Patent US3052691A successfully refreshed from Google Patents.
US3052691A
Expired / Lapsed
US
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Polyfluorinated heterocyclic sulfides
Assignee: EIDP Inc
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Filing: 1959-04-24
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Granted: 1962-09-04
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Expires: 1979-04-24
Abstract
No abstract record available.
Inventors
- 👤 Carl G Krespan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:31
CPC Classifications
C; C07; C07D; C07D495/00; C07D495/02; C07D495/04; A; A62; A62D; A62D1/00; A62D1/0028; C07D333/00; C07D333/02; C07D333/04; C07D333/06; C07D333/12; C07D339/00; C07D341/00; C08; C08K; C08K5/00; C08K5/36; C08K5/45; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
7 words
A TETRAKIS (POLYFLUOROALKYL) THIOPHENE HAVING THE FORMULA
Claim 2
Dependent Claim
7 words
A TETRAKIS (POLYFLUOROALKYL) THIOPHENE HAVING THE FORMULA
Claim 3
Dependent Claim
6 words
A BIS(POLYFLUOROALKYL) -1,2-DITHIETENE HAVING THE FORMULA
Claim 4
Dependent Claim
6 words
A BIS(POLYFLUOROALKYL) -1,2-DITHIETENE HAVING THE FORMULA
Claim 5
Dependent Claim
6 words
A 1,2,5,6-TETRATHIA-3,4,7,8-TETRAKIS (POLYFLUOROALKYL)CYCLOOCTA-3,7-DIENE HAVING THE FORMULA
Claim 6
Dependent Claim
6 words
A 1,2,5,6-TETRATHIA-3,4,7,8-TETRAKIS (POLYFLUOROALKYL)CYCLOOCTA-3,7-DIENE HAVING THE FORMULA
Claim 7
Dependent Claim
2 words
BIS(TRIFLUOROMETHYL) -1,2-DITHIETENE.
Claim 8
Dependent Claim
2 words
BIS(TRIFLUOROMETHYL) -1,2-DITHIETENE.
Claim 9
Dependent Claim
51 words
THE PROCESS WHICH COMPRISES HEATING, AT A TEMPERATURE OF ABOUT 150-475C., A MIXTURE OF SULFUR AND A COMPOUND OF THE FORMULA R-C=C-R WHERE EACH R IS SELECTED FROM THE GROUP CONSISTING OF PERFLUOROALKYL, W-HYDROPERFLUOROALKYL, AND W-CHLOROPERFLUOROALKYL OF 1-12 CARBON ATOMS, AND FORMING AS A RESULTING PRODUCT AN UNSATURATED, POLYFLUORINATED HETEROCYCLIC SULFIDE.
Claim 10
Dependent Claim
51 words
THE PROCESS WHICH COMPRISES HEATING, AT A TEMPERATURE OF ABOUT 150-475C., A MIXTURE OF SULFUR AND A COMPOUND OF THE FORMULA R-C=C-R WHERE EACH R IS SELECTED FROM THE GROUP CONSISTING OF PERFLUOROALKYL, W-HYDROPERFLUOROALKYL, AND W-CHLOROPERFLUOROALKYL OF 1-12 CARBON ATOMS, AND FORMING AS A RESULTING PRODUCT AN UNSATURATED, POLYFLUORINATED HETEROCYCLIC SULFIDE.
References Cited (Backward Citations)
US2613214A
Cited
US2625553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |