US2947787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of dialkyl sulfoxides
Assignee: ConocoPhillips Co
•
Filing: 1959-08-20
•
Granted: 1960-08-02
•
Expires: 1979-08-20
Abstract
No abstract record available.
Inventors
- 👤 Pat W K Flanagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:40
CPC Classifications
C; C07; C07C; C07C317/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
METHOD OF PREPARING A DIALKYL SULFOXIDE WHICH COMPRISES DISSOLVING AN ALKYLALUMINUM COMPOUND IN AN INERT ORGANIC SOLVENT MAINTAINING THE RESULT SOLUTION AT A TEMPERATURE VARYING FROM -25 TO 100* C. UNDER AN ATMOSPHERE OF AN INERT GAS, ADDING TO SAID SOLUTION THIONYL CHLORIDE DISSOLVED IN AN INERT ORGANIC SOLVENT, HEATING THE RESULTING MIXTURE TO A TEMPERATURE VARYING FROM 0 TO 100*C., COOLING SAID MIXTURE AND THEN RECOVERING THE DIALKYL SULFOXIDE.
Claim 2
Dependent Claim
70 words
METHOD OF PREPARING A DIALKYL SULFOXIDE WHICH COMPRISES DISSOLVING AN ALKYLALUMINUM COMPOUND IN AN INERT ORGANIC SOLVENT MAINTAINING THE RESULT SOLUTION AT A TEMPERATURE VARYING FROM -25 TO 100* C. UNDER AN ATMOSPHERE OF AN INERT GAS, ADDING TO SAID SOLUTION THIONYL CHLORIDE DISSOLVED IN AN INERT ORGANIC SOLVENT, HEATING THE RESULTING MIXTURE TO A TEMPERATURE VARYING FROM 0 TO 100*C., COOLING SAID MIXTURE AND THEN RECOVERING THE DIALKYL SULFOXIDE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |