US2565464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbonylation of aryl halides
Assignee: EIDP Inc
•
Filing: 1950-12-22
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Granted: 1951-08-28
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Expires: 1970-12-22
Abstract
No abstract record available.
Inventors
- 👤 Georges E Tabet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:09
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD FOR CARBONYLATION OF COMPOUNDS HAVING A HALOGEN ATOM OF THE CLASS CONSISTING OF CHORINE AND BROMINE ATTACHED TO AN AROMATIC NUCLEUS WHICH COMPRISES CARRYING OUT THE SAID CARBONYLATION REACTION IN THE PRESENCE OF A CAR BONYL OF A METAL OF THE IRON SUB-GROUP, AND AN ESTER OF THE CLASS CONSISTING OF ALKYL FORMATES, CARBONATES, OXALATES, AND ORTHOCARBOXYLATES, SAID ESTER BEING INTRODUCED INITIALLY INTO THE REACTION VESSEL.
Claim 2
Independent Claim
68 words
THE METHOD FOR CARBONYLATION OF COMPOUNDS HAVING A HALOGEN ATOM OF THE CLASS CONSISTING OF CHORINE AND BROMINE ATTACHED TO AN AROMATIC NUCLEUS WHICH COMPRISES CARRYING OUT THE SAID CARBONYLATION REACTION IN THE PRESENCE OF A CAR BONYL OF A METAL OF THE IRON SUB-GROUP, AND AN ESTER OF THE CLASS CONSISTING OF ALKYL FORMATES, CARBONATES, OXALATES, AND ORTHOCARBOXYLATES, SAID ESTER BEING INTRODUCED INITIALLY INTO THE REACTION VESSEL.
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) | 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 |