Patent US3438890A successfully refreshed from Google Patents.
US3438890A
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Method and apparatus for separating solids-liquids mixtures
Assignee: FMC Corp
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Filing: 1965-09-10
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Granted: 1969-04-15
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Expires: 1985-09-10
Abstract
No abstract record available.
Inventors
- 👤 James B Neighbor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:50
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1236; C02F3/1242; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/233; B01F23/2331; B01F23/23311; B01F33/00; B01F33/50; B01F33/503; C02F1/00; C02F1/38; C02F1/385; B01F23/23314; B01F27/00; B01F27/05; B01F27/11; B01F27/111; B01F27/117; B01F27/19; B01F27/192; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2425932A
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US1336722A
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US1360708A
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US2254127A
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US2628021A
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US2685369A
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FR1275728A
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US2967618A
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US3226317A
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 |