US2926074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for production of substituted pyridines
Assignee: Phillips Petroleum Co
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Filing: 1957-09-16
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Granted: 1960-02-23
•
Expires: 1977-09-16
Abstract
No abstract record available.
Inventors
- 👤 Donald E Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:22
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/08; C07D213/09; C07D213/10; C07D213/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
AN APPARATUS FOR CONDENSING A CARBONYL COMPOUND WITH AQUEOUS AMMONIA, SAID APPARATUS COMPRISING IN COMBINATION A REACTION VESSEL HAVING AN INLET AND AN OUTLET, MEANS FOR APPLYING HEAT AND MEANS FOR COOLING SAID REACTION VESSEL, PRESSURE REDUCING MEANS OPERABLY CONNECTED IN SAID OUTLET MEANS, MEANS FOR SEPARATILNG UNREACTED AMMONIA FROM REACTANTS, SAID SEPARATING MEANS BEING CONNECTED INTO THE OUTLET OF SAID REACTION VESSEL SUBSEQUENT TO SAILD PRESSURE REDUCING MEANS, MEANS FOR WITHDRAWING THUS SEPARATED AMMONIA, MEANS FOR WITHDRAWING THE REMAINING REACTANTS, MEANS FOR SEPARATING THUS WITHDRAWN REACTANTS INTO ORGANIC PHASE AND WATER PHASE, AN ABSORPTION VESSEL, MEANS FOR INTRODUCING THE WITHDRAWN AMMONIA TO A LOWER SECTION OF SAID ABSORPTION VESSEL, MEANS FOR INTRODUCING WATER FROM SAID WATER PHASE TO AN UPPER SECTION OF SAID ABSORPTION VESSEL, MEANS FOR DETECTING THE LIQUID LEVEL IN SAID ABSORPTION VESSEL, MEANS FOR CONTROLLING FLOW OF WATER TO SAID MEANS FOR INTRODUCING WATER TO SAID UPPER SECTION OF THE ABSORPTION VESSEL, SAID CONTROL MEANS BEING OPERABLY CONNECTED TO SAID LEVEL DETECTING MEANS AND RESPONSIVE TO CHANGES IN LIQUID LEVEL IN SAID ABSORPTION VESSEL, CIRCULATING MEANS FOR WITHDRAWING LIQUID FROM BOTTOM SECTION AND INTRODUCING IT INTO TOP SECTION OF SAID ABSORPTION VESSEL, MEANS FOR REGULAR-
Claim 2
Independent Claim
199 words
AN APPARATUS FOR CONDENSING A CARBONYL COMPOUND WITH AQUEOUS AMMONIA, SAID APPARATUS COMPRISING IN COMBINATION A REACTION VESSEL HAVING AN INLET AND AN OUTLET, MEANS FOR APPLYING HEAT AND MEANS FOR COOLING SAID REACTION VESSEL, PRESSURE REDUCING MEANS OPERABLY CONNECTED IN SAID OUTLET MEANS, MEANS FOR SEPARATILNG UNREACTED AMMONIA FROM REACTANTS, SAID SEPARATING MEANS BEING CONNECTED INTO THE OUTLET OF SAID REACTION VESSEL SUBSEQUENT TO SAILD PRESSURE REDUCING MEANS, MEANS FOR WITHDRAWING THUS SEPARATED AMMONIA, MEANS FOR WITHDRAWING THE REMAINING REACTANTS, MEANS FOR SEPARATING THUS WITHDRAWN REACTANTS INTO ORGANIC PHASE AND WATER PHASE, AN ABSORPTION VESSEL, MEANS FOR INTRODUCING THE WITHDRAWN AMMONIA TO A LOWER SECTION OF SAID ABSORPTION VESSEL, MEANS FOR INTRODUCING WATER FROM SAID WATER PHASE TO AN UPPER SECTION OF SAID ABSORPTION VESSEL, MEANS FOR DETECTING THE LIQUID LEVEL IN SAID ABSORPTION VESSEL, MEANS FOR CONTROLLING FLOW OF WATER TO SAID MEANS FOR INTRODUCING WATER TO SAID UPPER SECTION OF THE ABSORPTION VESSEL, SAID CONTROL MEANS BEING OPERABLY CONNECTED TO SAID LEVEL DETECTING MEANS AND RESPONSIVE TO CHANGES IN LIQUID LEVEL IN SAID ABSORPTION VESSEL, CIRCULATING MEANS FOR WITHDRAWING LIQUID FROM BOTTOM SECTION AND INTRODUCING IT INTO TOP SECTION OF SAID ABSORPTION VESSEL, MEANS FOR REGULAR-
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) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |