US2584036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azeotropic dehydration of aqueous chloral mixtures
Assignee: Merck and Co Inc
•
Filing: 1946-04-13
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Granted: 1952-01-29
•
Expires: 1966-04-13
Abstract
No abstract record available.
Inventors
- 👤 John F Mahoney
- 👤 Pierson Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:50
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/78; C07C45/81; C07C45/82; C07C45/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
IN A PROCESS FOR THE RECOVERY OF CHLORAL FROM ITS AQUEOUS SOLUTIONS THE STEPS COMPRISING ADDING BENZENE, DISTILLING AN AZEOTROP OF SAID BENZENE WITH WATER FROM THE CHLORAL, AND RECOVERING CHLORAL FROM THE RESIDUE.
Claim 2
Dependent Claim
34 words
IN A PROCESS FOR THE RECOVERY OF CHLORAL FROM ITS AQUEOUS SOLUTIONS THE STEPS COMPRISING ADDING BENZENE, DISTILLING AN AZEOTROP OF SAID BENZENE WITH WATER FROM THE CHLORAL, AND RECOVERING CHLORAL FROM THE RESIDUE.
References Cited (Backward Citations)
US1290124A
Cited
US1386118A
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US2050235A
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US2144654A
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US2194851A
Cited
US2406648A
Cited
US2462444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-28 | 1955-07-30 | 1956-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-28 | 1959-07-30 | 1960-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-28 | 1963-07-30 | 1964-01-29 | $7700.00 | Window Closed / Lapsed |