Patent DE342294C successfully refreshed from Google Patents.
US2592123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of pyridine nitriles
Assignee: ExxonMobil Oil Corp
•
Filing: 1948-09-28
•
Granted: 1952-04-08
•
Expires: 1968-09-28
Abstract
No abstract record available.
Inventors
- 👤 William L Denton
- 👤 Richard B Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:57
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/84; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
THE PROCESS FOR PRODUCING ISONICOTINIC NITRILE, WHICH COMPRISES CONTACTING, AS SOLE REACTANTS, GAMMA-PICOLINE WITH AMMONIA, IN GASEOUS PHASE, AT TEMPERATURES FALLING WITHIN THE RANGE VARYING BETWEEN ABOUT 850* F. AND ABOUT 1250* F., IN THE PRESENCE OF A CATALYST CONTAINING A MOLYBDENUM OXIDE.
Claim 2
Dependent Claim
43 words
THE PROCESS FOR PRODUCING ISONICOTINIC NITRILE, WHICH COMPRISES CONTACTING, AS SOLE REACTANTS, GAMMA-PICOLINE WITH AMMONIA, IN GASEOUS PHASE, AT TEMPERATURES FALLING WITHIN THE RANGE VARYING BETWEEN ABOUT 850* F. AND ABOUT 1250* F., IN THE PRESENCE OF A CATALYST CONTAINING A MOLYBDENUM OXIDE.
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) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |