US2858341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Producing bis-(dichlormethyl) sulfone
Assignee: Monsanto Chemicals Ltd
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Filing: 1951-03-31
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Granted: 1958-10-28
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Expires: 1971-03-31
Abstract
No abstract record available.
Inventors
- 👤 Howard N Dole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:33
CPC Classifications
C; C07; C07C; C07C315/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS WHICH COMPRISES REACTING CHLORINE AND A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF THIOBIS ACETIC ACID AND WATER-SOLUBLE SALTS OF SAID ACID IN AN AQUEOUS SOLUTION UNDER ACIDIC CONDITIONS AT A TEMPERATURE RANGING FROM JUST ABOVE THE FREEZING POINT OF THE SOLUTION TO 25*C., SAID CHLORINE BEING SUPPLIED IN AN AMOUNT SUFFICIENT TO PROVIDE AT LEAST 6 MOLS OF CHLORINE FOR EACH MOL OF SAID SUBSTANCE, AND CONTINUING THE REACTION UNTIL BIS-(DICHLORMETHYL) SULFONE IS FORMED AND PRECIPITATES FROM SOLUTION.
Claim 2
Dependent Claim
81 words
A PROCESS WHICH COMPRISES REACTING CHLORINE AND A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF THIOBIS ACETIC ACID AND WATER-SOLUBLE SALTS OF SAID ACID IN AN AQUEOUS SOLUTION UNDER ACIDIC CONDITIONS AT A TEMPERATURE RANGING FROM JUST ABOVE THE FREEZING POINT OF THE SOLUTION TO 25*C., SAID CHLORINE BEING SUPPLIED IN AN AMOUNT SUFFICIENT TO PROVIDE AT LEAST 6 MOLS OF CHLORINE FOR EACH MOL OF SAID SUBSTANCE, AND CONTINUING THE REACTION UNTIL BIS-(DICHLORMETHYL) SULFONE IS FORMED AND PRECIPITATES FROM SOLUTION.
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) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |