Patent DE216276C successfully refreshed from Google Patents.
US2862974A
Expired / Lapsed
US
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New aromatic compounds containing tetrafluorethyl side chains and a process for preparing them
Assignee: Hoechst AG
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Filing: 1955-09-07
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Granted: 1958-12-02
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Expires: 1975-09-07
Abstract
No abstract record available.
Inventors
- 👤 Sieglitz Adolf
- 👤 Bestian Herbert
- 👤 Rehn Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:11
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/07; C07C205/11; C07C17/00; C07C17/26; C07C17/272; C07C17/275; C07C17/32; C07C209/00; C07C209/30; C07C209/32; C07C209/36; C07C209/365; C07C41/00; C07C41/01; C07C41/18; C07C41/30; C07C67/00; C07C67/30; C07C67/333; C07C67/343
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
76 words
THE PROCESS OF PREPARING A FLUORINATED AROMATIC COMPOUND, WHICH COMPRISES REACTING AN AROMATIC COMPOUND HAVING AT LEAST ONE HYDROGEN ATOM BOUND TO THE NECLEUS WITH TETRAFLUORETHYLENE AT TEMPERATURES BETWEEN ABOUT 50 AND ABOUT 300*C. AND AT PRESSURES BETWEEN ABOUT 20 AND ABOUT 400 ATMOSPHERES IB THE PRESENCE OF CARBON MONOXIDE, HYDROGEN AND A COBALT CARBONYL COMPOUND CONSISTING OF COBALT AND A MEMEBER SELECTED FROM THE GROUP CONSISTING OF CARBON MOMOXIDE ALONE AND CARBON MONOXIDE PLUS HYDROGEN,
Claim 2
Dependent Claim
76 words
THE PROCESS OF PREPARING A FLUORINATED AROMATIC COMPOUND, WHICH COMPRISES REACTING AN AROMATIC COMPOUND HAVING AT LEAST ONE HYDROGEN ATOM BOUND TO THE NECLEUS WITH TETRAFLUORETHYLENE AT TEMPERATURES BETWEEN ABOUT 50 AND ABOUT 300*C. AND AT PRESSURES BETWEEN ABOUT 20 AND ABOUT 400 ATMOSPHERES IB THE PRESENCE OF CARBON MONOXIDE, HYDROGEN AND A COBALT CARBONYL COMPOUND CONSISTING OF COBALT AND A MEMEBER SELECTED FROM THE GROUP CONSISTING OF CARBON MOMOXIDE ALONE AND CARBON MONOXIDE PLUS HYDROGEN,
Claim 3
Dependent Claim
16 words
A PROCES AS DEFINED IN CLAIM 1, WHEREIN THE AROMATIC COMPOUND TO BE REACTED IS ANISOL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |