US2789980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing cyanopyridine carboxamide
Assignee: Warner Lambert Co LLC
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Filing: 1954-08-04
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Granted: 1957-04-23
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Expires: 1974-08-04
Abstract
No abstract record available.
Inventors
- 👤 John V Scudi
- 👤 Bernard F Duesel
- 👤 Mayurnik George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:10
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/84
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
PROCESS FOR THE PRODUCTION OF 6-CYANO-PYRIDINE-3CARBOXAMIDE, WHICH COMPRISES BRINGING A VAPOR MIXTURE CONTAINING 6-METHYL-3-ETHYL-PYRIDINE, AMMONIA AND AN OXYGEN-CONTAINING GAS INTO CONTACT WITH A CATLYST SELECTED FROM THE GROUP CONSISTING OF THE OXIDES AND SALTS OF ELEMENTS OF THE FIFTH, SIXTH AND EIGHTH GROUPS OF THE PERIODIC SYSTEM, SAID VAPOR MIXTURE CONTAINING FROM ABOUT 3.2 TO 5.6 MOLS OF OXYGEN AND MORE THAN ONE MOL OF AMMONIA FOR EACH MOL OF 6-METHYL-3-ETHYL-PYRIDINE, AND BEING MAINTAINED DURING CONTACT AT AN ELEVATED REACTION TEMPERATURE OF UP TO ABOUT 375*C.
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) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |