THE BUILDING OF VEHICLES, HOUSING AND FURNITURE OF THE LIKE.
Inventors
- 👤 Peter Hoppe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:18
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/205; B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23914; Y10T428/23943; Y10T428/23979; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249958; Y10T428/24996; Y10T428/249986; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |