US2607802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bromination of aromatic compounds
Assignee: Dow Chemical Co
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Filing: 1951-03-28
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Granted: 1952-08-19
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Expires: 1971-03-28
Abstract
No abstract record available.
Inventors
- 👤 Edgar C Britton
- 👤 Jr Russell M Tree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:15
CPC Classifications
C; C07; C07C; C07C201/00; C07C201/06; C07C201/12; C07B; C07B39/00; C07C17/00; C07C17/093; C07C17/10; C07C17/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A BROMINATION METHOD THAT COMPRISES CONTACTING BROMINE AND CHLORINE, IN A MOLECULAR RATIO OF FROM 0.7:1 TO 1,3:1, WITH AN AROMATIC ORGANIC COMPOUND WHOSE MOLECULAR STRUCTURE CONSISTS OF A BENZENE RING HAVING ATTACHED THERETO NOT MORE THAN THREE RADICALS, AS FOLLOWS: (A) NOT MORE TWO -NO2 GROUPS; (B) NOT MORE THAN TWO CARBONYL HALIDE RADICALS WHEREIN THE HALOGEN IS OF ATOMIC NUMBER FROM 17 THROUGH 35, INCLUSIVE, (C) NOT MORE THAN TWO -OM GROUPS WHEREIN M IS A HYDROCARBON RADICAL FREE OF ETHYLENIC AND ACETYLENIC UNSATURATIONS; (D) NOT MORE THAN TWO PHENYLS; AND (E) NOT MORE THAN THREE HALOGEN ATOMS OF ATOMIC NUMBER FROM 14 THROUGH 35 INCLUSIVE.
Claim 2
Dependent Claim
108 words
A BROMINATION METHOD THAT COMPRISES CONTACTING BROMINE AND CHLORINE, IN A MOLECULAR RATIO OF FROM 0.7:1 TO 1,3:1, WITH AN AROMATIC ORGANIC COMPOUND WHOSE MOLECULAR STRUCTURE CONSISTS OF A BENZENE RING HAVING ATTACHED THERETO NOT MORE THAN THREE RADICALS, AS FOLLOWS: (A) NOT MORE TWO -NO2 GROUPS; (B) NOT MORE THAN TWO CARBONYL HALIDE RADICALS WHEREIN THE HALOGEN IS OF ATOMIC NUMBER FROM 17 THROUGH 35, INCLUSIVE, (C) NOT MORE THAN TWO -OM GROUPS WHEREIN M IS A HYDROCARBON RADICAL FREE OF ETHYLENIC AND ACETYLENIC UNSATURATIONS; (D) NOT MORE THAN TWO PHENYLS; AND (E) NOT MORE THAN THREE HALOGEN ATOMS OF ATOMIC NUMBER FROM 14 THROUGH 35 INCLUSIVE.
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) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |