Patent US2577936A successfully refreshed from Google Patents.
US2577936A
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Colored glass fiber product and method for making same
Assignee: Owens Corning
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Filing: 1949-05-07
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Granted: 1951-12-11
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Expires: 1969-05-07
Abstract
No abstract record available.
Inventors
- 👤 Jack H Waggoner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:32
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/42; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/294; Y10T428/2958; Y10T428/2964; Y10T442/00; Y10T442/20; Y10T442/2352; Y10T442/273; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
THE METHOD OF COLORING GLASS FIBERS WHICH CONSISTS IN CONTACTING THE GLASS FIBER SURFACES WITH THE VAPORS OF A DECOMPOSABLE SALT OF A POLYVALENT METAL, THE OXIDES OF WHICH ARE COLORED, WHILE HEATING THE GLASS FIBERS UNDER NORMAL ATMOSPHERIC CONDITIONS TO A TEMPERATURE OF AT LEAST 600* F. BUT BELOW THE FUSION TEMPERATURE OF THE GLASS COMPOSITION OF WHICH THE FIBRS ARE FROM FOR 3-5 MINUTES AT THE LOWER TEMPERATURE TO NO MORE THAN A FEW SECONDS AT THE HIGHER TEMPERATURE.
Claim 2
Independent Claim
81 words
THE METHOD OF COLORING GLASS FIBERS WHICH CONSISTS IN CONTACTING THE GLASS FIBER SURFACES WITH THE VAPORS OF A DECOMPOSABLE SALT OF A POLYVALENT METAL, THE OXIDES OF WHICH ARE COLORED, WHILE HEATING THE GLASS FIBERS UNDER NORMAL ATMOSPHERIC CONDITIONS TO A TEMPERATURE OF AT LEAST 600* F. BUT BELOW THE FUSION TEMPERATURE OF THE GLASS COMPOSITION OF WHICH THE FIBRS ARE FROM FOR 3-5 MINUTES AT THE LOWER TEMPERATURE TO NO MORE THAN A FEW SECONDS AT THE HIGHER TEMPERATURE.
References Cited (Backward Citations)
US2392805A
Cited
US2428600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |