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Patent US2959624A successfully refreshed from Google Patents.
US2959624A
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Process for preparing 1, 1, 1-trifluoro-2-chloro-2-bromethane from 1, 1, 2-trifluoro-1-bromo-2-chlorethane
Assignee: Hoechst AG
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Filing: 1958-07-15
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Granted: 1960-11-08
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Expires: 1978-07-15
Abstract
No abstract record available.
Inventors
- 👤 Scherer Otto
- 👤 Kuhn Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:50
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/35; C07C17/358
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
PROCESS FOR PREPARING 1,1,1-TRIFLUORO-2-CHLORO-2-BROMOETHANE WHICH COMPRISES HEATING 1,1,2 - TRIFLUORO - 1 BROMO-2-CHLOROETHANE WITH 0.1 TO 25 MOL PERCENT OF ANHYDROUS ALUMINUM CHLORIDE TO THE BOILING TEMPERATURE OF THE STARTING MATERIAL.
Claim 2
Dependent Claim
31 words
PROCESS FOR PREPARING 1,1,1-TRIFLUORO-2-CHLORO-2-BROMOETHANE WHICH COMPRISES HEATING 1,1,2 - TRIFLUORO - 1 BROMO-2-CHLOROETHANE WITH 0.1 TO 25 MOL PERCENT OF ANHYDROUS ALUMINUM CHLORIDE TO THE BOILING TEMPERATURE OF THE STARTING MATERIAL.
References Cited (Backward Citations)
US2598411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |