Patent US2633475A successfully refreshed from Google Patents.
US2633475A
Expired / Lapsed
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Catalytic dehydrogenation of secondary alcohols to ketones
Assignee: Standard Oil Development Co
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Filing: 1950-01-10
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Granted: 1953-03-31
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Expires: 1970-01-10
Abstract
No abstract record available.
Inventors
- 👤 Henry O Mottern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:38
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PROCESS FOR CONVERTING SECONDARY ALIPHATIC ALCOHOLS TO KETONES WHICH COMPRISES PASSING THE ALCOHOL IN THE VAPOR PHASE UNDER CONVERSION CONDITIONS OF TEMPERATURE AND PRESSURE OVER A CATALYST COMPRISING A GROUP II METAL OXIDE COATED ON LUMPS OF FUSED ZIRCONIA OBTAINED FROM THE DISTILLATION OF ZIRCONIA SANDS.
Claim 2
Dependent Claim
47 words
A PROCESS FOR CONVERTING SECONDARY ALIPHATIC ALCOHOLS TO KETONES WHICH COMPRISES PASSING THE ALCOHOL IN THE VAPOR PHASE UNDER CONVERSION CONDITIONS OF TEMPERATURE AND PRESSURE OVER A CATALYST COMPRISING A GROUP II METAL OXIDE COATED ON LUMPS OF FUSED ZIRCONIA OBTAINED FROM THE DISTILLATION OF ZIRCONIA SANDS.
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US2279199A
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US2436733A
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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) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |