Patent US3268456A successfully refreshed from Google Patents.
US3268456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation process
Assignee: Shell USA Inc
•
Filing: 1963-04-12
•
Granted: 1966-08-23
•
Expires: 1983-04-12
Abstract
No abstract record available.
Inventors
- 👤 Loraine C Fruth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:21
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/04; B01D17/045; B01D17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS FOR COALESCING AND AGGLOMERATING A SUSPENSION OF WATER IN A LIQUID HYDROCARBON COMPRISING CONTACTING THE SUSPENSION, FOR A RESIDENCE TIME OF 0.1 SECOND UP TO ABOUT 60 SECONDS, WITH PARTICLES OF TWO FINELY DIVIDED SOLIDS, ONE COMPRISING IRON AND ONE CONPRISING CARBON, EACH OF SAID PARTICLES BEING FORMED BY IMPREGNATING ONE SOLID WITH THE OTHER SOLID, TO PRODUCE TWO SUBSTANTIALLY SEPARATE PHASES.
Claim 2
Dependent Claim
64 words
A PROCESS FOR COALESCING AND AGGLOMERATING A SUSPENSION OF WATER IN A LIQUID HYDROCARBON COMPRISING CONTACTING THE SUSPENSION, FOR A RESIDENCE TIME OF 0.1 SECOND UP TO ABOUT 60 SECONDS, WITH PARTICLES OF TWO FINELY DIVIDED SOLIDS, ONE COMPRISING IRON AND ONE CONPRISING CARBON, EACH OF SAID PARTICLES BEING FORMED BY IMPREGNATING ONE SOLID WITH THE OTHER SOLID, TO PRODUCE TWO SUBSTANTIALLY SEPARATE PHASES.
References Cited (Backward Citations)
US1569695A
Cited
US1887774A
Cited
US2036258A
Cited
US2232294A
Cited
US2305550A
Cited
US3016345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |