Patent US2561787A successfully refreshed from Google Patents.
US2561787A
Expired / Lapsed
US
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Production of nitriles
Assignee: ExxonMobil Oil Corp
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Filing: 1949-06-15
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Granted: 1951-07-24
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Expires: 1969-06-15
Abstract
No abstract record available.
Inventors
- 👤 William I Denton
- 👤 Richard B Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:56
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/18; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR THE PRODUCTION OF NITRILES HAVING AT LEAST TWO CARBON ATOMS PER MOLECULE, THAT COMPRISES REACTING AN OLEFINIC HYDROCARBON CONTAINING UP TO ABOUT TEN CARBON ATOMS PER MOLECULE WITH AMMONIA, IN VAPOR PHASE, AT A TEMPERATURE VARYING BETWEEN ABOUT 850* F. AND ABOUT 1075* F., IN THE PRESENCE OF A SALT SELECTED FROM THE GROUP CONSISTING OF NICKEL PHOSPHATE, COBALT CHLORIDE, AND COBALT PHOSPHATE, AS THE CATALYST.
Claim 2
Dependent Claim
69 words
A PROCESS FOR THE PRODUCTION OF NITRILES HAVING AT LEAST TWO CARBON ATOMS PER MOLECULE, THAT COMPRISES REACTING AN OLEFINIC HYDROCARBON CONTAINING UP TO ABOUT TEN CARBON ATOMS PER MOLECULE WITH AMMONIA, IN VAPOR PHASE, AT A TEMPERATURE VARYING BETWEEN ABOUT 850* F. AND ABOUT 1075* F., IN THE PRESENCE OF A SALT SELECTED FROM THE GROUP CONSISTING OF NICKEL PHOSPHATE, COBALT CHLORIDE, AND COBALT PHOSPHATE, AS THE CATALYST.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |