US5098778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic based laminates comprising outer fiber-reinforced thermoset sheets, lofted fiber-reinforced thermoplastic sheets and a foam core layer
Assignee: General Electric Co
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Filing: 1990-04-24
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Granted: 1992-03-24
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Expires: 2010-04-24
Abstract
Abstract A light weight, high strength laminate having improved fire resistant characteristics and the method of making the same. A preferred embodiment includes a low density fiber reinforced thermoplastic resin core between two parallel sheets of high density fiber reinforced thermoset resin. Another embodiment includes a core of polymeric foam laminated between two parallel inner fiber reinforced thermoplastic resin layers each of which face an outer layer of fiber reinforced thermoplastic resin.
Inventors
- 👤 Michael G. Minnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:25
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B32B27/06; B32B27/08; B29; B29C; B29C44/00; B29C44/02; B29C44/04; B29C44/06; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B32B27/18; B32B27/20; B32B5/00; B32B5/22; B32B5/24; B32B5/28; E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/24; E04C2/246; B29K; B29K2101/00; B29K2101/10; B29K2101/12; B32B2262/00; B32B2262/10; B32B2262/101; B32B2305/00; B32B2305/07; B32B2305/08; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2307/70; B32B2307/718; B32B2309/00; B32B2309/02; B32B2309/12; B32B2419/00; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10S428/903; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/24995; Y10T428/249953; Y10T428/249955; Y10T428/249956; Y10T428/249958; Y10T428/249981; Y10T428/249982; Y10T428/249985; Y10T428/249986; Y10T428/30; Y10T442/00; Y10T442/30; Y10T442/3325; Y10T442/335; Y10T442/3358; Y10T442/3472; Y10T442/3528; Y10T442/3537; Y10T442/3602; Y10T442/3699; Y10T442/60; Y10T442/647; Y10T442/651; Y10T442/659; Y10T442/67; Y10T442/696
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
60 words
A lightweight, high strength laminate comprising: a. two spaced parallel sheets of fiber reinforced thermoset resin; b. at least two layers of fiber reinforced lofted thermoplastic resin laminated between the two parallel sheets of fiber reinforced thermoset resin; and c. a core layer of polyphenylene ether-polystyrene blend, polystyrene or polyurethane foam or mixtures thereof disposed between the thermoplastic resin layers.
Claim 2
Dependent Claim
60 words
A lightweight, high strength laminate comprising: a. two spaced parallel sheets of fiber reinforced thermoset resin; b. at least two layers of fiber reinforced lofted thermoplastic resin laminated between the two parallel sheets of fiber reinforced thermoset resin; and c. a core layer of polyphenylene ether-polystyrene blend, polystyrene or polyurethane foam or mixtures thereof disposed between the thermoplastic resin layers.
Claim 3
Dependent Claim
17 words
A laminate according to claim 1 wherein the core layer is adhesively bonded to the thermoplastic layers.
Claim 4
Dependent Claim
26 words
A laminate according to claim 2 wherein the adhesive is a hot melt adhesive with a melting point between about 80° C. and about 120° C.
Claim 5
Dependent Claim
41 words
A laminate according to claim 1 having an outer layer on at least one side comprising about 10% to about 50% crosslinked acrylate elastomer, about 5% to about 35% crosslinked styrene-acrylonitrile copolymer, and about 15% to about 85% linear styrene-acrylonitrile copolymer.
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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) | 1995-03-24 | 1995-09-23 | 1996-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-24 | 1999-09-23 | 2000-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-24 | 2003-09-23 | 2004-03-24 | $7700.00 | Window Closed / Lapsed |