US2533944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of ketoesters
Assignee: Uniroyal Inc
•
Filing: 1946-11-09
•
Granted: 1950-12-12
•
Expires: 1966-11-09
Abstract
No abstract record available.
Inventors
- 👤 Elbert C Ladd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:26
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/66; C07C69/67; C07C69/716; C07C45/00; C07C67/00; C07C67/28; C07C67/293
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
PROCESS OF PREPARING A KETOESTER WHICH COMPRISES REACTING A PRIMARY ALIPHATIC ALDEHYDE HAVING THE TYPE FORMULA RCHO IN WHICH R IS A SATURATED LINEAR HYDROCARBON WITH A 2-PROPENYL ESTER OF A MONOBASIC CARBOXYLIC ACID IN THE PRESENCE OF A PEROXIDIC CATALYST UNTIL SAID KETOESTER IS FORMED AND ISOLATING SAID KETOESTER.
Claim 2
Dependent Claim
50 words
PROCESS OF PREPARING A KETOESTER WHICH COMPRISES REACTING A PRIMARY ALIPHATIC ALDEHYDE HAVING THE TYPE FORMULA RCHO IN WHICH R IS A SATURATED LINEAR HYDROCARBON WITH A 2-PROPENYL ESTER OF A MONOBASIC CARBOXYLIC ACID IN THE PRESENCE OF A PEROXIDIC CATALYST UNTIL SAID KETOESTER IS FORMED AND ISOLATING SAID KETOESTER.
References Cited (Backward Citations)
US1872834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |