US2608522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of highquality heating oils
Assignee: Standard Oil Development Co
•
Filing: 1949-05-05
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Granted: 1952-08-26
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Expires: 1969-05-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward J Niehaus
- 👤 Jr Hugh F Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:54
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
PROCESS FOR THE PREPARATION OF AN IMPROVED HEATING OIL WHICH COMPRISES CONTACTING A VIRGIN PETROLEUM OIL BOILING IN THE HEATING OIL BOILING RANGE IN AN INITIAL STAGE WITH A RELATIVELY WEAK SODIUM HYDROXIDE SOLUTION HAVING A GRAVITY IN THE RANGE FROM ABOUT 3* TO 7* BE., WITHDRAWING THE OIL AND MIXING THE SAME WITH OXYGEN AND A RELATIVELY STRONG SODIUM HYDROXIDE SOLUTION HAVING A GRAVITY IN THE RANGE FROM ABOUT 50* TO
Claim 2
Dependent Claim
72 words
PROCESS FOR THE PREPARATION OF AN IMPROVED HEATING OIL WHICH COMPRISES CONTACTING A VIRGIN PETROLEUM OIL BOILING IN THE HEATING OIL BOILING RANGE IN AN INITIAL STAGE WITH A RELATIVELY WEAK SODIUM HYDROXIDE SOLUTION HAVING A GRAVITY IN THE RANGE FROM ABOUT 3* TO 7* BE., WITHDRAWING THE OIL AND MIXING THE SAME WITH OXYGEN AND A RELATIVELY STRONG SODIUM HYDROXIDE SOLUTION HAVING A GRAVITY IN THE RANGE FROM ABOUT 50* TO
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) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |