US5087500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer panel
Assignee: Cytec Technology Corp
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Filing: 1990-03-28
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Granted: 1992-02-11
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Expires: 2010-03-28
Abstract
Abstract In a multilayer panel comprising a core layer A with a honeycomb structure or an open-celled foam structure and at least one cover layer C made of a fiber-reinforced thermoplastic polymer, layers A and C are bonded to one another by an adhesive B which is a thermoplastic polymer.
Inventors
- 👤 Dietmar Kasper
- 👤 Herbert Woltron
- 👤 Guenter Kreibiehl
- 👤 Ulrich Eichenauer
- 👤 Norbert Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:22
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/10; B32B3/12; B29; B29C; B29C43/00; B29C43/32; B29C43/52; B32B27/00; B32B27/06; B32B27/065; B32B37/00; B32B37/14; B32B37/146; B32B5/00; B32B5/18; B32B7/00; B32B7/04; B32B7/12; E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/36; E04C2/365; B29C33/00; B29C33/02; B29C33/08; B32B2305/00; B32B2305/02; B32B2305/024; B32B2307/00; B32B2307/30; B32B2307/306; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24174; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249985; Y10T428/249987; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
52 words
A multilayer panel comprising a core layer A with a honeycomb structure or a foam structure and at least one cover layer C made of a fiber-reinforced thermoplastic, wherein the layers A and C are bonded toe ach other by an adhesive B which is compatible with the thermoplastic of layer C.
Claim 2
Dependent Claim
52 words
A multilayer panel comprising a core layer A with a honeycomb structure or a foam structure and at least one cover layer C made of a fiber-reinforced thermoplastic, wherein the layers A and C are bonded toe ach other by an adhesive B which is compatible with the thermoplastic of layer C.
Claim 3
Dependent Claim
32 words
A multilayer panel as claimed in claim 1, wherein the adhesive B has only been applied at the contact lines between cover layer C and the cell walls of cover layer A.
Claim 4
Dependent Claim
15 words
A multilayer panel as claimed in claim 1, wherein adhesive B is an adhesive film.
Claim 5
Dependent Claim
26 words
A multilayer panel as claimed in claim 1, wherein the thermoplasic is a temperature-resistant thermoplastic, preferably a polyether sulfone, polyether ketone, polyphenylene sulfide, polyamide or polyimide.
Claim 6
Dependent Claim
36 words
A process for producing the multilayer panel of claim 1, which comprises placing the layers between two thin, low-mass hotplates of a resistance heater, heating, pressing, and cooling for a cooling time of a few seconds.
Claim 7
Dependent Claim
26 words
A process for producing the multilayer panel of claim 1, wherein the layers are heated in a hot double belt press, pressed together and then cooled.
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) | 1995-02-10 | 1995-08-12 | 1996-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-10 | 1999-08-12 | 2000-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-10 | 2003-08-12 | 2004-02-11 | $7700.00 | Window Closed / Lapsed |