Patent US2883296A successfully refreshed from Google Patents.
US2883296A
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Glass composition
Assignee: LOF GLASS FIBERS CO
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Filing: 1953-11-23
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Granted: 1959-04-21
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Expires: 1973-11-23
Abstract
No abstract record available.
Inventors
- 👤 Labino Dominick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:42
CPC Classifications
C; C03; C03C; C03C13/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
34 words
GLASS IN THE FORM OF FIBERS CONSISTING ESSSENTIALLY OF THE FOLLOWING INGREDIENTS IN THE INDICATED APPROXIMATE PERCENTAGE BY WEIGHT: PERCENT BIO2 66.4 B2O3 11.1 CAO 12.1 ALKALI METAL OXIDE 5.9 AL2O3 4.4 F2 0.1
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) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |