US3423313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High solid content slurry separating method
Assignee: American Minechem Corp
•
Filing: 1967-02-15
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Granted: 1969-01-21
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Expires: 1987-02-15
Abstract
No abstract record available.
Inventors
- 👤 Leonard Messer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:58
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; B; B01; B01D; B01D21/00; B01D21/0012; B01D21/01; B01D21/26; B01D21/267; B01D21/30; B01D21/34; B01D2221/00; B01D2221/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2603354A
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US2834720A
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US2862880A
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US3094485A
Cited
US3138550A
Cited
DE1141601B
Cited
GB981963A
Cited
US3241676A
Cited
US3342731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |