US3480388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of hydrargillite crystals
Assignee: Produits Chimiques Pechiney Saint Gobain
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Filing: 1966-05-16
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Granted: 1969-11-25
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Expires: 1986-05-16
Abstract
No abstract record available.
Inventors
- 👤 Max Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:58
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; C01F7/04; C01F7/14; C01F7/144; C01P; C01P2002/00; C01P2002/60; C01P2006/00; C01P2006/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB663459A
Cited
US2656250A
Cited
US2881051A
Cited
FR1371808A
Cited
US3411877A
Cited
US3411876A
Cited
US3380933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |