US3361822A
Expired / Lapsed
US
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Process for the selective hydrogenation of unsaturated ketones
Assignee: Scholven Chemie AG
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Filing: 1964-04-14
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Granted: 1968-01-02
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Expires: 1984-04-14
Abstract
No abstract record available.
Inventors
- 👤 Schmitt Karl
- 👤 Disteldorf Josef
- 👤 Schurbusch Horst
- 👤 Hilt Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:45
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/62; B; B01; B01D; B01D3/00; B01D3/009; B01J; B01J8/00; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN THE PROCESS FRO THE CONTINUOUS PRODUCTION OF SATURATED KETONES FROM UNSATURATED KETONES SELECTED FROM THE GROUP CONSISTING OF MESITYL, OXIDE, ISOPHORONE AND HOMOISOPHORONE, BY CATALYTIC HYDROGENATION AT TEMPERATURES BETWEEN ABOUT 50-250*C., THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE CATALYTIC HYDROGENATION IN A DISTILLATION ZONE WHILE DISTILLING OFF AND RECOVERING FROM SUCH DISTILLATION ZONE THE SATURATED KETONE BEING PRO-
Claim 2
Dependent Claim
59 words
IN THE PROCESS FRO THE CONTINUOUS PRODUCTION OF SATURATED KETONES FROM UNSATURATED KETONES SELECTED FROM THE GROUP CONSISTING OF MESITYL, OXIDE, ISOPHORONE AND HOMOISOPHORONE, BY CATALYTIC HYDROGENATION AT TEMPERATURES BETWEEN ABOUT 50-250*C., THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE CATALYTIC HYDROGENATION IN A DISTILLATION ZONE WHILE DISTILLING OFF AND RECOVERING FROM SUCH DISTILLATION ZONE THE SATURATED KETONE BEING PRO-
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) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |