US4931358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber-reinforced thermoplastic panels
Assignee: BASF SE
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Filing: 1988-12-09
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Granted: 1990-06-05
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Expires: 2008-12-09
Abstract
Abstract The invention relates to semifinished material consisting of a thermoplastic polymer and a needled textile fabric made up of at least two layers of oriented continuous filament yarn, each having an areal mass of not more than 300 g/m 2 , and at least one layer of unoriented fibers.
Inventors
- 👤 Ludwig Wahl
- 👤 Helmut Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:37
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B27/00; B32B27/04; B32B27/32; B32B5/02; B32B5/06; B32B5/12; B32B5/28; B32B2250/00; B32B2250/42; B32B2262/00; B32B2262/10; B32B2262/101; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/27; Y10T428/30; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/348; Y10T442/3496
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
83 words
Fiber-reinforced thermoformable semifinished material containing a thermoplastic polymer and a needled textile fabric, wherein the textile fabric consists of at least two layers A of continuous filament yarn oriented in at least one preferred direction, each having an areal mass of not more than 300 g/m 2 and at least one layer B of unoriented fibers in a ratio by mass of A:B from 80:20 to 40:60, wherein the textile fabric is built up from layers arranged as ABAB or ABABAB or ABABABAB.
Claim 2
Dependent Claim
83 words
Fiber-reinforced thermoformable semifinished material containing a thermoplastic polymer and a needled textile fabric, wherein the textile fabric consists of at least two layers A of continuous filament yarn oriented in at least one preferred direction, each having an areal mass of not more than 300 g/m 2 and at least one layer B of unoriented fibers in a ratio by mass of A:B from 80:20 to 40:60, wherein the textile fabric is built up from layers arranged as ABAB or ABABAB or ABABABAB.
Claim 3
Dependent Claim
28 words
Fiber-reinforced semifinished material containing two fabrics built up as claimed in claim 1 and so arranged that the surfaces of the semifinished material are formed by layers A.
Claim 4
Dependent Claim
19 words
Fiber-reinforced semifinished material as claimed in claim 1 wherein the textile fabric is of glass fibers or carbon fibers.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-04 | 1993-12-04 | 1994-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-04 | 1997-12-04 | 1998-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-04 | 2001-12-04 | 2002-06-05 | $7700.00 | Window Closed / Lapsed |