US2853431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweetening petroleum hydrocarbons with a nu, nu'-dialkyl-phenylene diamine and oxygen in the presence of refinery slop oil
Assignee: Sunoco Inc
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Filing: 1955-05-31
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Granted: 1958-09-23
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Expires: 1975-05-31
Abstract
No abstract record available.
Inventors
- 👤 Rolland G Bowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:56
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
PROCESS FOR SWEETENING SATURATED PETROLEUM HYDROCARBONS WHICH COMPRISES: CONTACTING SATURATED PETROLEUM HYDROCARBONS UNDER SWEETENING CONDITIONS WITH A SMALL AMOUNT OF AN N,N''-DIALKYL-P-PHENYLENE DIAMINE IN THE PRESENCE OF OXYGEN AND 0.1 TO 10 VOLUME PERCENT BASED ON SAID HYDROCARBONS OF CONSISTUENTS OF SLOP OIL RECOVERED FROM PETROLEUM REFINERY WASTE WATER STREAMS.
Claim 2
Dependent Claim
50 words
PROCESS FOR SWEETENING SATURATED PETROLEUM HYDROCARBONS WHICH COMPRISES: CONTACTING SATURATED PETROLEUM HYDROCARBONS UNDER SWEETENING CONDITIONS WITH A SMALL AMOUNT OF AN N,N''-DIALKYL-P-PHENYLENE DIAMINE IN THE PRESENCE OF OXYGEN AND 0.1 TO 10 VOLUME PERCENT BASED ON SAID HYDROCARBONS OF CONSISTUENTS OF SLOP OIL RECOVERED FROM PETROLEUM REFINERY WASTE WATER STREAMS.
References Cited (Backward Citations)
US2694034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |