US2582214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for drying alcohols and ketones
Assignee: Distillers Co Yeast Ltd
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Filing: 1947-03-20
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Granted: 1952-01-08
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Expires: 1967-03-20
Abstract
No abstract record available.
Inventors
- 👤 Twigg George Hilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:28
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/80; C07C29/82; C07C29/86; C07C45/00; C07C45/78; C07C45/80; C07C45/81; C07C45/82; C07C45/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PROCESS FOR THE DEHYDRATION OF A PARTIALLY WATER-MISCIBLE COMPOUND, CAPABLE OF FORMING A HOMOGENEOUS WATER AZEOTROPE, CAPABLE OF FORMING A GROUP CONSISTING OF ALCOHOLS AND KETONES, WHICH COMPRISES ADDING TO A HOMOGENEOUS AQUEOUS SOLUTION OF SAID COMPOUND CONTAINING AT LEAST AS MUCH WATER AS THE CORRESPONDING AZEOTROPE, A BENZENE HYDROCARBON HAVING AT LEAST ONE NUCLEAR ALKYL SUBSTITUENT OF ONE TO FOUR CARBON ATOMS AND WHICH HAS A BOILING POINT AT LEAST 40* C. HIGHER THAN SAID COMPOUND AND IS MISCIBLE THEREWITHSEPARATING THE RESULTING OIL LAYER AND AQUEOUS LAYER AND FEEDING SAID OIL LAYER CONTINUOUSLY TO A FIRST STILL, THE WATER-AZAOTROPE OF SAID COMPOUND BEING CONTINUOUSLY RECYCLED FROM SAID FIRST STILL AS DISTILLATE TO BE ADMIXED WITH SAID BENZENE HYDROCARBON, AND THE RESIDUE FROM SAID FIRST STILL
Claim 2
Dependent Claim
127 words
A PROCESS FOR THE DEHYDRATION OF A PARTIALLY WATER-MISCIBLE COMPOUND, CAPABLE OF FORMING A HOMOGENEOUS WATER AZEOTROPE, CAPABLE OF FORMING A GROUP CONSISTING OF ALCOHOLS AND KETONES, WHICH COMPRISES ADDING TO A HOMOGENEOUS AQUEOUS SOLUTION OF SAID COMPOUND CONTAINING AT LEAST AS MUCH WATER AS THE CORRESPONDING AZEOTROPE, A BENZENE HYDROCARBON HAVING AT LEAST ONE NUCLEAR ALKYL SUBSTITUENT OF ONE TO FOUR CARBON ATOMS AND WHICH HAS A BOILING POINT AT LEAST 40* C. HIGHER THAN SAID COMPOUND AND IS MISCIBLE THEREWITHSEPARATING THE RESULTING OIL LAYER AND AQUEOUS LAYER AND FEEDING SAID OIL LAYER CONTINUOUSLY TO A FIRST STILL, THE WATER-AZAOTROPE OF SAID COMPOUND BEING CONTINUOUSLY RECYCLED FROM SAID FIRST STILL AS DISTILLATE TO BE ADMIXED WITH SAID BENZENE HYDROCARBON, AND THE RESIDUE FROM SAID FIRST STILL
References Cited (Backward Citations)
US1394232A
Cited
US1524192A
Cited
US1911832A
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US2404163A
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US2411437A
Cited
US2375478A
Cited
US2428611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |