US2744855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurization process using alkali followed by extraction with liquid sulfur dioxide and a promoter
Assignee: Standard Oil Co
•
Filing: 1953-07-09
•
Granted: 1956-05-08
•
Expires: 1973-07-09
Abstract
No abstract record available.
Inventors
- 👤 Robert C Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:36
CPC Classifications
C; C10; C10G; C10G19/00; C10G19/02; C10G19/06; C10G21/00; C10G21/06; C10G21/08; C10G21/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS FOR REFINING A MERCAPTAN-CONTAINING HYDROCARBON OIL, WHICH PROCESS COMPRISES (1) TREATING SAID OIL TO SUBSTANTIALLY ELIMINATE THE MERCAPTANS THEREFROM, (2) CONTACTING SAID SUBSTANTIALLY MERCAPTAN-FREE OIL WITH AN AGENT CONSISTING ESSENTIALLY OF LIQUID SO2 AND A PROMOTOR, WHEREIN THE LIQUID SO2 IS PRESENT IN AN AMOUNT AT LEAST SUFFICIENT TO FORM AN EXTRACT PHASE AND THE PROMOTOR IS SELECTED FROM THE CLASS OF FRIEDEL-CRAFTS METAL HALIDES CONSISTING OF ALCL3, FECL3, TICL4, BF3, HGCL2, BCL3 AND ZNCL2 AT A TEMPERATURE BELOW ABOUT
Claim 2
Dependent Claim
82 words
A PROCESS FOR REFINING A MERCAPTAN-CONTAINING HYDROCARBON OIL, WHICH PROCESS COMPRISES (1) TREATING SAID OIL TO SUBSTANTIALLY ELIMINATE THE MERCAPTANS THEREFROM, (2) CONTACTING SAID SUBSTANTIALLY MERCAPTAN-FREE OIL WITH AN AGENT CONSISTING ESSENTIALLY OF LIQUID SO2 AND A PROMOTOR, WHEREIN THE LIQUID SO2 IS PRESENT IN AN AMOUNT AT LEAST SUFFICIENT TO FORM AN EXTRACT PHASE AND THE PROMOTOR IS SELECTED FROM THE CLASS OF FRIEDEL-CRAFTS METAL HALIDES CONSISTING OF ALCL3, FECL3, TICL4, BF3, HGCL2, BCL3 AND ZNCL2 AT A TEMPERATURE BELOW ABOUT
References Cited (Backward Citations)
US1941251A
Cited
US2534025A
Cited
US2451025A
Cited
US2560330A
Cited
US2626893A
Cited
US2646390A
Cited
US2671046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |