Patent FR977799A successfully refreshed from Google Patents.
US2608499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat treated glass fabric
Assignee: Westinghouse Electric Corp
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Filing: 1946-09-12
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Granted: 1952-08-26
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Expires: 1966-09-12
Abstract
No abstract record available.
Inventors
- 👤 Cyril J Straka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:25
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/40; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
138 words
A HIGH BOND STRENGTH LAMINATE COMPRISING, IN COMBINATION, A PLURALITY OF SHEETS OF GLASS FIBERS, THE SHEETS OF GLASS FIBERS DERIVED BY APPLYING TO GLASS FIBERS COATED WITH AN ORGANIC HYDROCARBON-OXYGEN LUBRICANT A COATING OF A LIQUID PHENYL METHYL SILOXANE IN AN AMOUNT EQUAL TO FROM 5% TO 15% OF THE WEIGHT OF THE SHEETS, AND HEAT TREATING THE GLASS FIBERS SO COATED AT A TEMPERATURE OF FROM 300* C. TO 450* C. FOR A PERIOD OF TIME SUFFICIENT TO VOLATILIZE AND CARBONIZE THE ORGANIC LUBRICANT, THE TIME BEING INVERSELY PROPORTIONAL TO THE TEMPERATURE, AND THE TIME BEING OF THE ORDER OF THREE MNUTES AT A TEMPERATURE OF FROM 320* C. 380* C., AND ADDITIONAL AMOUNTS OF A POLYMERIZED PHENYL METHYL SILOXANE APPLIED TO THE SHEETS OF GLASS FIBERS TO IMPREGNATE AND TO BOND THEM INTO THE LAMINATE.
References Cited (Backward Citations)
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US2258218A
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US2386466A
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US2390370A
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US2392805A
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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) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |