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US2686202A
Expired / Lapsed
US
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Production of aromatic sulfonyl fluorides
Assignee: Pennsylvania Salt Manufacturing Co
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Filing: 1951-03-19
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Granted: 1954-08-10
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Expires: 1971-03-19
Abstract
No abstract record available.
Inventors
- 👤 Mccoy George
- 👤 Charles E Inman
- 👤 Paul G Haines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:23
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/02; C07C303/04; C07C303/08; C07C303/42; C07C303/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
THE METHOD OF SEPARATING AN AROMATIC SULFONYL FLUORIDE FROM A MIXTURE THAT CONTAINS THIS MATERIAL AND FLUOSULFONIC ACID, COMPRISING SUBJECTING THE MIXTURE TO EXTRACTION WITH A SOLVENT SELECTED FROM THE GROUP CONSISTING OF SATURATED ALIPHATIC HYDROCARBONS, HALOHYDROCARBONS AND MIXTURES THEREOF BOILING WITHIN THE RANGE OF 30 TO 200* C. AND WHICH IS IMMISCIBLE WITH FLUOSULFONIC ACID, AND SEPARATING THE SOLVENT CONTAINING THE AROMATIC SULFONYL FLUORIDE FROM THE FLUOSULFONIC ACID.
Claim 2
Independent Claim
69 words
THE METHOD OF SEPARATING AN AROMATIC SULFONYL FLUORIDE FROM A MIXTURE THAT CONTAINS THIS MATERIAL AND FLUOSULFONIC ACID, COMPRISING SUBJECTING THE MIXTURE TO EXTRACTION WITH A SOLVENT SELECTED FROM THE GROUP CONSISTING OF SATURATED ALIPHATIC HYDROCARBONS, HALOHYDROCARBONS AND MIXTURES THEREOF BOILING WITHIN THE RANGE OF 30 TO 200* C. AND WHICH IS IMMISCIBLE WITH FLUOSULFONIC ACID, AND SEPARATING THE SOLVENT CONTAINING THE AROMATIC SULFONYL FLUORIDE FROM THE FLUOSULFONIC ACID.
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) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |