Patent US4344495A successfully refreshed from Google Patents.
Patent US4603078A successfully refreshed from Google Patents.
US4603078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction panel made of polyurethane integral hard foam
Assignee: Fulgurit GmbH and Co KG
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Filing: 1984-04-18
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Granted: 1986-07-29
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Expires: 2004-04-18
Abstract
Abstract A polyurethane integral hard foam construction panel comprises a denser edge zone and a porous core, the surface of the construction panel being enameled, and is used as a roofing plate, in particular as a small format, nailed roof cover plate. For that purpose the invention provides that the polyurethane integral hard foam of the construction panel includes fillers, namely 1 to 65% by weight flame-retardants such as aluminum hydroxide [Al(OH) 3 ] and/or Exolite and 1 to 90% slate powder.
Inventors
- 👤 Helmut Zanker
- 👤 Joachim Kleiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:08
CPC Classifications
E; E04; E04D; E04D1/00; E04D1/28; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/205; E04D3/00; E04D3/35; E04D3/351; E04D3/352; Y; Y10; Y10S; Y10S521/00; Y10S521/906; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249986; Y10T428/249987; Y10T428/249988; Y10T428/249989; Y10T428/249991
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
76 words
In a construction panel made of polyurethane integral hard foam and comprising a denser edge zone and a porous core, the construction panel surface being enameled, the improvement comprising said polyurethane integral hard foam of the construction panel including fillers, namely flame-retardants comprising 5 to 65% by weight aluminum hydroxide, and 30 to 90% by weight of slate powder with a relatively high proportion of slate powder being provided for a relatively low proportion of flame-retardants.
Claim 2
Dependent Claim
76 words
In a construction panel made of polyurethane integral hard foam and comprising a denser edge zone and a porous core, the construction panel surface being enameled, the improvement comprising said polyurethane integral hard foam of the construction panel including fillers, namely flame-retardants comprising 5 to 65% by weight aluminum hydroxide, and 30 to 90% by weight of slate powder with a relatively high proportion of slate powder being provided for a relatively low proportion of flame-retardants.
Claim 3
Dependent Claim
18 words
The construction of claim 1, further comprising said fillers, comprising 5 to 25% by weight of ammonium polyphosphate.
Claim 4
Dependent Claim
21 words
The construction panel of claim 2, wherein said polyurethane integral hard foam contains 60 to 90% by weight of slate powder.
Claim 5
Dependent Claim
21 words
The construction panel of claim 2, wherein said polyurethane integral hard foam contains 30 to 65% by weight of slate powder.
Claim 6
Dependent Claim
85 words
In a construction panel made of polyurethane integral hard foam and comprising a denser edge zone and a porous core, the construction panel surface being enameled, the improvement comprising said polyurethane integral hard foam of the construction panel including fillers, namely flame-regardants comprising 5 to 65% by weight aluminum hydroxide and 30 to 90% by weight of granular and fibrous materials selected from the group consisting of quartz sand, calcium carbonate, slag, glass, silicon, boron, carbon soot, cellulose, cellulose derivatives, polystyrene, acrylonitrile-butadiene-styrene, polyamide, and polyester.
Claim 7
Dependent Claim
85 words
In a construction panel made of polyurethane integral hard foam and comprising a denser edge zone and a porous core, the construction panel surface being enameled, the improvement comprising said polyurethane integral hard foam of the construction panel including fillers, namely flame-regardants comprising 5 to 65% by weight aluminum hydroxide and 30 to 90% by weight of granular and fibrous materials selected from the group consisting of quartz sand, calcium carbonate, slag, glass, silicon, boron, carbon soot, cellulose, cellulose derivatives, polystyrene, acrylonitrile-butadiene-styrene, polyamide, and polyester.
Claim 8
Dependent Claim
19 words
The construction panel of claim 5, further comprising said fillers comprising 5 to 25% by weight of ammonium polyphosphate.
Claim 9
Dependent Claim
36 words
The construction panel of claim 2, wherein said construction panel consists of 30% by weight polyurethane integral hard foam, 10 percent by weight aluminum hydroxide, 15% by weight ammonium polyphosphate and 45% by weight slate powder.
Claim 10
Dependent Claim
39 words
The construction panel of claim 6, wherein said construction panel consists of 30% by weight polyurethane integral hard foam, 10% by weight aluminum hydroxide, 15% by weight ammonium polyphosphate and 45% by weight of said granular and fibrous materials.
Claim 11
Dependent Claim
35 words
The construction panel of claim 2, wherein said construction panel consists of 20% by weight polyurethane integral hard foam, 10% by weight aluminum hydroxide, 15% by weight ammonium polyphosphate, and 55% by weight slate powder.
Claim 12
Dependent Claim
39 words
The construction panel of claim 6, wherein said construction panel consists of 20% by weight polyurethane integral hard foam, 10% by weight aluminum hydroxide, 15% by weight ammonium polyphosphate and 55% by weight of said granular and fibrous materials.
Claim 13
Dependent Claim
35 words
The construction panel of claim 2, wherein said construction panel consists of 20% by weight polyurethane integral hard foam, 10% by weight aluminum hydroxide, 5% by weight ammonium polyphosphate and 65% by weight slate powder.
Claim 14
Dependent Claim
39 words
The construction panel of claim 6, wherein said construction panel consists of 20% by weight polyurethane integral hard foam, 10% by weight aluminum hydroxide, 5% by weight ammonium polyphosphate and 65% by weight of said granular and fibrous materials.
Claim 15
Dependent Claim
14 words
The construction panel of claim 2, wherein said enamel is a two component enamel.
Claim 16
Dependent Claim
14 words
The construction panel of claim 6, wherein said enamel is a two component enamel.
Claim 17
Dependent Claim
15 words
The construction panel of claim 2, wherein said enamel is a single component synthetic resin.
Claim 18
Dependent Claim
15 words
The construction panel of claim 6, wherein said enamel is a single component synthetic resin.
Claim 19
Dependent Claim
66 words
In a process for manufacturing a construction panel made of polyurethane integral foam having a denser edge zone and a porous core and an enameled panel surface, the improvement comprising: mixing 5 to 65% by weight aluminum hydroxide, 5 to 25% by weight of ammonium polyphosphate, and 30 to 90% by weight of slate powder with polyol, adding isocyanate to the mixture, and foaming the panel.
Claim 20
Dependent Claim
66 words
In a process for manufacturing a construction panel made of polyurethane integral foam having a denser edge zone and a porous core and an enameled panel surface, the improvement comprising: mixing 5 to 65% by weight aluminum hydroxide, 5 to 25% by weight of ammonium polyphosphate, and 30 to 90% by weight of slate powder with polyol, adding isocyanate to the mixture, and foaming the panel.
Claim 21
Dependent Claim
15 words
The process of claim 17 wherein said enameled panel surface is achieved by in-mold coating.
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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) | 1989-07-28 | 1990-01-27 | 1990-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-28 | 1994-01-27 | 1994-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-28 | 1998-01-27 | 1998-07-29 | $7700.00 | Window Closed / Lapsed |