US2605264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of pyridines
Assignee: Shell Development Co
•
Filing: 1947-06-06
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Granted: 1952-07-29
•
Expires: 1967-06-06
Abstract
No abstract record available.
Inventors
- 👤 Hoog Han
- 👤 Engel Willem Frederik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:10
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
66 words
THE PROCESS FOR THE PRODUCTION OF BETA-PICOLINE WHICH COMPRISES BRINGING ALLYL ALCOHOL IN ADMIXTURE WITH AMMONIA INTO DIRECT CONTACT WITH A CATALYST COMPRISING ALUMINA AND COPPER AT A TEMPERATURE OF ABOUT 300* C. TO ABOUT 500* C. AND AT A RATE OF AT LEAST 0.3 KG. OF ALLYL ALCOHOL PER LITER OF CATALYST PER HOUR WHILE IN INDIRECT HEAT EXCHANGE WITH A LIQUID HEAT CONTROLLING MEDIUM.
Claim 2
Dependent Claim
66 words
THE PROCESS FOR THE PRODUCTION OF BETA-PICOLINE WHICH COMPRISES BRINGING ALLYL ALCOHOL IN ADMIXTURE WITH AMMONIA INTO DIRECT CONTACT WITH A CATALYST COMPRISING ALUMINA AND COPPER AT A TEMPERATURE OF ABOUT 300* C. TO ABOUT 500* C. AND AT A RATE OF AT LEAST 0.3 KG. OF ALLYL ALCOHOL PER LITER OF CATALYST PER HOUR WHILE IN INDIRECT HEAT EXCHANGE WITH A LIQUID HEAT CONTROLLING MEDIUM.
References Cited (Backward Citations)
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Cited
US1900382A
Cited
GB332623A
Cited
GB334193A
Cited
DE565798C
Cited
DE569630C
Cited
US2011317A
Cited
GB516586A
Cited
GB534494A
Cited
US2413598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |