US4548854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceiling product
Assignee: Armstrong World Industries Inc
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Filing: 1985-03-08
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Granted: 1985-10-22
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Expires: 2005-03-08
Abstract
Abstract An improved ceiling panel especially useful in mobile residential or commercial structures is provided wherein said ceiling panel has on one surface (usually the back surface) a moisture barrier comprising a cured coating of an aqueous emulsion of slack wax, an emulsifier of triethanolamine and stearic acid, and silicone.
Inventors
- 👤 Thaddeus F. Wach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:21
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/04; E04B9/045; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31801
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
80 words
A ceiling panel of fibrous construction having a decorative surface adapted to face a room environment and a second surface adapted to face a plenum area wherein said second surface has a moisture barrier comprising about 2 grams per square foot of a dried coating of an aqueous emulsion consisting essentially of a slack wax and triethanolamine with stearic acid, and an amount of silicone resin, the upper limit of which is 5% by weight of the total emulsion weight.
Claim 2
Dependent Claim
80 words
A ceiling panel of fibrous construction having a decorative surface adapted to face a room environment and a second surface adapted to face a plenum area wherein said second surface has a moisture barrier comprising about 2 grams per square foot of a dried coating of an aqueous emulsion consisting essentially of a slack wax and triethanolamine with stearic acid, and an amount of silicone resin, the upper limit of which is 5% by weight of the total emulsion weight.
Claim 3
Dependent Claim
35 words
The ceiling panel of claim 1 wherein said aqueous emulsion comprises up to about 60% by weight of slack wax and up to about 10% by weight of the emulsifier of triethanolamine and stearic acid.
Claim 4
Dependent Claim
18 words
The ceiling panel of claim 2 wherein the weight ratio of triethanolamine-to-stearic acid ranges between 0.5:1 to 3:1.
Claim 5
Independent Claim
58 words
A method for moisture-proofing a ceiling panel of fiber construction comprising applying to one surface of said panel an aqueous emulsion consisting essentially of a slack wax, triethanolamine and stearic acid, and an amount of silicone resin, the upper limit of which is 5% by weight of the total emulsion weight, and thereafter drying said coated ceiling panel.
Claim 6
Independent Claim
58 words
A method for moisture-proofing a ceiling panel of fiber construction comprising applying to one surface of said panel an aqueous emulsion consisting essentially of a slack wax, triethanolamine and stearic acid, and an amount of silicone resin, the upper limit of which is 5% by weight of the total emulsion weight, and thereafter drying said coated ceiling panel.
Claim 7
Dependent Claim
34 words
The method of claim 4 wherein said aqueous emulsion comprises up to about 60% by weight of slack wax and up to about 10% by weight of the emulsifier of triethanolamine and stearic acid.
Claim 8
Dependent Claim
18 words
The method of claim 4 wherein said coated panel is dried at a temperature up to 125° F.
Claim 9
Dependent Claim
34 words
The method of claim 6 wherein said aqueous emulsion comprises up to about 60% by weight of slack wax and up to about 10% by weight of the emulsifier of triethanolamine and stearic acid.
Claim 10
Dependent Claim
17 words
The method of claim 7 wherein the weight ratio of triethanolamine-to-stearic acid ranges between 0.5:1 to 3:1.
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) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |