US2717841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonded glass fiber product and method of making same
Assignee: Owens Corning
•
Filing: 1951-01-09
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Granted: 1955-09-13
•
Expires: 1971-01-09
Abstract
No abstract record available.
Inventors
- 👤 Lawrence P Biefeld
- 👤 Marshall C Armstrong
- 👤 Richard F Shannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:00
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/30; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/268; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2933
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
49 words
AN ARTICLE OF MANUFACTURE COMPRISING A POROUS HARD, BOARD-LIKE MEMBER CONSISTING ESSENTIALLY OF GLASS FIBERS BONDED WITH AN INORGANIC CEMENT SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM OXYCHLORIDE AND MAGNESIUM OXYSULPHATE AND PRESENT IN THE RATIO OF 1 PART BY WEIGHT GLASS FIBERS TO 1.5-6 PARTS BY WEIGHT CEMENT.
Claim 2
Dependent Claim
49 words
AN ARTICLE OF MANUFACTURE COMPRISING A POROUS HARD, BOARD-LIKE MEMBER CONSISTING ESSENTIALLY OF GLASS FIBERS BONDED WITH AN INORGANIC CEMENT SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM OXYCHLORIDE AND MAGNESIUM OXYSULPHATE AND PRESENT IN THE RATIO OF 1 PART BY WEIGHT GLASS FIBERS TO 1.5-6 PARTS BY WEIGHT CEMENT.
Claim 3
Independent Claim
91 words
THE METHOD OF MANUFACTURING A POROUS STRUCTURAL BOARD COMPRISING THE STEPS OF APPLYING A SLURRY OF A CEMENT COMPSOITION SELECTED OF THE GROUP CONSISTING OF MAGNESIUM OXYCHLORIDE AND MAGNESIUM OXYSULPHATE IN EXCESS OF AN AMOUNT THAT IS DESIRES TO HAVE REMAIN IN THE BOARD ONTO ONE WALL OF A POROUS GLASS FIBER MASS, DRAWING OFF THE SLURRY IN EXCESS OF THAT TO PROVIDE 1.5-6 PARTS BY WEIGHT CEMENT TO ONE PART BY WEIGHT GLASS FIBER THROUGH AN OPPOSITE WALL, AND THEN SETTING THE CEMENT THAT REMAINS DISTRIBUTED WITH THE GLASS FIBERS.
Claim 4
Independent Claim
91 words
THE METHOD OF MANUFACTURING A POROUS STRUCTURAL BOARD COMPRISING THE STEPS OF APPLYING A SLURRY OF A CEMENT COMPSOITION SELECTED OF THE GROUP CONSISTING OF MAGNESIUM OXYCHLORIDE AND MAGNESIUM OXYSULPHATE IN EXCESS OF AN AMOUNT THAT IS DESIRES TO HAVE REMAIN IN THE BOARD ONTO ONE WALL OF A POROUS GLASS FIBER MASS, DRAWING OFF THE SLURRY IN EXCESS OF THAT TO PROVIDE 1.5-6 PARTS BY WEIGHT CEMENT TO ONE PART BY WEIGHT GLASS FIBER THROUGH AN OPPOSITE WALL, AND THEN SETTING THE CEMENT THAT REMAINS DISTRIBUTED WITH THE GLASS FIBERS.
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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) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |