US3081245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of tetrafluoroethylene
Assignee: EIDP Inc
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Filing: 1960-03-17
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Granted: 1963-03-12
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Expires: 1980-03-17
Abstract
No abstract record available.
Inventors
- 👤 Farlow Mark Wendell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:27
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/087; B01J19/088; C; C07; C07C; C07C17/00; C07C17/26; C07C17/263; C07C17/269
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS FOR THE PREPARATION OF TETRAFLUOROETHYLENE WHICH COMPRISES FEEDING A SATURATED PERFLUOROCARBON TO A CONTINUOUS ELECTRIC ARC, PASSING THE EMERGING GASEOUS PRODUCT THROUGH A CARBON BED AT A TEMPERATURE OF 2700* C. TO 2000* C., AND THEREAFTER QUENCHING THE RESULTING GASEOUS REACTION PRODUCT TO TEMPERATURE BELOW 500* C. IN LESS THAN ONE SECOND.
Claim 2
Dependent Claim
54 words
A PROCESS FOR THE PREPARATION OF TETRAFLUOROETHYLENE WHICH COMPRISES FEEDING A SATURATED PERFLUOROCARBON TO A CONTINUOUS ELECTRIC ARC, PASSING THE EMERGING GASEOUS PRODUCT THROUGH A CARBON BED AT A TEMPERATURE OF 2700* C. TO 2000* C., AND THEREAFTER QUENCHING THE RESULTING GASEOUS REACTION PRODUCT TO TEMPERATURE BELOW 500* C. IN LESS THAN ONE SECOND.
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |