Patent US3081179A successfully refreshed from Google Patents.
US3081179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass fiber composition
Assignee: Union Carbide Corp
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Filing: 1961-05-29
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Granted: 1963-03-12
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Expires: 1981-05-29
Abstract
No abstract record available.
Inventors
- 👤 Fedia R Charvat
- 👤 Fentzke A Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:21
CPC Classifications
C; C03; C03C; C03C13/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
AS AN ARTICLE OF MANUFACTURE, RESILIENT, CORROSIONRESISTANT ATTENUATED GLASS FIBERS CONSISTING ESSENTIALLY OF FROM ABOUT 30 TO 48 PERCENT SIO2, FROM ABOUT I3 TO ABOUT 34 PERCENT AL2O3, FROM ABOUT 15 TO 25 PERCENT IN THE AGGREGATE OF CAO AND BAO, UP TO ABOUT 12 PERCENT MGO, AND FROM ABOUT 3 TO ABOUT 20 PERCENT MNO.
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |