Patent US4852316A successfully refreshed from Google Patents.
US4852316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exterior wall panel
Assignee: Composite Panel Manufacturing Inc
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Filing: 1987-11-13
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Granted: 1989-08-01
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Expires: 2007-11-13
Abstract
Abstract A building curtain wall panel system is disclosed in which a plurality of mechanically fastened and bonded layers are provided to create a fire resistant, light weight and insulated panel which is easily installed and yet resists impact stress. The panel includes bonded layers attached to a steel frame. The strength and fire resistant properties are enhanced by a medium density calcium silicate composite panel. The exterior architectural design features may be varied by composite coatings including a variety of materials including acrylic resins, fibers, vicron, fungicide, coloring agents, cement and water.
Inventors
- 👤 William Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:14
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/88; E04B2/90
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
53 words
A building curtain wall panel system for use in building construction comprising: a plurality of adjacent, superimposed layered panels attached to a steel stud frame, said layered panels including sequentially a phenolic foam insulation layer, a medium density calcium silicate composite panel, a sizing layer, Fiberglas mesh, a composite coating, and a sealer.
Claim 2
Dependent Claim
53 words
A building curtain wall panel system for use in building construction comprising: a plurality of adjacent, superimposed layered panels attached to a steel stud frame, said layered panels including sequentially a phenolic foam insulation layer, a medium density calcium silicate composite panel, a sizing layer, Fiberglas mesh, a composite coating, and a sealer.
Claim 3
Dependent Claim
27 words
The panel system according to claim 1 wherein the medium density calcium silicate composite panel comprises a mixture of cement, mineral fillers and treated natural organic fibers.
Claim 4
Dependent Claim
25 words
The panel system according to claim 1 wherein the composite coating includes a mixture of acrylic resin, fiber, vicron, fungicide, coloring agents, cement and water.
Claim 5
Dependent Claim
41 words
The panel according to claim 1 wherein the medium density calcium silicate composite panel comprises: Portland Cement, mineral fillers, treated natural organic, and fibers; and the composite coating comprises; acrylic resin, fibres, vicron, and a fungicide, coloring agents, cement and water.
Claim 6
Dependent Claim
21 words
The panel system according to claim 1 wherein said phenolic foam insulation has an R-value of at least 8.3 per inch.
References Cited (Backward Citations)
US4738065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-31 | 1993-01-30 | 1993-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-31 | 1997-01-30 | 1997-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-31 | 2001-01-30 | 2001-08-01 | $7700.00 | Window Closed / Lapsed |