Patent US3253703A successfully refreshed from Google Patents.
Patent US3083220A successfully refreshed from Google Patents.
US3083220A
Expired / Lapsed
US
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Process for the preparation of fluosulfonates
Assignee: EIDP Inc
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Filing: 1958-07-03
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Granted: 1963-03-26
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Expires: 1978-07-03
Abstract
No abstract record available.
Inventors
- 👤 Edens William Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:14
CPC Classifications
C; C07; C07C; C07C305/00; C07C305/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR THE PREPARATION OF SUBSTANTIALLY FLUORINATED ALKYL FLUOSULFONATES WHICH COMPRISES REACTING AN ACID SELECTED FROM THE CLASS CONSISTING OF SULFURIC ACID AND FLUOSULFONIC ACID AT A TEMPERATURE OF 100 TO 400*C., WHEN THE ACID IS FLUOSULFONIC ACID AND 200*C. TO 400*C. WHEN THE ACID IS SULFURIC ACID, WITH A SUBSTANTIALLY FLUORINATED OLEFIN HAVING THE FORMULA
Claim 2
Dependent Claim
57 words
A PROCESS FOR THE PREPARATION OF SUBSTANTIALLY FLUORINATED ALKYL FLUOSULFONATES WHICH COMPRISES REACTING AN ACID SELECTED FROM THE CLASS CONSISTING OF SULFURIC ACID AND FLUOSULFONIC ACID AT A TEMPERATURE OF 100 TO 400*C., WHEN THE ACID IS FLUOSULFONIC ACID AND 200*C. TO 400*C. WHEN THE ACID IS SULFURIC ACID, WITH A SUBSTANTIALLY FLUORINATED OLEFIN HAVING THE FORMULA
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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |