US2692219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural panel
Assignee: Owens Corning
•
Filing: 1951-07-05
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Granted: 1954-10-19
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Expires: 1971-07-05
Abstract
No abstract record available.
Inventors
- 👤 Slayter Games
- 👤 Marshall C Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:09
CPC Classifications
B; B32; B32B; B32B27/00; C; C04; C04B; C04B28/00; C04B28/30; C04B2111/00; C04B2111/52; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24033; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24942; Y10T428/24992; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/24999; Y10T428/249991; Y10T428/25; Y10T428/258; Y10T428/259
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A STRUCTURAL BOARD COMPRISING A CORE OF GLASS FIBER BONDED INTO A POROUS LAYER AND A LAYER OF AN INORGANIC CEMENTITIOUS COMPOSITION INTEGRATED WITH THE SURFACE AND FORMED OF COMPONENTS PRESENT IN THE RATIO OF 3-9 MOLECULAR EQUIVALENTS MAGNESIUM OXIDE TO ONE MOLECULAR EQUIVALENTS MAGNESIUM SULPHATE, SILICEOUS AGGREGATE AND REINFORCING GLASS FIBERS PRESENT IN AN AMOUNT RANGING FROM 1 TO 10 PERCENT BY WEIGHT.
Claim 2
Dependent Claim
64 words
A STRUCTURAL BOARD COMPRISING A CORE OF GLASS FIBER BONDED INTO A POROUS LAYER AND A LAYER OF AN INORGANIC CEMENTITIOUS COMPOSITION INTEGRATED WITH THE SURFACE AND FORMED OF COMPONENTS PRESENT IN THE RATIO OF 3-9 MOLECULAR EQUIVALENTS MAGNESIUM OXIDE TO ONE MOLECULAR EQUIVALENTS MAGNESIUM SULPHATE, SILICEOUS AGGREGATE AND REINFORCING GLASS FIBERS PRESENT IN AN AMOUNT RANGING FROM 1 TO 10 PERCENT BY WEIGHT.
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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) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |