US3411876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of hydrargillite
Assignee: Produits Chimiques Pechiney Saint Gobain
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Filing: 1964-05-25
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Granted: 1968-11-19
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Expires: 1984-05-25
Abstract
No abstract record available.
Inventors
- 👤 Michel Max
- 👤 Papee Denis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:59
CPC Classifications
B; B82; B82Y; B82Y30/00; B01; B01J; B01J20/00; B01J20/02; B01J20/06; B01J20/08; C; C01; C01F; C01F7/00; C01F7/02; C01F7/46; C04; C04B; C04B35/00; C04B35/01; C04B35/10; C01P; C01P2002/00; C01P2002/60; C01P2004/00; C01P2004/60; C01P2004/64; C01P2006/00; C01P2006/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |