Patent US3523889A successfully refreshed from Google Patents.
US3523889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for separating liquids from solids
Assignee: American Sugar Co
•
Filing: 1968-11-26
•
Granted: 1970-08-11
•
Expires: 1988-11-26
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Eis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:41
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5281; B; B01; B01D; B01D21/00; B01D21/0039; B01D21/0042; B01D21/01; B01D21/02; B01D21/04; B01D21/06; B01D21/24; B01D21/2405; B01D21/2427; B01D21/245; B01D21/30; B01D21/34; C02F1/02; B01D2221/00; B01D2221/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1195537A
Cited
US2245587A
Cited
US2365293A
Cited
US2380252A
Cited
US2411386A
Cited
GB805526A
Cited
GB925993A
Cited
US3353676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |