US2540787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of benzonitrile
Assignee: ExxonMobil Oil Corp
•
Filing: 1948-12-01
•
Granted: 1951-02-06
•
Expires: 1968-12-01
Abstract
No abstract record available.
Inventors
- 👤 Frank A Klimitas
- 👤 Herbert E Rasmussen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:51
CPC Classifications
C; C07; C07C; C07C255/00; C07C255/49
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
IN THE ADIABATIC PROCESS FOR THE PRODUCTION OF BENZONITRILE, WHICH COMPRISES CONTACTING TOLUENE WITH AMMONIA, IN THE GASEOUS PHASE, IN AN ADIABATIC REACTION ZONE, AT TEMPERATURES VARYING BETWEEN ABOUT 800* F. AND ABOUT 1250* F., AND IN THE PRESENCE OF A CATALYST COMPRISING A MOLYBDENUM OXIDE; THE IMPROVEMENT WHICH INCLUDES INTRODUCING WATER INTO SAID ADIABATIC REACTION ZONE.
Claim 2
Dependent Claim
57 words
IN THE ADIABATIC PROCESS FOR THE PRODUCTION OF BENZONITRILE, WHICH COMPRISES CONTACTING TOLUENE WITH AMMONIA, IN THE GASEOUS PHASE, IN AN ADIABATIC REACTION ZONE, AT TEMPERATURES VARYING BETWEEN ABOUT 800* F. AND ABOUT 1250* F., AND IN THE PRESENCE OF A CATALYST COMPRISING A MOLYBDENUM OXIDE; THE IMPROVEMENT WHICH INCLUDES INTRODUCING WATER INTO SAID ADIABATIC REACTION ZONE.
References Cited (Backward Citations)
US2417893A
Cited
US2450632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |