US3170954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfluoroisopropylsulfur(iv) fluorides
Assignee: EIDP Inc
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Filing: 1961-06-16
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Granted: 1965-02-23
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Expires: 1981-06-16
Abstract
No abstract record available.
Inventors
- 👤 Richard M Rosenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:27
CPC Classifications
C; C07; C07C; C07C381/00; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/16; C08G65/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
79 words
A PROCESS OF PREPARING PERFLUOROISOPROPYLSULFUR(IV) FLUORIDES WHICH COMPRISES CONTACTING PERFLUOROPROPYLENE WITH A SULFUR(IV) FLUORIDE OF THE FORMULA ASF3, WHEREIN A IS OF THE GROUP CONSISTING OF FLUORINE, A-FLUOROHALOALKYL OF UP TO 18 CARBONS IN WHICH ALL HALOGENS ARE OF ATOMIC NUMBER 9-17, B-ALKOXYPERFLUOROETHYL OF UP TO 18 CARBONS AND ALIPHATICALLY SATURATED AROMATIC HYDROCARBYL OF 6 TO 18 CARBONS AND UP TO 2 AROMATIC RINGS, IN THE PRESENCE OF CESIUM FLUORIDE, UNDER ANHYDROUS CONDITIONS AND AT A TEMPERATURE OF 0-200*C.
Claim 4
Dependent Claim
79 words
A PROCESS OF PREPARING PERFLUOROISOPROPYLSULFUR(IV) FLUORIDES WHICH COMPRISES CONTACTING PERFLUOROPROPYLENE WITH A SULFUR(IV) FLUORIDE OF THE FORMULA ASF3, WHEREIN A IS OF THE GROUP CONSISTING OF FLUORINE, A-FLUOROHALOALKYL OF UP TO 18 CARBONS IN WHICH ALL HALOGENS ARE OF ATOMIC NUMBER 9-17, B-ALKOXYPERFLUOROETHYL OF UP TO 18 CARBONS AND ALIPHATICALLY SATURATED AROMATIC HYDROCARBYL OF 6 TO 18 CARBONS AND UP TO 2 AROMATIC RINGS, IN THE PRESENCE OF CESIUM FLUORIDE, UNDER ANHYDROUS CONDITIONS AND AT A TEMPERATURE OF 0-200*C.
References Cited (Backward Citations)
US2928870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |