US3044888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass fiber
Assignee: Houze Glass Corp
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Filing: 1960-07-05
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Granted: 1962-07-17
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Expires: 1980-07-05
Abstract
No abstract record available.
Inventors
- 👤 Jason D Provance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:32
CPC Classifications
C; C03; C03C; C03C13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A HIGH TENSILE LONG STABLE GLASS FIBER OF IMPROVED HEAT RESISTANCE HAVING A MINIMUM FIBER SOFTENING TEMPERATURE FROM ABOUT 1600* F. TO ABOUT 2400* F. CONSISTING ESSENTIALLY OF ABOUT 30% TO 40% ALUMINUM OXIDE ABOUT 40% TO 50% SILICA, ABOUT 0.5% TO 8% ZIRCONIUM OXIDE, ABOUT 3% TO 24% MAGNESIUM OXIDE, LESS THAN ABOUT 6.0% SODIUM OXIDE, WITH USUAL IMPURITIES IN ORDINARY AMOUNTS.
Claim 2
Dependent Claim
63 words
A HIGH TENSILE LONG STABLE GLASS FIBER OF IMPROVED HEAT RESISTANCE HAVING A MINIMUM FIBER SOFTENING TEMPERATURE FROM ABOUT 1600* F. TO ABOUT 2400* F. CONSISTING ESSENTIALLY OF ABOUT 30% TO 40% ALUMINUM OXIDE ABOUT 40% TO 50% SILICA, ABOUT 0.5% TO 8% ZIRCONIUM OXIDE, ABOUT 3% TO 24% MAGNESIUM OXIDE, LESS THAN ABOUT 6.0% SODIUM OXIDE, WITH USUAL IMPURITIES IN ORDINARY AMOUNTS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |