Patent US3466142A successfully refreshed from Google Patents.
US3466142A
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US
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Method of preparing spherical alumina hydrate from seeded aluminate liquor
Assignee: Alcan Research and Development Ltd
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Filing: 1967-04-11
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Granted: 1969-09-09
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Expires: 1987-04-11
Abstract
No abstract record available.
Inventors
- 👤 John Arthur Hambly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:18
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; C01F7/04; C01F7/14; C01F7/144; C01F7/148; C01P; C01P2004/00; C01P2004/01; C01P2004/03; C01P2004/51; C01P2004/60; C01P2004/61
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2352867A
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US2584286A
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US3177151A
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US3231520A
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US3353910A
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US3304154A
Cited
US3264069A
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US3377134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-08 | 1973-03-10 | 1973-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-08 | 1977-03-10 | 1977-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-08 | 1981-03-10 | 1981-09-09 | $7700.00 | Window Closed / Lapsed |