US2551626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of normal alcohols from branched chain alcohols
Assignee: Standard Oil Development Co
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Filing: 1948-06-24
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Granted: 1951-05-08
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Expires: 1968-06-24
Abstract
No abstract record available.
Inventors
- 👤 Charles E Morrell
- 👤 Carl S Carlson
- 👤 Jr Paul V Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:07
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/80; C07C29/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE METHOD OF SEPARATING A WIDE-BOILING MIXTURE OF NORMAL PRIMARY, SECONDARY, TERTIARY AND BRANCHED PRIMARY ALCOHOLS, BOILING WITHIN THE RANGE OF N-PENTANOL AND INCLUDING ETHANOL WHEREIN ETHANOL IS PRESENT AS THE MAJOR ALCOHOL CONSTITUENT AND THE REMAINING ALCOHOLS ARE PRESENT ONLY IN MINOR QUANTITIES RELATIVE TO ETHANOL, WHICH COMPRISES INTRODUCING SAID MIXTURE INTO THE MID-SECTION OF A FRACTIONATION ZONE WHEREIN VAPORS OF SAID ALCOHOLS ASCEND COUNTERCURRENTLY TO A LIQUID REFLUX OF THE ALCOHOLS DISSOLVED IN
Claim 2
Independent Claim
75 words
THE METHOD OF SEPARATING A WIDE-BOILING MIXTURE OF NORMAL PRIMARY, SECONDARY, TERTIARY AND BRANCHED PRIMARY ALCOHOLS, BOILING WITHIN THE RANGE OF N-PENTANOL AND INCLUDING ETHANOL WHEREIN ETHANOL IS PRESENT AS THE MAJOR ALCOHOL CONSTITUENT AND THE REMAINING ALCOHOLS ARE PRESENT ONLY IN MINOR QUANTITIES RELATIVE TO ETHANOL, WHICH COMPRISES INTRODUCING SAID MIXTURE INTO THE MID-SECTION OF A FRACTIONATION ZONE WHEREIN VAPORS OF SAID ALCOHOLS ASCEND COUNTERCURRENTLY TO A LIQUID REFLUX OF THE ALCOHOLS DISSOLVED IN
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |