US2885442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation of secondary alcohols
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1956-10-23
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Granted: 1959-05-05
•
Expires: 1976-10-23
Abstract
No abstract record available.
Inventors
- 👤 William J G Mcculloch
- 👤 Kirshenbaum Isidor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:40
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/002; B; B01; B01J; B01J35/00; B01J35/60; B01J35/61; B01J35/612
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS FOR PRODUCING KETONES BY THE DEHYDROGENATION OF A LOWER SECONDARY ALCHOL OF THREE TO EIGHT CARBON ATOMS WHICH COMPRISES CONTACTING SAID ALCOHOL AT A TEMPERATURE BETWEEN 600* AND 950* F. WITH A DIFFICULTLY REDUCIBLE METAL OXIDE DEHYDROGENATION CATALYST FOR SAID DEHYDROGENATION DEPOSITED ON AN ALPHA ALUMINA CARRIER HAVING A SURFACE AREA OF LESS THAN 5 METERS 2/GRAM.
Claim 2
Dependent Claim
59 words
A PROCESS FOR PRODUCING KETONES BY THE DEHYDROGENATION OF A LOWER SECONDARY ALCHOL OF THREE TO EIGHT CARBON ATOMS WHICH COMPRISES CONTACTING SAID ALCOHOL AT A TEMPERATURE BETWEEN 600* AND 950* F. WITH A DIFFICULTLY REDUCIBLE METAL OXIDE DEHYDROGENATION CATALYST FOR SAID DEHYDROGENATION DEPOSITED ON AN ALPHA ALUMINA CARRIER HAVING A SURFACE AREA OF LESS THAN 5 METERS 2/GRAM.
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) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |