Patent US2404234A successfully refreshed from Google Patents.
US2864873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of 1, 1, 2-trifluoro-2-chloroethylene
Assignee: Honeywell International Inc
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Filing: 1954-03-16
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Granted: 1958-12-16
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Expires: 1974-03-16
Abstract
No abstract record available.
Inventors
- 👤 Charles B Miller
- 👤 Lee B Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:41
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
IN A PROCESS FOR PREPARING 1.2,2-TRIFLUOR/-2-CHLOROETHYLENE, THE STEP WHICH COMPRISES REACTING A MIXTURE OF HYDROGEN AND 1.1,2-TRIFLUORO-1,2,2-TRICHLOROTHENE IN THE VAPOR PHSE AT TEMPERATURES BETWEEN ABOUT 325*C. AND ABOUT 425*C. IN THE PRESENCE OF A CATALYST COMPRISING COOPER METAL AND AN OXIDE CHROMIUM.
Claim 2
Dependent Claim
42 words
IN A PROCESS FOR PREPARING 1.2,2-TRIFLUOR/-2-CHLOROETHYLENE, THE STEP WHICH COMPRISES REACTING A MIXTURE OF HYDROGEN AND 1.1,2-TRIFLUORO-1,2,2-TRICHLOROTHENE IN THE VAPOR PHSE AT TEMPERATURES BETWEEN ABOUT 325*C. AND ABOUT 425*C. IN THE PRESENCE OF A CATALYST COMPRISING COOPER METAL AND AN OXIDE CHROMIUM.
References Cited (Backward Citations)
GB619394A
Cited
US2504919A
Cited
US2615925A
Cited
US2704775A
Cited
US2697124A
Cited
US2685606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |