US4077168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Predecorated gypsum wallboard for impermeable wall
Assignee: National Gypsum Co
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Filing: 1977-01-27
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Granted: 1978-03-07
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Expires: 1997-01-27
Abstract
Abstract An exterior wall or a roof-ceiling structure having, on the interior side, a wallboard with a front face which forms the interior wall or ceiling surface and a back face, which is adhered to wall framing members. The back face has a paper-foil laminate which is adhered to the basic board back side, with the foil side of the laminate adhered directly to the basic board back side. The paper side of the laminate is adhered directly to the wall framing members.
Inventors
- 👤 Richard E. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:15
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/04; E04B9/045; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/043; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31703
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
75 words
A vapor impermeable wallboard suitable for being adhesively applied to framing comprising a basic board having a front face and a back face, said basic board having a laminate of paper and an air impermeable film adhered to said back face, with the air impermeable film side of said laminate adhered directly to said basic board back face, and said paper side of said laminate forming an adhesive-receptive back surface of said vapor impermeable wallboard.
Claim 2
Dependent Claim
75 words
A vapor impermeable wallboard suitable for being adhesively applied to framing comprising a basic board having a front face and a back face, said basic board having a laminate of paper and an air impermeable film adhered to said back face, with the air impermeable film side of said laminate adhered directly to said basic board back face, and said paper side of said laminate forming an adhesive-receptive back surface of said vapor impermeable wallboard.
Claim 3
Dependent Claim
14 words
The wallboard of claim 1 wherein said air impermeable film is a metal foil.
Claim 4
Dependent Claim
34 words
The wallboard of claim 2 wherein said basic board comprises a gypsum core, a back paper liner and a front paper liner, and wherein said foil-paper laminate is adhered to said back paper liner.
Claim 5
Dependent Claim
29 words
The wallboard of claim 3 wherein said foilpaper laminate is adhered to said back paper liner with an adhesive which is uniformly spread throughout the area of said laminate.
Claim 6
Dependent Claim
14 words
The wallboard of claim 1 wherein said laminate consists of paper and aluminum foil.
Claim 7
Dependent Claim
16 words
The wallboard of claim 5 wherein said aluminum foil has a thickness of about 0.00025 inch.
Claim 8
Dependent Claim
14 words
The wallboard of claim 5 wherein said paper is a 20 pound Kraft paper.
Claim 9
Dependent Claim
39 words
A vapor impermeable wall comprising framing members, and a plurality of wallboards as defined in claim 1, said wallboards being affixed to said framing members by adhesives bonded to said framing members and to the paper of said laminate.
Claim 10
Dependent Claim
20 words
A wall as defined in claim 8 wherein said wallboards comprise a basic board which is a paper-covered gypsum wallboard.
Claim 11
Dependent Claim
27 words
A wall as defined in claim 9 wherein said paper-covered gypsum wallboard has a predecorated front face paper which is undisturbed by the erection of said wallboard.
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) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |