US4587164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof deck composite panels
Assignee: Dow Chemical Co
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Filing: 1985-04-29
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Granted: 1986-05-06
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Expires: 2005-04-29
Abstract
Abstract A composite panel is provided primarily for roof deck construction comprising three sub-panels or strata. The first sub-panel comprises aspen wood fibers bonded with a magnesium oxysulfate inorganic cement and further including a sodium silicate binder. The second sub-panel comprises a foam plastic closed cell insulation, preferably polystyrene. The third sub-panel comprises a waferboard comprising wood chips bonded with a phenolic resin. The three sub-panels are bonded together with a urethane based adhesive.
Inventors
- 👤 Thurman W. Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:12
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/20; E04B7/22; E04D; E04D3/00; E04D3/35; E04D3/351; E04D3/352; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249976; Y10T428/249982; Y10T428/249985; Y10T428/249987; Y10T428/24999
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
49 words
A composite panel comprising a first sub-panel comprising wood fibers bonded with an inorganic cement comprising magnesium oxysulfate, a second sub-panel bonded to said first sub-panel and comprising a foam resinous plastic insulation, and a third sub-panel bonded to said second sub-panel and comprising a resin bonded wood product.
Claim 2
Dependent Claim
49 words
A composite panel comprising a first sub-panel comprising wood fibers bonded with an inorganic cement comprising magnesium oxysulfate, a second sub-panel bonded to said first sub-panel and comprising a foam resinous plastic insulation, and a third sub-panel bonded to said second sub-panel and comprising a resin bonded wood product.
Claim 3
Dependent Claim
30 words
A composite panel as set forth in claim 1 wherein the fibers of said first sub-panel comprise wood fibers, and further including in said first sub-panel a sodium silicate binder.
Claim 4
Dependent Claim
20 words
A composite panel as set forth in claim 1 wherein said second sub-panel comprises a closed cell polystyrene foam insulation.
Claim 5
Dependent Claim
45 words
A composite panel as set forth in claim 1 and further including a sodium silicate binder, said second sub-panel comprising a closed cell polystyrene foam insulation, said third sub-panel comprising a waferboard, and said panels being bonded to one another by a urethane based adhesive.
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) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |