US3344574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building panel
Assignee: Dow Chemical Co
•
Filing: 1964-09-02
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Granted: 1967-10-03
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Expires: 1984-09-02
Abstract
No abstract record available.
Inventors
- 👤 Albert J Palfey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:21
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24174; Y10T428/24182
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A BUILDING PANEL COMPRISING AT LEAST A PAIR OF SPACED APART METALLIC FACING SHEETS, EACH OF THE SHEETS HAVING DEFINED THEREIN A PLURALITY OF RIB MEMBERS IN SPACED APART RELATIONSHIP OVER THE SHEET, EACH OF THE RIB MEMBERS PROJECTING TOWARD THE INSIDE OF THE PANEL AND EACH OF THE SPACED APART METALLIC SHEET HAVING A COATING ON THE INNER SURFACE THEREOF COMPRISING A LAYER OF AN INORGANIC NONFLAMMABLE NONMETALLIC MATERIAL, A PLURALITY OF CONNECTING MEMBERS IN SPACED APART RELATIONSHIP BETWEEN THE SHEETS, THE CONNECTING MEMBERS EXTENDING GENERALLY BETWEEN THE INORGANIC LAYERS ADJACENT THE FACING SHEETS AND SECURING THE LAYERS IN SPACED RELATIONSHIP, EACH OF THE CONNECTING MEMBERS BEING PARTIALLY EMBEDDED IN EACH OF THE LAYERS OF INORGANIC MATERIAL AND BEING IN SPACED RELATIONSHIP TO THE METALLIC FACING SHEETS.
Claim 2
Dependent Claim
128 words
A BUILDING PANEL COMPRISING AT LEAST A PAIR OF SPACED APART METALLIC FACING SHEETS, EACH OF THE SHEETS HAVING DEFINED THEREIN A PLURALITY OF RIB MEMBERS IN SPACED APART RELATIONSHIP OVER THE SHEET, EACH OF THE RIB MEMBERS PROJECTING TOWARD THE INSIDE OF THE PANEL AND EACH OF THE SPACED APART METALLIC SHEET HAVING A COATING ON THE INNER SURFACE THEREOF COMPRISING A LAYER OF AN INORGANIC NONFLAMMABLE NONMETALLIC MATERIAL, A PLURALITY OF CONNECTING MEMBERS IN SPACED APART RELATIONSHIP BETWEEN THE SHEETS, THE CONNECTING MEMBERS EXTENDING GENERALLY BETWEEN THE INORGANIC LAYERS ADJACENT THE FACING SHEETS AND SECURING THE LAYERS IN SPACED RELATIONSHIP, EACH OF THE CONNECTING MEMBERS BEING PARTIALLY EMBEDDED IN EACH OF THE LAYERS OF INORGANIC MATERIAL AND BEING IN SPACED RELATIONSHIP TO THE METALLIC FACING SHEETS.
References Cited (Backward Citations)
US1630857A
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US2103407A
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US2356309A
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US2699669A
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US2717664A
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US2804670A
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US3184013A
Cited
US2911076A
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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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |