US3674542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass fibers sized with a composition comprising a vinylic aromatic-diolefin copolymer and a hydrolyzable silane
Assignee: PPG Industries Inc
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Filing: 1969-06-17
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Granted: 1972-07-04
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Expires: 1989-06-17
Abstract
Abstract THE DISCLOSED INVENTION RELATES TO A METHOD OF COATING GLASS FIBERS WITH A CARRIER MEDIUM HAVING 1-10% OF SOLID, NON-BLOCKING, UNSATURATED COPOLYMER OF A VINYL AROMATIC, A C4 TO C8 DIOLEIFN IN WHICH AT LEAST 50% OF THE UNSATURATION IS OF THE 1,2 OR 3,4 TYPE, THE AVERAGE MOLECULAR WEIGHT BEING ABOUT 1,000 TO 30,000, ADDITIONALLY THE CARRIER CONTAINS 0.2 TO 2% OF A HYDROLYZABLE SILANE.
Inventors
- 👤 Byron M Vanderbilt
- 👤 James J Fasnacht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:21
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C03C25/27; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962; Y10T428/2964
Claims Analysis
Total Claims: 0
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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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |