US2646394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refining of long chain aliphatic alcohols
Assignee: EIDP Inc
•
Filing: 1950-12-27
•
Granted: 1953-07-21
•
Expires: 1970-12-27
Abstract
No abstract record available.
Inventors
- 👤 Ralph V Green
- 👤 Ernest P Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:53
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN A PROCESS FOR THE RECOVERY OF LONG CHAIN ALIPHATIC ALCOHOLS FROM THE REACTION MIXTURE OBTAINED BY THE HYDROGENATION OF COMPOUNDS OF THE GROUP CONSISTING OF CORRESPONDING LONG CHAIN ALIPHATIC ACIDS AND THEIR ESTERS IN THE PRESENCE OF A METAL HYDROGENATION CATALYST, THE STEPS WHICH COMPRISE SEPARATING BY FILTRATION THE SOLID CATALYST FROM THE REACTION MIXTURE AND THEREAFTER PRECIPITATING DISSOLVED METALS FROM THE SOLID CATALYST-FREE REACTION MIXTURE FROM HYDROGENATION TO GIVE LESS THAN 50 P.P.M. OF DISSOLVED METAL PRIOR TO RECOVERING THE LONG CHAIN ALIPHATIC ALCOHOLS THEREFROM BY DISTILLATION.
Claim 2
Dependent Claim
89 words
IN A PROCESS FOR THE RECOVERY OF LONG CHAIN ALIPHATIC ALCOHOLS FROM THE REACTION MIXTURE OBTAINED BY THE HYDROGENATION OF COMPOUNDS OF THE GROUP CONSISTING OF CORRESPONDING LONG CHAIN ALIPHATIC ACIDS AND THEIR ESTERS IN THE PRESENCE OF A METAL HYDROGENATION CATALYST, THE STEPS WHICH COMPRISE SEPARATING BY FILTRATION THE SOLID CATALYST FROM THE REACTION MIXTURE AND THEREAFTER PRECIPITATING DISSOLVED METALS FROM THE SOLID CATALYST-FREE REACTION MIXTURE FROM HYDROGENATION TO GIVE LESS THAN 50 P.P.M. OF DISSOLVED METAL PRIOR TO RECOVERING THE LONG CHAIN ALIPHATIC ALCOHOLS THEREFROM BY DISTILLATION.
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) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |