US2565463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbonylation of aryl halides
Assignee: EIDP Inc
•
Filing: 1949-05-28
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Granted: 1951-08-28
•
Expires: 1969-05-28
Abstract
No abstract record available.
Inventors
- 👤 Georges E Tabet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:32
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE METHOD FOR CARBONYLATION OF COMPOUNDS HAVING A HALOGEN ATOM OF THE CLASS CONSISTING OF CHLORINE AND BROMINE ATTACHED TO AN AROMATIC NUCLEUS WHICH COMPRISES CARRYING OUT THE SAID CARBONYLATION REACTION IN THE PRESENCE OF A CARBENYL OF A METAL OF THE IRON SUB-GROUP AND A SUBSTANTIALLY ANHYDROUS ALKANOIC ACID SAID PROCESS BEING CARRIED WITHOUT INTRODUCTION OF WATER.
Claim 2
Independent Claim
58 words
THE METHOD FOR CARBONYLATION OF COMPOUNDS HAVING A HALOGEN ATOM OF THE CLASS CONSISTING OF CHLORINE AND BROMINE ATTACHED TO AN AROMATIC NUCLEUS WHICH COMPRISES CARRYING OUT THE SAID CARBONYLATION REACTION IN THE PRESENCE OF A CARBENYL OF A METAL OF THE IRON SUB-GROUP AND A SUBSTANTIALLY ANHYDROUS ALKANOIC ACID SAID PROCESS BEING CARRIED WITHOUT INTRODUCTION OF WATER.
References Cited (Backward Citations)
BE448884A
Cited
GB308666A
Cited
US2062344A
Cited
US2084284A
Cited
US2053233A
Cited
GB581278A
Cited
US2411982A
Cited
GB621520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |