Patent US2628972A successfully refreshed from Google Patents.
US2628972A
Expired / Lapsed
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1,1-difluoroethylfluosulfonates and process for preparing them
Assignee: Honeywell International Inc
•
Filing: 1949-08-03
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Granted: 1953-02-17
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Expires: 1969-08-03
Abstract
No abstract record available.
Inventors
- 👤 Calfee John Douglas
- 👤 Patrick A Florio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:31
CPC Classifications
C; C07; C07C; C07C305/00; C07C305/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
12 words
AS NEW COMPOSITIONS OF MATTER THE 1.1DIFLUOROETHYLFLUOSULFONATES HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
12 words
AS NEW COMPOSITIONS OF MATTER THE 1.1DIFLUOROETHYLFLUOSULFONATES HAVING THE FOLLOWING GENERAL FORMULA:
Claim 3
Dependent Claim
13 words
IN A PROCESS FOR THE PREPARATION OF NEW 1,1DIFLUOROETHYLFLUOSULFONATES HAVING THE GENERAL FORMULA:
Claim 4
Dependent Claim
13 words
IN A PROCESS FOR THE PREPARATION OF NEW 1,1DIFLUOROETHYLFLUOSULFONATES HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
US2061618A
Cited
US1448276A
Cited
FR804545A
Cited
GB458179A
Cited
US2403207A
Cited
US2482755A
Cited
US2450863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |