Patent US2769811A successfully refreshed from Google Patents.
US2769811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of alkenyl pyridines
Assignee: Phillips Petroleum Co
•
Filing: 1951-08-30
•
Granted: 1956-11-06
•
Expires: 1971-08-30
Abstract
No abstract record available.
Inventors
- 👤 John E Mahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:11
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A DEHYDROGENATION PROCESS WHICH COMPRISES PASSING AN ALKYL PYRIDINE SELECTED FROM THE GROUP CONSISTING OF 2-METHYL-5-ETHYLPYRIDINE, 2-ETHYL-4-ETHYLPYRIDINE, 2EHTYLPYRIDINE, 2-ETHYL-5-ETHYLPRIDINE, 3-ETHYLPYRIDINE, 3PROPYLPYRIDINE, AND 2-N-AMYLPYRIDINE OVER A CATALYST COMPRISING A MAJOR PROPORTION BY WEIGHT OF CHRONIUM OXIDE, AND A MINOR PROPORTIOM BY WEIGHT OF A CHRONIUM OXIDE, AND A MINOR PROPORTION BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL OXIDES HYDROXIDES, AND CARBONATES AT A TEMPERATURE IN THE RANGE FROM 1000* TO 1300* F. TO THEREBY PRODUCE AN ALKENYL PYRIDINE CORRESPONDING TO SAID ALKYL PYRIDINE.
Claim 2
Dependent Claim
88 words
A DEHYDROGENATION PROCESS WHICH COMPRISES PASSING AN ALKYL PYRIDINE SELECTED FROM THE GROUP CONSISTING OF 2-METHYL-5-ETHYLPYRIDINE, 2-ETHYL-4-ETHYLPYRIDINE, 2EHTYLPYRIDINE, 2-ETHYL-5-ETHYLPRIDINE, 3-ETHYLPYRIDINE, 3PROPYLPYRIDINE, AND 2-N-AMYLPYRIDINE OVER A CATALYST COMPRISING A MAJOR PROPORTION BY WEIGHT OF CHRONIUM OXIDE, AND A MINOR PROPORTIOM BY WEIGHT OF A CHRONIUM OXIDE, AND A MINOR PROPORTION BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL OXIDES HYDROXIDES, AND CARBONATES AT A TEMPERATURE IN THE RANGE FROM 1000* TO 1300* F. TO THEREBY PRODUCE AN ALKENYL PYRIDINE CORRESPONDING TO SAID ALKYL PYRIDINE.
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) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |