US2543038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective hydrogenation of aldehydes
Assignee: MW Kellogg Co
•
Filing: 1947-12-30
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Granted: 1951-02-27
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Expires: 1967-12-30
Abstract
No abstract record available.
Inventors
- 👤 Henry G Mcgrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:35
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/14; C07C29/141
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A METHOD FOR PRODUCING ALCOHOLS WHICH COMPRISES SUBJECTING A MIXTURE COMPRISING AN ALDEHYDE AND A KETONE TO SELECTIVE HYDROGENATION AT A TEMPERATURE BETWEEN ABOUT 200* F. AND ABOUT 225* F. AND AT A PRESSURE BETWEEN ABOUT 300 AND ABOUT 500 POUNDS PER SQUARE INCH ABSOLUTE IN THE PRESENCE OF A HYDROGENATION CATALYST COMPRISING A MIXTURE OF COPPER OXIDE AND CHROMIUM OXIDE IN A RATIO OF ABOUT 1:2 TO CONVERT SAID ALDEHYDE TO AN ALCOHOL WITHOUT SUBSTANTIALLY HYDROGENATION OF SAID KETONE.
Claim 2
Independent Claim
80 words
A METHOD FOR PRODUCING ALCOHOLS WHICH COMPRISES SUBJECTING A MIXTURE COMPRISING AN ALDEHYDE AND A KETONE TO SELECTIVE HYDROGENATION AT A TEMPERATURE BETWEEN ABOUT 200* F. AND ABOUT 225* F. AND AT A PRESSURE BETWEEN ABOUT 300 AND ABOUT 500 POUNDS PER SQUARE INCH ABSOLUTE IN THE PRESENCE OF A HYDROGENATION CATALYST COMPRISING A MIXTURE OF COPPER OXIDE AND CHROMIUM OXIDE IN A RATIO OF ABOUT 1:2 TO CONVERT SAID ALDEHYDE TO AN ALCOHOL WITHOUT SUBSTANTIALLY HYDROGENATION OF SAID KETONE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |