Patent US2675413A successfully refreshed from Google Patents.
US2675413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of unsaturated halides by exchange of halogen atoms
Assignee: Shell Development Co
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Filing: 1952-11-20
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Granted: 1954-04-13
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Expires: 1972-11-20
Abstract
No abstract record available.
Inventors
- 👤 Seaver A Ballard
- 👤 Richard R Whetstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:02
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
IN THE METHOD OF PRODUCING 1-CHLORO-3BROMO-1-PROPENE BY CONTACTING 1,3-DICHLOROPROPENE WITH A METAL BROMIDE, THE IMPROVEMENT WHICH COMPRISES HEATING A MIXTURE OF 1,3-DICHLOROPROPENE AND AN AMOUNT OF A SUBSTANTIALLY SATURATED AQUEOUS SOLUTION OF SODIUM BROMIDE CONTAINING SUBSTANTIALLY ONE EQUIVALENT WEIGHT OF BROMINE FOR EACH MOLE OF ORGANIC HALIDE, AT THE REFLUX TEMPERATURE OF THE MIXTURE.
Claim 2
Dependent Claim
54 words
IN THE METHOD OF PRODUCING 1-CHLORO-3BROMO-1-PROPENE BY CONTACTING 1,3-DICHLOROPROPENE WITH A METAL BROMIDE, THE IMPROVEMENT WHICH COMPRISES HEATING A MIXTURE OF 1,3-DICHLOROPROPENE AND AN AMOUNT OF A SUBSTANTIALLY SATURATED AQUEOUS SOLUTION OF SODIUM BROMIDE CONTAINING SUBSTANTIALLY ONE EQUIVALENT WEIGHT OF BROMINE FOR EACH MOLE OF ORGANIC HALIDE, AT THE REFLUX TEMPERATURE OF THE MIXTURE.
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) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |