US2517898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing aromatic acyl fluorides
Assignee: EIDP Inc
•
Filing: 1948-12-24
•
Granted: 1950-08-08
•
Expires: 1968-12-24
Abstract
No abstract record available.
Inventors
- 👤 Robert G Linville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:40
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A METHOD FOR PREPARING AN AROMATIC ACYL FLUORIDE WHICH COMPRISES REACTING UNDER ANHYDROUS CONDITIONS IN AN INERT SOLVENT AN AROMATIC DIAZONIUM FLUOBORATE WITH CARBON MONOXIDE AT A TEMPERATURE WITHIN THE RANGE OF ORDINARY TEMPERATURE TO 125*C. AND UNDER A PRESSURE WITHIN THE RANGE OF ATMOSPHERIC TO 1000 ATMOSPHERES.
Claim 2
Independent Claim
48 words
A METHOD FOR PREPARING AN AROMATIC ACYL FLUORIDE WHICH COMPRISES REACTING UNDER ANHYDROUS CONDITIONS IN AN INERT SOLVENT AN AROMATIC DIAZONIUM FLUOBORATE WITH CARBON MONOXIDE AT A TEMPERATURE WITHIN THE RANGE OF ORDINARY TEMPERATURE TO 125*C. AND UNDER A PRESSURE WITHIN THE RANGE OF ATMOSPHERIC TO 1000 ATMOSPHERES.
References Cited (Backward Citations)
GB308666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |