Patent US3523803A successfully refreshed from Google Patents.
US3523803A
Expired / Lapsed
US
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Manufacture of borosilicate glass fibers
Assignee: Compagnie de Saint Gobain SA
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Filing: 1965-04-27
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Granted: 1970-08-11
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Expires: 1985-04-27
Abstract
No abstract record available.
Inventors
- 👤 Claude Haslay
- 👤 Jean Paymal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:36
CPC Classifications
C; C03; C03C; C03C13/00; C03C3/00; C03C3/04; C03C3/076; C03C3/11; C03C3/112; C03C3/115; C03C3/118; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2877124A
Cited
US3085887A
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US3013888A
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US3095311A
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FR1322725A
Cited
US3166428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |