Patent US2506571A successfully refreshed from Google Patents.
US2506571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetals from acrylonitrile, carbon monoxide, hydrogen, and alcohols
Assignee: EIDP Inc
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Filing: 1948-08-10
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Granted: 1950-05-09
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Expires: 1968-08-10
Abstract
No abstract record available.
Inventors
- 👤 Barrick Paul Latrell
- 👤 Pavlic Albert Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:32
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS WHICH COMPRISES HEATING, AT REACTION TEMPERATURE WITHIN THE RANGE 100-200*C. AND AT A PRESSURE OF AT LEAST 600 ATMOSPHERES, ACRYLONITRILE WITH, PER MOL OF NITRILE, AT LEAST TWO MOLS OF AN ALKANOL OF ONE TO FOUR CARBONS, AT LEAST ONE MOL OF CARBON MONOXIDE AND AT LEAST ONE MOL OF HYDROGEN IN THE PRESENCE OF A COBALT HYDROGENATION CATALYST, SAID ALCOHOL BEING INITIALLY PRESENT IN THE AMOUNT OF AT LEAST TWO MOLS PER MOL OF NITRILE.
Claim 2
Dependent Claim
78 words
A PROCESS WHICH COMPRISES HEATING, AT REACTION TEMPERATURE WITHIN THE RANGE 100-200*C. AND AT A PRESSURE OF AT LEAST 600 ATMOSPHERES, ACRYLONITRILE WITH, PER MOL OF NITRILE, AT LEAST TWO MOLS OF AN ALKANOL OF ONE TO FOUR CARBONS, AT LEAST ONE MOL OF CARBON MONOXIDE AND AT LEAST ONE MOL OF HYDROGEN IN THE PRESENCE OF A COBALT HYDROGENATION CATALYST, SAID ALCOHOL BEING INITIALLY PRESENT IN THE AMOUNT OF AT LEAST TWO MOLS PER MOL OF NITRILE.
References Cited (Backward Citations)
US2437600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |