US2825678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of hydrocarbon oils
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1951-09-25
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Granted: 1958-03-04
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Expires: 1971-09-25
Abstract
No abstract record available.
Inventors
- 👤 Charles E Jahnig
- 👤 Arnold F Kaulakis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:16
CPC Classifications
C; C10; C10G; C10G31/00; C10G31/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
THE PROCESS OF CATALYTICALLY CRACKING A PETROLEUM HYDROCARBON OIL OF THE GAS OIL BOILING RANGE, SAID OIL ORIGINALLY CONTAINING WATER-INSOLUBLE AND OIL-INSOLUBLE IRON-CONTAINING CONTAMINANTS, WHICH CONSISTS ESSENTIALLY OF INTIMATELY MIXING SAID OIL WITH ABOUT 5 TO ABOUT 10 PERCENT OF ITS VOLUME OF WATER, THEREBY FORMING A MIXTURE OF FREE OIL AND WATER-IN-OIL EMULSION, SUBJECTING SAID MIXTURE OF GRAVITY SETTLING FOR A PERIOD OF FROM ABOUT 5 TO 100 HOURS WHEREBY THERE ARE FORMED A MINOR LAYER OF UNBROKEN EMULSION AND A MAJOR LAYER OF FREE OIL, SAID FREE OIL BEING SUBSTANTIALLY FREE OF SAID CONTAMINANTS, AND SAID EMULSION CONTAINING ABOUT 2 TO 10 VOLUME PERCENT OF SAID OIL AND SUBSTANTIALLY ALL OF SASID CONTAMINANTS, SEPARATING SAID UNBROKEN EMULSION LAYER AS A WHOLE FROM SAID FREE OIL LAYER AND SUBJECTING SAID FREE OIL TO CATALYTIC CRACKING.
Claim 2
Dependent Claim
136 words
THE PROCESS OF CATALYTICALLY CRACKING A PETROLEUM HYDROCARBON OIL OF THE GAS OIL BOILING RANGE, SAID OIL ORIGINALLY CONTAINING WATER-INSOLUBLE AND OIL-INSOLUBLE IRON-CONTAINING CONTAMINANTS, WHICH CONSISTS ESSENTIALLY OF INTIMATELY MIXING SAID OIL WITH ABOUT 5 TO ABOUT 10 PERCENT OF ITS VOLUME OF WATER, THEREBY FORMING A MIXTURE OF FREE OIL AND WATER-IN-OIL EMULSION, SUBJECTING SAID MIXTURE OF GRAVITY SETTLING FOR A PERIOD OF FROM ABOUT 5 TO 100 HOURS WHEREBY THERE ARE FORMED A MINOR LAYER OF UNBROKEN EMULSION AND A MAJOR LAYER OF FREE OIL, SAID FREE OIL BEING SUBSTANTIALLY FREE OF SAID CONTAMINANTS, AND SAID EMULSION CONTAINING ABOUT 2 TO 10 VOLUME PERCENT OF SAID OIL AND SUBSTANTIALLY ALL OF SASID CONTAMINANTS, SEPARATING SAID UNBROKEN EMULSION LAYER AS A WHOLE FROM SAID FREE OIL LAYER AND SUBJECTING SAID FREE OIL TO CATALYTIC CRACKING.
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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) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |