US2565461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbonylation of aromatic halides
Assignee: Individual
•
Filing: 1949-05-28
•
Granted: 1951-08-28
•
Expires: 1969-05-28
Abstract
No abstract record available.
Inventors
- 👤 Bliss Harding
- 👤 Raymond W Southworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:03
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
THE METHOD FOR CARBONYLATION OF COMPOUNDS HAVING A HALOGEN ATOM OF THE CLASS CONSISTING OF CHLORINE BROMINE AND IODINE ATTACHED DIRECTLY TO AN AROMATIC NUCLEUS WHICH COMPRISES CARRYING OUT THE SAID CARBONYLATION REACTION IN THE PRESENCE OF A CARBONYL OF A METAL OF THE IRON SUBGROUP.
Claim 2
Independent Claim
46 words
THE METHOD FOR CARBONYLATION OF COMPOUNDS HAVING A HALOGEN ATOM OF THE CLASS CONSISTING OF CHLORINE BROMINE AND IODINE ATTACHED DIRECTLY TO AN AROMATIC NUCLEUS WHICH COMPRISES CARRYING OUT THE SAID CARBONYLATION REACTION IN THE PRESENCE OF A CARBONYL OF A METAL OF THE IRON SUBGROUP.
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 |