Patent JPS5895885A successfully refreshed from Google Patents.
Patent US4664955A successfully refreshed from Google Patents.
US4664955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Natural stone facing composite laminate
Assignee: SWISS ALUMINIUM Ltd A CORP OF SWITZERLAND
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Filing: 1986-03-21
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Granted: 1987-05-12
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Expires: 2006-03-21
Abstract
Abstract A composite laminate for use in the paneling of walls, ceilings and other surfaces such as furniture and the like comprises a polymeric sheet-like core having a pair of surfaces to which are bonded a metal foil so as to form a sandwich-type structure and wherein a lamina of natural facing stone is uniformly bonded to at least one of the pair of metal foils.
Inventors
- 👤 Chesley D. Clem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:19
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B9/00; B32B9/002; B32B9/04; B32B9/041; B44; B44C; B44C5/00; B44C5/06; B44F; B44F9/00; B44F9/04; E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/14; E04F13/144; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2307/50; B32B2307/558; B32B2419/00; B32B2419/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
69 words
A composite laminate comprising a polymeric sheet-like core having a pair of surfaces, a pair of metal foils uniformly bonded to said pair of surfaces of said polymeric sheet-like core so as to form a sandwich-type structure and a lamina comprising 70 to 80% of a natural facing stone and 20 to 30% of a matrix material uniformly bonded to at least one of said pair of metal foils.
Claim 2
Dependent Claim
69 words
A composite laminate comprising a polymeric sheet-like core having a pair of surfaces, a pair of metal foils uniformly bonded to said pair of surfaces of said polymeric sheet-like core so as to form a sandwich-type structure and a lamina comprising 70 to 80% of a natural facing stone and 20 to 30% of a matrix material uniformly bonded to at least one of said pair of metal foils.
Claim 3
Dependent Claim
21 words
A composite laminate according to claim 1 wherein the thickness of said polymeric sheet-like core is between 0.118 to 0.197 inches.
Claim 4
Dependent Claim
22 words
A composite laminate according to claim 2 wherein the thickness of each of said metal foils is between 0.019 to 0.020 inches.
Claim 5
Dependent Claim
23 words
A composite laminate according to claim 3 wherein the thickness of said lamina of natural facing stone is between 0.125 to 0.187 inches.
Claim 6
Dependent Claim
34 words
A composite laminate according to claim 4 wherein the ratio of the thickness of lamina of natural facing stone to the total thickness of said pair of metal foils is between 3:1 to 3.5:1.
Claim 7
Dependent Claim
31 words
A composite laminate according to claim 5 wherein the ratio of the thickness of lamina of natural facing stone to the thickness of said sandwich-type structure is between 1:1.2 to 1:1.4.
Claim 8
Dependent Claim
32 words
A composite laminate according to claim 5 wherein the ratio of the thickness of said polymeric sheet-like core to the thickness of each of said metal foils is between 6:1 to 8:1.
Claim 9
Dependent Claim
31 words
A composite laminate according to claim 7 wherein the ratio of the thickness of lamina of natural facing stone to the thickness of said sandwich-type structure is between 1:1.2 to 1:1.4.
Claim 10
Dependent Claim
179 words
A process for manufacturing a composite laminate comprising a polymeric sheet-like core having a pair of surfaces, a pair of metal foils uniformly bonded to said pair of surfaces of said polymeric sheet-like core so as to form a sandwich-type structure and a lamina of natural facing stone uniformly bonded to at least one of said pair of metal foils, comprising the steps of: (a) forming said sandwich-type structure by bonding said pair of metal foils to said pair of surfaces of said po1ymeric sheet-like core; (b) roughening the exposed surface of at least one of said pair of metal foils so as to remove any metal oxide coating and increase bonding area; (c) preparing a slurry comprising 70 to 80% natural facing stone and 20 to 30% of a matrix material selected from the group consisting of polyester, epoxy and or acrylics; (d) pouring and smoothing said slurry on said exposed surface of said at least one of said pair of metal foils; and (e) curing said poured and smoothed matrix in air so as to set same.
Claim 11
Dependent Claim
179 words
A process for manufacturing a composite laminate comprising a polymeric sheet-like core having a pair of surfaces, a pair of metal foils uniformly bonded to said pair of surfaces of said polymeric sheet-like core so as to form a sandwich-type structure and a lamina of natural facing stone uniformly bonded to at least one of said pair of metal foils, comprising the steps of: (a) forming said sandwich-type structure by bonding said pair of metal foils to said pair of surfaces of said po1ymeric sheet-like core; (b) roughening the exposed surface of at least one of said pair of metal foils so as to remove any metal oxide coating and increase bonding area; (c) preparing a slurry comprising 70 to 80% natural facing stone and 20 to 30% of a matrix material selected from the group consisting of polyester, epoxy and or acrylics; (d) pouring and smoothing said slurry on said exposed surface of said at least one of said pair of metal foils; and (e) curing said poured and smoothed matrix in air so as to set same.
Claim 12
Dependent Claim
45 words
A process according to claim 9 including the steps of priming said exposed surface of said at least one of said pairs of metal foils with an acrylic primer to a thickness of between 0.0005 to 0.0015 inches prior to pouring and smoothing said slurry.
Claim 13
Dependent Claim
26 words
A process according to claim 9 including the steps of pouring and smoothing said slurry in a reduced pressure environment of less than 3/4 atmospheric pressure.
Claim 14
Dependent Claim
38 words
A process according to claim 11 including the steps of curing said matrix in air at a temperature of between 60° to 75° F. at a humidity of between 40% to 60% for between 18 to 24 hours.
Claim 15
Dependent Claim
24 words
A composite laminate according to claim 1 wherein said matrix material is selected from the group consisting of polyester, epoxy, acrylics or mixtures thereof.
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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) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |