US2881206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing stable high detergency barium sulfonates
Assignee: Sinclair Refining Co
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Filing: 1957-04-08
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Granted: 1959-04-07
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Expires: 1977-04-08
Abstract
No abstract record available.
Inventors
- 👤 Kjonaas Manley
- 👤 Lee V Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:32
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
IN A METHOD OF PREPARING PETROLEUM SULFONATES WHEREIN AN OIL-SOLUBLE BASIC BARIUMSULFONATE IS CARBONATED WITH CARBON DIOXIDE AND THEREAFTER NEUTRALIZED WITH A BARIUM NEUTRALIZING AGENT, THE IMPROVEMENT WHICH COMPRISES THE SUCCESSIVE STEPS OF RECARBONATING THE CARBONATED-NEUTRALIZED BASIC BARIUM SULFONATE WITH CARBON DIOXIDE GAS AND RENEUTRALIZING SAID RECARBONATE SULFONATE WITH A BARIUM NEUTRALIZING AGENT.
Claim 2
Dependent Claim
53 words
IN A METHOD OF PREPARING PETROLEUM SULFONATES WHEREIN AN OIL-SOLUBLE BASIC BARIUMSULFONATE IS CARBONATED WITH CARBON DIOXIDE AND THEREAFTER NEUTRALIZED WITH A BARIUM NEUTRALIZING AGENT, THE IMPROVEMENT WHICH COMPRISES THE SUCCESSIVE STEPS OF RECARBONATING THE CARBONATED-NEUTRALIZED BASIC BARIUM SULFONATE WITH CARBON DIOXIDE GAS AND RENEUTRALIZING SAID RECARBONATE SULFONATE WITH A BARIUM NEUTRALIZING AGENT.
References Cited (Backward Citations)
US2501732A
Cited
US2695910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |