US2744134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of aliphatic carboxylic acid amides from saturated aliphatic hydrocarbons
Assignee: EIDP Inc
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Filing: 1950-07-29
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Granted: 1956-05-01
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Expires: 1970-07-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Marcus A Naylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:44
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR PREPARING ALKANOIC AMIDES WHICH COMPRISES INTRODUCING AN ALKANE HAVING FROM 3 TO 8 CARBON ATOMS PER MOLECULE, SULFUR, WATER AND AMMONIA INTO A PRESSURE-RESISTANT VESSEL, AND THEREAFTER HEATING THE RESULTANT MIXTURE UNDER SUPERATMOSPHERIC PRESSURE AT A TEMPERATURE IN THE RANGE OF 300* C. TO 360* C., WHEREBY ALKANOIC AMIDE FORMATION OCCURS, AND SEPARATING FROM THE RESULTING MIXTURE THE SAID ALKANOIC AMIDE THUS PRODUCED.
Claim 2
Dependent Claim
66 words
A PROCESS FOR PREPARING ALKANOIC AMIDES WHICH COMPRISES INTRODUCING AN ALKANE HAVING FROM 3 TO 8 CARBON ATOMS PER MOLECULE, SULFUR, WATER AND AMMONIA INTO A PRESSURE-RESISTANT VESSEL, AND THEREAFTER HEATING THE RESULTANT MIXTURE UNDER SUPERATMOSPHERIC PRESSURE AT A TEMPERATURE IN THE RANGE OF 300* C. TO 360* C., WHEREBY ALKANOIC AMIDE FORMATION OCCURS, AND SEPARATING FROM THE RESULTING MIXTURE THE SAID ALKANOIC AMIDE THUS PRODUCED.
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) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |