US2697729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of ketones from carboxylic acids and esters thereof
Assignee: JBS USA LLC
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Filing: 1952-04-22
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Granted: 1954-12-21
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Expires: 1972-04-22
Abstract
No abstract record available.
Inventors
- 👤 John L Ohlson
- 👤 Charles W Hoerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:17
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/45; C07C45/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A METHOD FOR THE PREPARATION OF KETONES WHICH CONSISTS OF CONTACTING AN "ACTIVATED" ALUMINA CATALYST WITH A CARBOXYLIC ACID REACTANT CONTAINING AS AN ESSENTIAL COMPONENT AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF CARBOXYLIC ACIDS HAVING AT LEAST ONE HYDROGEN ON THE CARBON ALPHA TO THE CARBOXYL GROUP, THE METHYL AND ETHYL ESTERS OF SUCH ACIDS, AND MIXTURES THEREOF, SAID ESSENTIAL COMPONENT BEING SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC MONO- AND DI-BASIC ACIDS, CYCLOALIPHATIC ACIDS, AROMATIC-SUBSTITUTED ALIPHATIC ACIDS CONTAINING AN ALPHA-HYDROGEN ATOM, THE METHYL AND ETHYL ESTERS OF SUCH ACIDS, AND MIXTURES THEREOF, IN THE LIQUID PHASE AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 300* C. TO ABOUT 400* C.
Claim 2
Independent Claim
113 words
A METHOD FOR THE PREPARATION OF KETONES WHICH CONSISTS OF CONTACTING AN "ACTIVATED" ALUMINA CATALYST WITH A CARBOXYLIC ACID REACTANT CONTAINING AS AN ESSENTIAL COMPONENT AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF CARBOXYLIC ACIDS HAVING AT LEAST ONE HYDROGEN ON THE CARBON ALPHA TO THE CARBOXYL GROUP, THE METHYL AND ETHYL ESTERS OF SUCH ACIDS, AND MIXTURES THEREOF, SAID ESSENTIAL COMPONENT BEING SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC MONO- AND DI-BASIC ACIDS, CYCLOALIPHATIC ACIDS, AROMATIC-SUBSTITUTED ALIPHATIC ACIDS CONTAINING AN ALPHA-HYDROGEN ATOM, THE METHYL AND ETHYL ESTERS OF SUCH ACIDS, AND MIXTURES THEREOF, IN THE LIQUID PHASE AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 300* C. TO ABOUT 400* C.
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) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |