US2934497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the removal of porphyrin metallic contaminants using ozone
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-12-02
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Granted: 1960-04-26
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Expires: 1977-12-02
Abstract
No abstract record available.
Inventors
- 👤 Bieber Herman
- 👤 Harry M Hartzband
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:51
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04; C10G27/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A PROCESS FOR THE REMOVAL OF INNATE METALLIC PORPHYRIN CONTAMINANTS FROM A PETROLEUM FRACTION BOILING IN EXCESS OF ABOUT 950*F. WHICH COMPRISES DISSOLVING SAID FRACTION IN A SOLVENT TO FORM A SINGLE LIQUID PHASE, CONTACTING SAID LIQUID PHASE WITH FROM ABOUT 0.1 TO ABOUT 1.5 WT. PERCENT OF OZONE, BASED UPON THE WEIGHT OF SAID FRACTION, SEPARATING SAID FRACTION AND SAID SOLVENT, AND THEREAFTER WATER-WASHING SAID FRACTION AND RECOVERING AN OIL SUBSTANTIALLY REDUCED IN METALLIC CONTAMINANTS CONTENT.
Claim 2
Dependent Claim
77 words
A PROCESS FOR THE REMOVAL OF INNATE METALLIC PORPHYRIN CONTAMINANTS FROM A PETROLEUM FRACTION BOILING IN EXCESS OF ABOUT 950*F. WHICH COMPRISES DISSOLVING SAID FRACTION IN A SOLVENT TO FORM A SINGLE LIQUID PHASE, CONTACTING SAID LIQUID PHASE WITH FROM ABOUT 0.1 TO ABOUT 1.5 WT. PERCENT OF OZONE, BASED UPON THE WEIGHT OF SAID FRACTION, SEPARATING SAID FRACTION AND SAID SOLVENT, AND THEREAFTER WATER-WASHING SAID FRACTION AND RECOVERING AN OIL SUBSTANTIALLY REDUCED IN METALLIC CONTAMINANTS CONTENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |