US2664385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extraction of sulfur compounds with thiolsulfonic esters
Assignee: Standard Oil Co
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Filing: 1951-08-30
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Granted: 1953-12-29
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Expires: 1971-08-30
Abstract
No abstract record available.
Inventors
- 👤 William F Wolff
- 👤 Carl E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:34
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/06; C10G21/12; C10G21/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS FOR THE EXTRACTION OF AN ORGANIC SULFUR COMPOUND FROM A MIXTURE THEREOF WITH HYDROCARBONS, WHICH PROCESS COMPRISES CONTACTING SAID MIXTURE WITH AN ESTER OF A THIOLSULFONIC ACID CONTAINING 2 TO 20 CARBON ATOMS PER MOLECULE AND SEPARATING A RAFFINATE PHASE FROM AN EXTRACT PHASE COMPRISING SAID ESTER AND SAID ORGANIC SULFUR COMPOUND.
Claim 2
Dependent Claim
54 words
A PROCESS FOR THE EXTRACTION OF AN ORGANIC SULFUR COMPOUND FROM A MIXTURE THEREOF WITH HYDROCARBONS, WHICH PROCESS COMPRISES CONTACTING SAID MIXTURE WITH AN ESTER OF A THIOLSULFONIC ACID CONTAINING 2 TO 20 CARBON ATOMS PER MOLECULE AND SEPARATING A RAFFINATE PHASE FROM AN EXTRACT PHASE COMPRISING SAID ESTER AND SAID ORGANIC SULFUR COMPOUND.
References Cited (Backward Citations)
FR830532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |