US3231600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of aromatic nitriles
Assignee: ExxonMobil Oil Corp
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Filing: 1962-02-02
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Granted: 1966-01-25
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Expires: 1982-02-02
Abstract
No abstract record available.
Inventors
- 👤 Daniel G Jones
- 👤 Phillip S Landis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:56
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C07; C07C; C07C253/00; C07C253/24; C07C253/28; C07C255/00; C07C255/49; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PROCESS FOR PRODUCING AROMATIC NITRILES THAT COMPRISES CONTACTING AMMONIA AND A LOWER ALKYL-SUBSTITUTED AROMATIC HYDROCARBON, IN A MOLAR RATIO OF AMMONIA TO SAID HYDROCARBON OF AT LEAST ABOUT 2:1, AT A TEMPERATURE OF BETWEEN ABOUT 850*F. AND ABOUT 1200*F., AND FOR A CONTACT TIME OF BETWEEN ABOUT 0.01 SECOND AND ABOUT 20 MINUTES, WITH A SEMI-POROUS REFRACTORY OXIDE HAVING A HEAVY METAL SELECTED FROM THE GROUP OF METALS HAVING ATOMIC NUMBERS OF 23 TO 30, INCLUSIVE, 43 TO 48, INCLUSIVE, AND 75 TO 80, INCLUSIVE, IONICALLY COMBINED THEREWITH.
Claim 2
Dependent Claim
89 words
A PROCESS FOR PRODUCING AROMATIC NITRILES THAT COMPRISES CONTACTING AMMONIA AND A LOWER ALKYL-SUBSTITUTED AROMATIC HYDROCARBON, IN A MOLAR RATIO OF AMMONIA TO SAID HYDROCARBON OF AT LEAST ABOUT 2:1, AT A TEMPERATURE OF BETWEEN ABOUT 850*F. AND ABOUT 1200*F., AND FOR A CONTACT TIME OF BETWEEN ABOUT 0.01 SECOND AND ABOUT 20 MINUTES, WITH A SEMI-POROUS REFRACTORY OXIDE HAVING A HEAVY METAL SELECTED FROM THE GROUP OF METALS HAVING ATOMIC NUMBERS OF 23 TO 30, INCLUSIVE, 43 TO 48, INCLUSIVE, AND 75 TO 80, INCLUSIVE, IONICALLY COMBINED THEREWITH.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |