US3171859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of unsaturated aldehydes or ketones
Assignee: Knapsack AG
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Filing: 1960-12-19
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Granted: 1965-03-02
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Expires: 1980-12-19
Abstract
No abstract record available.
Inventors
- 👤 Sennewald Kurt
- 👤 Gehrmann Klaus
- 👤 Vogt Wilhelm
- 👤 Schafer Stefan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:38
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/31; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/19; B01J27/192
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PROCESS FOR THE MANUFACTURE OF ACROLEIN, WHICH COMPRISES TREATING PROPYLENE IN THE PRESENCE OF STEAM WITH A GAS SELECTED FROM THE GROUP CONSISTING OF AIR, OXYGEN AND MIXTURES THEREOF AT TEMPERATURES BETWEEN ABOUT 230*C. AND 500*C. AND PRESSURES BETWEEN ABOUT 0.1 ATMOSPHERE ABSOLUTE AND 10 ATMOSPHERES GAUGE IN THE PRESENCE OF A CATALYST OF THE EMPIRICAL FORMULA FEABIBPCMODOE, WHEREIN (A) IS 0.1 TO 12, (B) IS 0.1 TO 12, (C) IS 0 TO 10, (D) IS ABOUT 12, AND (E) IS 35 TO 81, THE ELEMENTS FE, BI, P AND MO BEING PRESENT IN THE FORM OF THEIR OXIDES.
Claim 2
Dependent Claim
100 words
A PROCESS FOR THE MANUFACTURE OF ACROLEIN, WHICH COMPRISES TREATING PROPYLENE IN THE PRESENCE OF STEAM WITH A GAS SELECTED FROM THE GROUP CONSISTING OF AIR, OXYGEN AND MIXTURES THEREOF AT TEMPERATURES BETWEEN ABOUT 230*C. AND 500*C. AND PRESSURES BETWEEN ABOUT 0.1 ATMOSPHERE ABSOLUTE AND 10 ATMOSPHERES GAUGE IN THE PRESENCE OF A CATALYST OF THE EMPIRICAL FORMULA FEABIBPCMODOE, WHEREIN (A) IS 0.1 TO 12, (B) IS 0.1 TO 12, (C) IS 0 TO 10, (D) IS ABOUT 12, AND (E) IS 35 TO 81, THE ELEMENTS FE, BI, P AND MO BEING PRESENT IN THE FORM OF THEIR OXIDES.
References Cited (Backward Citations)
US2941007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |