US2758720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of emulsions by filtration
Assignee: Shell Development Co
•
Filing: 1953-06-29
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Granted: 1956-08-14
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Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 Willem Johannes Dominicu Dijck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:29
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/06; B; B01; B01D; B01D17/00; B01D17/08; B01D17/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
APPARATUS FOR SEPARATING EMULSIONS INTO THEIR CONSTITUENT LIQUIDS BY FILTRATION COMPRISING: A SERIES OF INCLINED FILTERS DISPOSED FOR THE FLOW OF SAID EMULSION IN CONTACT SUCCESSIVELY WITH SAID FILTERS, ALTERNATE FILTERS BEING PREFERENTIALLY WETTED BY ONE OF SAID CONSTITUENTS OF THE EMULSION IN THE PRESENCE OF THE OTHER CONSTITUENT AND THE INTERVENING FILTERS BEING PREFERENTIALLY WETTED BY SAID OTHER CONSTITUENT IN THE PRESENCE OF SAID ONE CONSTITUENT; MEANS FOR FEEDING SAID EMULSION TO THE FIRST FILTER OF SAID SERIES; CHANNEL MEANS FOR LEADING THE ENTIRE FILTRATION RESIDUE
Claim 2
Dependent Claim
87 words
APPARATUS FOR SEPARATING EMULSIONS INTO THEIR CONSTITUENT LIQUIDS BY FILTRATION COMPRISING: A SERIES OF INCLINED FILTERS DISPOSED FOR THE FLOW OF SAID EMULSION IN CONTACT SUCCESSIVELY WITH SAID FILTERS, ALTERNATE FILTERS BEING PREFERENTIALLY WETTED BY ONE OF SAID CONSTITUENTS OF THE EMULSION IN THE PRESENCE OF THE OTHER CONSTITUENT AND THE INTERVENING FILTERS BEING PREFERENTIALLY WETTED BY SAID OTHER CONSTITUENT IN THE PRESENCE OF SAID ONE CONSTITUENT; MEANS FOR FEEDING SAID EMULSION TO THE FIRST FILTER OF SAID SERIES; CHANNEL MEANS FOR LEADING THE ENTIRE FILTRATION RESIDUE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |