Patent US3567805A successfully refreshed from Google Patents.
Patent US2499172A successfully refreshed from Google Patents.
US2499172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for converting lower-boiling ketones into higher-boiling ketones
Assignee: Commercial Solvents Corp
•
Filing: 1946-02-09
•
Granted: 1950-02-28
•
Expires: 1966-02-09
Abstract
No abstract record available.
Inventors
- 👤 Smith Everet Foy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:05
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C45/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PROCESS FOR PRODUCING KETONES FROM LOWERBOILING SATURATED ALIPHANTIC KETONES WHICH COMPRISES HEATING THE LOWER-BOILING SATURATED ALIPHATIC KETONES WITH HYDROGEN IN THE PRESENCE OF AN ALKALINE CONDENSATION CATALYST AND A HYDROGENATION CATALYST CONSISTING OF PALLADIUM.
Claim 2
Dependent Claim
35 words
A PROCESS FOR PRODUCING KETONES FROM LOWERBOILING SATURATED ALIPHANTIC KETONES WHICH COMPRISES HEATING THE LOWER-BOILING SATURATED ALIPHATIC KETONES WITH HYDROGEN IN THE PRESENCE OF AN ALKALINE CONDENSATION CATALYST AND A HYDROGENATION CATALYST CONSISTING OF PALLADIUM.
References Cited (Backward Citations)
US2158040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |