US2615022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of substituted pyridines
Assignee: Phillips Petroleum Co
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Filing: 1949-12-27
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Granted: 1952-10-21
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Expires: 1969-12-27
Abstract
No abstract record available.
Inventors
- 👤 John E Mahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:52
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/08; C07D213/09; C07D213/10; C07D213/12; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
THE PROCESS FOR PREPARING 2-METHYL-5-ETHYL PYRIDINE WHICH COMPRISES CONTACTING PARALDEHYDE WITH AMMONIA IN THE PRESENCE OF A FLUORINE-CONTAINING CATALYST SELECTED FROM THE GROUP CONSISTING OF AMMONIUM FLUORIDE, AMMONIUM BIFLUORIDE, BOREN TRIFLUORIDE, BORON TRIFLUORIDEAMMONIA COMPLEX, BORON TRIFLUORIDE- AMINE COMPLEXES, SALTS OF FLUOROBORIC ACID, SALTS OF THE FLUOROPHOSPHORIC ACIDS, SALTS OF TRIFLUORACETIC ACID, AND SALTS OF FLUOILICIC ACID AT A TEMPERATURE WITHIN THE RANGE OF 300 TO 650* F. AT A PRESSURE SUFFICIENT TO MAINTAIN THE REACTION MIXTURE IN LIQUID PHASE AND EMPLOYING FROM 0.2 TO 10.0 WEIGHT PER CENT OF CATALYST BASED ON THE PARALDEHYDE.
References Cited (Backward Citations)
DE349184C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |