US4885206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam composite and manufacture thereof
Assignee: BASF SE
•
Filing: 1989-05-05
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Granted: 1989-12-05
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Expires: 2009-05-05
Abstract
Abstract A flexible foam composite of high flame resistance consists of one or more layers of a flexible melamine resin foam from 4 to 25 g/l in density and one or more layers of a flexible polyimide foam from 8 to 40 g/l in density.
Inventors
- 👤 Onno Graalmann
- 👤 Guenter Kreibiehl
- 👤 Gerhard Turznik
- 👤 Heinz Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:14
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/32; B32B5/18; C; C08; C08J; C08J9/00; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0285; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/31504; Y10T428/31721
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A foam composite consisting of (a) one or more layers of a flexible melamine formaldlehyde resin foam from 8 to 25 g/1 in density and (b) one or more layers of a flexible polyimide foam from 8 to 40 g/1 in density.
Claim 2
Dependent Claim
42 words
A foam composite consisting of (a) one or more layers of a flexible melamine formaldlehyde resin foam from 8 to 25 g/1 in density and (b) one or more layers of a flexible polyimide foam from 8 to 40 g/1 in density.
References Cited (Backward Citations)
US3966652A
Cited
EP0017672A1
Cited
EP0017671A1
Cited
US4296208A
Cited
US4426463A
Cited
US4599365A
Cited
US4604409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-04 | 1993-06-05 | 1993-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-04 | 1997-06-05 | 1997-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-04 | 2001-06-05 | 2001-12-05 | $7700.00 | Window Closed / Lapsed |