US3438745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of flocculant introduction to centrifuging in potash ore treatments
Assignee: POTASH Co OF AMERICA Inc 1120 BOSTON POST ROAD DARIEN CONNECTICUT 06820 A CORP OF CANADIAN FEDERAL
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Filing: 1965-08-17
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Granted: 1969-04-15
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Expires: 1985-08-17
Abstract
No abstract record available.
Inventors
- 👤 Randal E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:24
CPC Classifications
C; C01; C01D; C01D3/00; C01D3/04; C01D3/08; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3095282A
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US3008655A
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US3145163A
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US3137650A
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US3308946A
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US3215509A
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US3282418A
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US3262878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |