US2789696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating hydrocarbon oils
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1952-12-30
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Granted: 1957-04-23
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Expires: 1972-12-30
Abstract
No abstract record available.
Inventors
- 👤 Charles E Jahnig
- 👤 Arnold F Kaulakis
- 👤 Raymond W Winkler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:10
CPC Classifications
C; C10; C10G; C10G31/00; C10G31/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR TREATING HYDROCARBON OIL CONTAINING IMPURITIES WHICH COMPRISES INTRODUCING A HYDROCARBON OIL AT ELEVATED TEMPERATURE AND UNDER SUPERATMOSPHERIC PRESSURE ABOVE AND BELOW STATIONARY HORIZONTAL BEDS OF INERT FINELY DIVIDED SOLID FILTERING MATERIAL ARRANGED IN VERTICALLY SPACED PARALLEL RELATION IN A CONTACTING ZONE, SO THAT THE OIL PASSES UP THROUGH THE BOTTOM PORTION OF EACH BED AND DOWN THROUGH THE TOP PORTIONS OF EACH BED, WITHDRAWING FILTERED OIL FROM THE INTERIOR PORTION OF EACH
Claim 2
Dependent Claim
75 words
A PROCESS FOR TREATING HYDROCARBON OIL CONTAINING IMPURITIES WHICH COMPRISES INTRODUCING A HYDROCARBON OIL AT ELEVATED TEMPERATURE AND UNDER SUPERATMOSPHERIC PRESSURE ABOVE AND BELOW STATIONARY HORIZONTAL BEDS OF INERT FINELY DIVIDED SOLID FILTERING MATERIAL ARRANGED IN VERTICALLY SPACED PARALLEL RELATION IN A CONTACTING ZONE, SO THAT THE OIL PASSES UP THROUGH THE BOTTOM PORTION OF EACH BED AND DOWN THROUGH THE TOP PORTIONS OF EACH BED, WITHDRAWING FILTERED OIL FROM THE INTERIOR PORTION OF EACH
References Cited (Backward Citations)
US1017867A
Cited
US1015326A
Cited
US2171377A
Cited
GB464661A
Cited
US2154434A
Cited
US2571380A
Cited
US2572433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |