US3375202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separating substances in solution as salts by using a colloidal dispersion of mixed ferrocyanides
Assignee: Saint Gobain Techniques Nouvelles SA
•
Filing: 1964-09-29
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Granted: 1968-03-26
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Expires: 1984-09-29
Abstract
No abstract record available.
Inventors
- 👤 Laveissiere Francoise
- 👤 Bonnin Andre
- 👤 Poirier Philippe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:51
CPC Classifications
C; C01; C01D; C01D17/00; G; G21; G21F; G21F9/00; G21F9/007; G21F9/04; G21F9/06; G21F9/10
Claims Analysis
Total Claims: 0
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US3112275A
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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) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |