US2708182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of oil-soluble organic sulfonates
Assignee: Shell Development Co
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Filing: 1952-04-21
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Granted: 1955-05-10
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Expires: 1972-04-21
Abstract
No abstract record available.
Inventors
- 👤 Edward J Jahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:33
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/20; C10M159/24; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/14; C10N2010/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN A PROCESS FOR THE CONVERSION OF A MINERAL OIL SOLUTION OF SODIUM PETROLEUM SULFONATES TO A MINERAL OIL SOLUTION OF THE CORRESPONDING CALCIUM PETROLEUM SULFONATES WHEREIN SAID MINERAL OIL SOLUTION OF SODIUM PETROLEUM SULFONATES IS REACTED WITH CALCIUM CHLORIDE AND CALCIUM HYDROXIDE AT A TEMPERATURE OF ABOUT 180* F. TO ABOUT 200* F., IN THE PRESENCE OF ABOUT 80% BY WEIGHT, OF WATER BASED ON THE SODIUM PETROLEUM SULFONATES, THE IMPROVEMENT COMPRISING EFFECTING SAID CONVERSION IN THE PRESENCE OF ABOUT 10%, BY WEIGHT BASED ON THE SODIUM PETROLEUM SULFONATES, OF A PARTIALLY WATERSOLUBLE POLYOXETHYLENE DERIVATIVE OF SORBITAN TRIOLEATE.
Claim 2
Dependent Claim
99 words
IN A PROCESS FOR THE CONVERSION OF A MINERAL OIL SOLUTION OF SODIUM PETROLEUM SULFONATES TO A MINERAL OIL SOLUTION OF THE CORRESPONDING CALCIUM PETROLEUM SULFONATES WHEREIN SAID MINERAL OIL SOLUTION OF SODIUM PETROLEUM SULFONATES IS REACTED WITH CALCIUM CHLORIDE AND CALCIUM HYDROXIDE AT A TEMPERATURE OF ABOUT 180* F. TO ABOUT 200* F., IN THE PRESENCE OF ABOUT 80% BY WEIGHT, OF WATER BASED ON THE SODIUM PETROLEUM SULFONATES, THE IMPROVEMENT COMPRISING EFFECTING SAID CONVERSION IN THE PRESENCE OF ABOUT 10%, BY WEIGHT BASED ON THE SODIUM PETROLEUM SULFONATES, OF A PARTIALLY WATERSOLUBLE POLYOXETHYLENE DERIVATIVE OF SORBITAN TRIOLEATE.
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) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |