Patent US2664433A successfully refreshed from Google Patents.
US2664433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic synthesis of organic compounds
Assignee: Phillips Petroleum Co
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Filing: 1949-05-20
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Granted: 1953-12-29
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Expires: 1969-05-20
Abstract
No abstract record available.
Inventors
- 👤 Thomas B Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:26
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/49; C07C45/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A METHOD OF SYNTHESIZING ALIPHATIC ORGANIC COMPOUNDS BY REACTION OF HYDROGEN WITH CARBON MONOXIDE, WHICH COMPRISES PASSING A GAS COMPRISING HYDROGEN AND CARBON MONOXIDE UPWARDLY THROUGH SEVERAL INDIVIDUAL FLUIDIZED BEDS OF POWDERED SYNTHESIS CATALYST MAINTAINED ONE ABOVE THE OTHER IN A REACTION ZONE MAINTAINED AT SYNTHESIS CONDITIONS, INTRODUCING REACTIVATED CATALYST INTO THE UPPERMOST OF SAID BEST, INTRODUCING CATALYST REACTIVATED TO A LESSER EXTENT INTO THE NEXT LOWER OF SAID BEDS, AND INTRODUCING INTO EACH OF THE REMAINDER OF SAID BEDS CATALYST ACTIVATED TO SUCCESSIVELY LESSER EXTENTS, THE LEAST ACTIVATED CATALYST BEING INTRODUCED INTO THE LOWERMOST OF SAID BEDS, FLOWING CATALYST DOWNWARDLY THROUGH SAID SEVERAL BEDS TO MAINTAIN A FIXED HEIGHT OF CATALYST IN EACH BED, WITHDRAWING CATALYST AT LEAST PARTIALLY DEACTIVATED FROM THE LOWERMOST OF SAID BEDS AND PASSING SAME INTO THE TOPMOST OF SEVERAL INDIVIDUAL SUPERIMPOSED FLUIDIZED BEDS IN A REACTIVATION ZONE, PASSING REACTIVATION GAS UPWARDLY THROUGH SAID BEDS IN SAID REACTIVATION
Claim 2
Independent Claim
153 words
A METHOD OF SYNTHESIZING ALIPHATIC ORGANIC COMPOUNDS BY REACTION OF HYDROGEN WITH CARBON MONOXIDE, WHICH COMPRISES PASSING A GAS COMPRISING HYDROGEN AND CARBON MONOXIDE UPWARDLY THROUGH SEVERAL INDIVIDUAL FLUIDIZED BEDS OF POWDERED SYNTHESIS CATALYST MAINTAINED ONE ABOVE THE OTHER IN A REACTION ZONE MAINTAINED AT SYNTHESIS CONDITIONS, INTRODUCING REACTIVATED CATALYST INTO THE UPPERMOST OF SAID BEST, INTRODUCING CATALYST REACTIVATED TO A LESSER EXTENT INTO THE NEXT LOWER OF SAID BEDS, AND INTRODUCING INTO EACH OF THE REMAINDER OF SAID BEDS CATALYST ACTIVATED TO SUCCESSIVELY LESSER EXTENTS, THE LEAST ACTIVATED CATALYST BEING INTRODUCED INTO THE LOWERMOST OF SAID BEDS, FLOWING CATALYST DOWNWARDLY THROUGH SAID SEVERAL BEDS TO MAINTAIN A FIXED HEIGHT OF CATALYST IN EACH BED, WITHDRAWING CATALYST AT LEAST PARTIALLY DEACTIVATED FROM THE LOWERMOST OF SAID BEDS AND PASSING SAME INTO THE TOPMOST OF SEVERAL INDIVIDUAL SUPERIMPOSED FLUIDIZED BEDS IN A REACTIVATION ZONE, PASSING REACTIVATION GAS UPWARDLY THROUGH SAID BEDS IN SAID REACTIVATION
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |