Patent US3493406A successfully refreshed from Google Patents.
US3493406A
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Gelling reagents for soluble silicates
Assignee: Progil SARL
•
Filing: 1966-11-29
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Granted: 1970-02-03
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Expires: 1986-11-29
Abstract
No abstract record available.
Inventors
- 👤 Pierre Fillet
- 👤 Bernard Bonnel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:50
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/04; C04B24/045; C01; C01B; C01B33/00; C01B33/20; C01B33/32; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C04B28/00; C04B28/24; C04B28/26; Y; Y10; Y10S; Y10S106/00; Y10S106/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2766130A
Cited
US2809118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |