Patent US2642454A successfully refreshed from Google Patents.
US2642454A
Expired / Lapsed
US
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Process for making nitriles
Assignee: Phillips Petroleum Co
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Filing: 1949-11-23
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Granted: 1953-06-16
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Expires: 1969-11-23
Abstract
No abstract record available.
Inventors
- 👤 John E Mahan
- 👤 Stanley D Turk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:07
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PROCESS FOR THE PRODUCTION OF ACETONITRILE WHICH COMPRISES ADMIXING A THREE TO FIVE CARBON ATOM PARAFFIN WITH AMMONIA IN RELATIVE PROPORTIONS OF FROM 0.3 TO 5 MOLS OF AMMONIA PER MOL OF PARAFFIN AND PASSING THE RESULTING MIXTURE IN VAPOR PHASE AT A TEMPERATURE WITHIN THE RANGE OF FROM 800* F. TO 1000* F. AND AT A PRESSURE WITHIN THE RANGE OF FROM ATMOSPHERIC TO 250 POUNDS PER SQUARE INCH GAGE FOR A TIME OF FROM 0.5 TO 10 SECONDS INTO CONTACT WITH A CATALYST CONSISTING OF COBALT MOLYBDATE PRECIPITATED ON ALUMINA GEL AND HAVING A WEIGHT PER CENT COMPOSITION OF FROM 5 TO 25 PER CENT COBALT MOLYBDATE ON THE DRY BASIS.
Claim 2
Dependent Claim
114 words
A PROCESS FOR THE PRODUCTION OF ACETONITRILE WHICH COMPRISES ADMIXING A THREE TO FIVE CARBON ATOM PARAFFIN WITH AMMONIA IN RELATIVE PROPORTIONS OF FROM 0.3 TO 5 MOLS OF AMMONIA PER MOL OF PARAFFIN AND PASSING THE RESULTING MIXTURE IN VAPOR PHASE AT A TEMPERATURE WITHIN THE RANGE OF FROM 800* F. TO 1000* F. AND AT A PRESSURE WITHIN THE RANGE OF FROM ATMOSPHERIC TO 250 POUNDS PER SQUARE INCH GAGE FOR A TIME OF FROM 0.5 TO 10 SECONDS INTO CONTACT WITH A CATALYST CONSISTING OF COBALT MOLYBDATE PRECIPITATED ON ALUMINA GEL AND HAVING A WEIGHT PER CENT COMPOSITION OF FROM 5 TO 25 PER CENT COBALT MOLYBDATE ON THE DRY BASIS.
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) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |