US2802876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of saturated ketones
Assignee: Huels AG
•
Filing: 1954-03-26
•
Granted: 1957-08-13
•
Expires: 1974-03-26
Abstract
No abstract record available.
Inventors
- 👤 Broich Franz
- 👤 Monkemeyer Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:21
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/37; C07C45/61; C07C45/65
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
PROCES FOR THE PRODUCTION OF METHYL-ISO-BUTYLKETONE, WHICH COMPRISES HYDROGENATING DIACETONE-ALCOHOL IN THE PRESENCE OF A HYDROGENATION CATALYST AND A FREE ACID WHICH IS NOT DESTROYED BY THE HYDROGENATION AT A TEMPERATURE OF FROM 150*C. TO 300*C.C.
Claim 2
Dependent Claim
36 words
PROCES FOR THE PRODUCTION OF METHYL-ISO-BUTYLKETONE, WHICH COMPRISES HYDROGENATING DIACETONE-ALCOHOL IN THE PRESENCE OF A HYDROGENATION CATALYST AND A FREE ACID WHICH IS NOT DESTROYED BY THE HYDROGENATION AT A TEMPERATURE OF FROM 150*C. TO 300*C.C.
References Cited (Backward Citations)
US2139360A
Cited
US2499172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |