US4601150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roofing element and roof employing such element
Assignee: Dow Chemical Co
•
Filing: 1985-02-04
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Granted: 1986-07-22
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Expires: 2005-02-04
Abstract
Abstract A roofing panel is provided comprising a layer of closed cell plastic foam and a layer of mortar. A reinforcing grid is disposed within the mortar layer.
Inventors
- 👤 Cathy W. Dougherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:43
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/20; E04B7/22; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; E04C2/288; E04C5/00; E04C5/01; E04C5/02; E04C5/04; E04D; E04D13/00; E04D13/16; E04D13/1606; E04D13/1662; E04D3/00; E04D3/35; E04D3/351
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
128 words
In a laminate of an inorganic mortar and a closed cell synthetic resinous layer of generally planar configuration wherein a cementitious layer is affixed to a synthetic resinous foam layer to provide a laminate generally resistant to foot traffic when the cementitious layer is positioned in an uppermost position, the improvement which comprises incorporating within the cementitious layer a reticulate sheet, the sheet having a plurality of openings defined therein wherein the area of the openings is from about 50 to 98 percent of the area of the major surface of the reticulate sheet, the openings extending between first and second major surfaces of the reticulate sheet, a plurality of foam engaging means projecting outwardly from the sheet to thereby affix the reticulate sheet to the resinous layer.
Claim 2
Dependent Claim
128 words
In a laminate of an inorganic mortar and a closed cell synthetic resinous layer of generally planar configuration wherein a cementitious layer is affixed to a synthetic resinous foam layer to provide a laminate generally resistant to foot traffic when the cementitious layer is positioned in an uppermost position, the improvement which comprises incorporating within the cementitious layer a reticulate sheet, the sheet having a plurality of openings defined therein wherein the area of the openings is from about 50 to 98 percent of the area of the major surface of the reticulate sheet, the openings extending between first and second major surfaces of the reticulate sheet, a plurality of foam engaging means projecting outwardly from the sheet to thereby affix the reticulate sheet to the resinous layer.
Claim 3
Dependent Claim
15 words
The laminate of claim 1 wherein the reticulate sheet is a synthetic resinous reticulate sheet.
Claim 4
Dependent Claim
15 words
The laminate of claim 2 wherein the reticulate sheet is a thermoplastic synthetic resinous sheet.
Claim 5
Dependent Claim
16 words
The laminate of claim 3 wherein the reticulate sheet defines a plurality of generally rectangular openings.
Claim 6
Dependent Claim
14 words
The laminate of claim 3 wherein the sheet defines a plurality of circular openings.
Claim 7
Dependent Claim
17 words
The laminate of claim 3 wherein the reticulate sheet defines mechanical interlocking means for the inorganic mortar.
Claim 8
Dependent Claim
35 words
The laminate of claim 1 including a roof deck having disposed thereon a water impermeable membrane, the laminate being disposed over the membrane wherein the cementitious layer is positioned remote from the water impermeable membrane.
Claim 9
Dependent Claim
15 words
The laminate of claim 7 wherein the reticulate sheet is a synthetic resinous reticulate sheet.
Claim 10
Dependent Claim
15 words
The laminate of claim 7 wherein the reticulate sheet is a thermoplastic synthetic resinous sheet.
Claim 11
Dependent Claim
16 words
The laminate of claim 7 wherein the reticulate sheet defines a plurality of generally rectangular openings.
Claim 12
Dependent Claim
14 words
The laminate of claim 7 wherein the sheet defines a plurality of circular openings.
Claim 13
Dependent Claim
17 words
The laminate of claim 7 wherein the reticulate sheet defines mechanical interlocking means for the inorganic mortar.
References Cited (Backward Citations)
US720836A
Cited
US790260A
Cited
US1632497A
Cited
US3335048A
Cited
US3238682A
Cited
US3411256A
Cited
US3817012A
Cited
US4054691A
Cited
US4067164A
Cited
FR2404085A1
Cited
US4351138A
Cited
US4432177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-21 | 1998-01-20 | 1998-07-22 | $7700.00 | Window Closed / Lapsed |