US2582919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coloring glass fibers
Assignee: Owens Corning
•
Filing: 1946-08-28
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Granted: 1952-01-15
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Expires: 1966-08-28
Abstract
No abstract record available.
Inventors
- 👤 Lawrence P Biefeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:54
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/465; C03C25/475; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2971
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
THE METHOD OF COLORING GLASS FIBROUS COMPRISING SUBJECTING GLASS FIBROUS CONSTITUTED WITH SILICEOUS AND NON-SILCEOUS MATERIALS TO REACTION WITH DILUTE ACID SOLUTIONS THAT PREFERENTIALLY DISSOLVE THE NON-SILICEOUS COMPONENT UNTIL SOLUTION OF LESS THAN 25 PERCENT BY WEIGHT OF THE GLASS FIBERS HAS BEEN EFFECTED, REMOVING THE SOLUTION AND DISSOLVED SUBSTANCES TO PRESENT GLASS FIBERS HAVING HIGHLY POROUS SURFACES, AND THEN TREATING THE FIBERS TO EMBED COLORED PARTICLES WITHIN THE PORES.
Claim 2
Independent Claim
70 words
THE METHOD OF COLORING GLASS FIBROUS COMPRISING SUBJECTING GLASS FIBROUS CONSTITUTED WITH SILICEOUS AND NON-SILCEOUS MATERIALS TO REACTION WITH DILUTE ACID SOLUTIONS THAT PREFERENTIALLY DISSOLVE THE NON-SILICEOUS COMPONENT UNTIL SOLUTION OF LESS THAN 25 PERCENT BY WEIGHT OF THE GLASS FIBERS HAS BEEN EFFECTED, REMOVING THE SOLUTION AND DISSOLVED SUBSTANCES TO PRESENT GLASS FIBERS HAVING HIGHLY POROUS SURFACES, AND THEN TREATING THE FIBERS TO EMBED COLORED PARTICLES WITHIN THE PORES.
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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) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |