US2641570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweetening petroleum oils
Assignee: Standard Oil Development Co
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Filing: 1950-03-04
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Granted: 1953-06-09
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Expires: 1970-03-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold A Ricards
- 👤 Byron M Vanderbilt
- 👤 Arundale Erving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:22
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
PROCESS FOR SWEETENING A VIRGIN PETROLEUM NAPHTHA WHICH COMPRISES CONTACTING THE NAPHTHA WITH AN OXYGEN-CONTAINING GAS IN THE PRESENCE OF A SODIUM HYDROXIDE HAVING A CONCENTRATION BETWEEN 0.5 AND 10% BY WEIGHT AND CONTAINING ABOUT 0.05 AND 1% OF ALKALI METAL ROSINATE AND 0.05 AND 0.5% OF PETROLEUM PHENOLS, MECHANICALLY AGITATING THE MIXTURE TO FORM AN EMULSION AND THEN COOLING THE EMULSION ABOUT 10-50* C. WHEREUPON THE EMULSION SEPARATES INTO AN OIL AND AN AQUEOUS PHASE.
Claim 2
Dependent Claim
76 words
PROCESS FOR SWEETENING A VIRGIN PETROLEUM NAPHTHA WHICH COMPRISES CONTACTING THE NAPHTHA WITH AN OXYGEN-CONTAINING GAS IN THE PRESENCE OF A SODIUM HYDROXIDE HAVING A CONCENTRATION BETWEEN 0.5 AND 10% BY WEIGHT AND CONTAINING ABOUT 0.05 AND 1% OF ALKALI METAL ROSINATE AND 0.05 AND 0.5% OF PETROLEUM PHENOLS, MECHANICALLY AGITATING THE MIXTURE TO FORM AN EMULSION AND THEN COOLING THE EMULSION ABOUT 10-50* C. WHEREUPON THE EMULSION SEPARATES INTO AN OIL AND AN AQUEOUS PHASE.
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) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |