US2754221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating glass fibers with a composition including colloidal silica and article produced thereby
Assignee: Owens Corning
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Filing: 1952-01-31
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Granted: 1956-07-10
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Expires: 1972-01-31
Abstract
No abstract record available.
Inventors
- 👤 Remus F Caroselli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:33
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/42; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
IN THE PREPARATION OF A GLASS FIBER PRODUCT, THE STEP OF HEATING GLASS FIBERS WITH COLLOIDAL SILICA AND POLYVALENT METALLIC SALT HAVING A METALLIC COMPONENT THE OXIDES OF WHICH ARE COLORED DISTRIBUTED OVER THE SURFACES AT A TEMPERATURE WITHIN THE RANGE OF 50* F. BELOW THE FUSION TEMPERATURE FOR THE GLASS COMPOSITION OF WHICH THE FIBERS ARE FORMED TO 400* F. WHEREBY THE SALT IS CONVERTED TO THE COLORED OXIDE AND THE SILICA BECOMES STRONGLYBONDED TO THE GLASS FIBER SURFACES.
Claim 2
Dependent Claim
80 words
IN THE PREPARATION OF A GLASS FIBER PRODUCT, THE STEP OF HEATING GLASS FIBERS WITH COLLOIDAL SILICA AND POLYVALENT METALLIC SALT HAVING A METALLIC COMPONENT THE OXIDES OF WHICH ARE COLORED DISTRIBUTED OVER THE SURFACES AT A TEMPERATURE WITHIN THE RANGE OF 50* F. BELOW THE FUSION TEMPERATURE FOR THE GLASS COMPOSITION OF WHICH THE FIBERS ARE FORMED TO 400* F. WHEREBY THE SALT IS CONVERTED TO THE COLORED OXIDE AND THE SILICA BECOMES STRONGLYBONDED TO THE GLASS FIBER SURFACES.
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) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |