US2706730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of 2-methyl-5-ethylpyridine from alkyl vinyl ethers and ammonia
Assignee: Phillips Petroleum Co
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Filing: 1952-01-07
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Granted: 1955-04-19
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Expires: 1972-01-07
Abstract
No abstract record available.
Inventors
- 👤 John E Mahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:38
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/08; C07D213/09; C07D213/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
IN THE FORMATION OF 2-METHYL-5-ETHYLPYRIDINE BY REACTION OF AMMONIA WITH AN ALKENYL ALKYL ETHER SELECTED FROM THE GROUP CONSISTING OF METHYL VINYL ETHER, ETHYL VINYL ETHER, PROPYL VINYL ETHER AND ISOPROPYL VINYL ETHER, THE IMPROVEMENT WHICH COMPRISES EFFECTING SAID REACTION IN THE PRESENCE OF A FLUORINE-CONTAINING COMPOUND WHICH LIBERATES HYDROGEN FLUORIDE BEFORE OR DURING THE REACTION.
Claim 2
Dependent Claim
56 words
IN THE FORMATION OF 2-METHYL-5-ETHYLPYRIDINE BY REACTION OF AMMONIA WITH AN ALKENYL ALKYL ETHER SELECTED FROM THE GROUP CONSISTING OF METHYL VINYL ETHER, ETHYL VINYL ETHER, PROPYL VINYL ETHER AND ISOPROPYL VINYL ETHER, THE IMPROVEMENT WHICH COMPRISES EFFECTING SAID REACTION IN THE PRESENCE OF A FLUORINE-CONTAINING COMPOUND WHICH LIBERATES HYDROGEN FLUORIDE BEFORE OR DURING THE REACTION.
References Cited (Backward Citations)
FR893375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-18 | 1958-10-18 | 1959-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-18 | 1962-10-18 | 1963-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-18 | 1966-10-18 | 1967-04-19 | $7700.00 | Window Closed / Lapsed |