US2839424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of providing glass fibers with plural superimposed different oxide coatings and products thereby produced
Assignee: LOF GLASS FIBERS CO
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Filing: 1955-08-10
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Granted: 1958-06-17
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Expires: 1975-08-10
Abstract
No abstract record available.
Inventors
- 👤 Labino Dominick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:43
CPC Classifications
C; C03; C03C; C03C21/00; C03C25/00; C03C25/10; C03C25/42; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A MASS OF FIBERS OF MICRO DIAMETER WHICH FIBERS ARE COMPOSED OF SILICA, SAID FIBERS HAVING A FIRST COATING OF AN OXIDE OF A METAL SELECTED FROM THE SECOND GROUP OF THE PERIODIC TABLE AND SECOND COATING OF A TEMPERATURE-RESISTANT WATER INSOLUBLE OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, COBALT, ALUMINUM, TIN AND IRON.
Claim 2
Dependent Claim
58 words
A MASS OF FIBERS OF MICRO DIAMETER WHICH FIBERS ARE COMPOSED OF SILICA, SAID FIBERS HAVING A FIRST COATING OF AN OXIDE OF A METAL SELECTED FROM THE SECOND GROUP OF THE PERIODIC TABLE AND SECOND COATING OF A TEMPERATURE-RESISTANT WATER INSOLUBLE OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, COBALT, ALUMINUM, TIN AND IRON.
References Cited (Backward Citations)
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Cited
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US2331944A
Cited
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Cited
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Cited
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Cited
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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) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |