US2644829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preconditioning hydrocarbon synthesis catalyst
Assignee: Phillips Petroleum Co
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Filing: 1948-12-06
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Granted: 1953-07-07
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Expires: 1968-12-06
Abstract
No abstract record available.
Inventors
- 👤 Hogan John Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:52
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/16; B01J37/18; B01J23/00; B01J23/70; B01J23/76; B01J23/78; B01J27/00; B01J27/20; B01J27/22; C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/0445; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/745
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
IN A PROCESS FOR THE SYNTHESIS OF ORGANIC COMPOUNDS FROM CARBON MONOXIDE-HYDROGEN MIXTURES IN WHICH SAID MIXTURES ARE CONTACTED WITH A FINELY DIVIDED FLUIDIZED CATALYST HAVING A HIGH INITIAL ACTIVITY, THE METHOD OF MODIFYING SUCH INITIAL ACTIVITY WHICH COMPRISES CONTACTING SAID CATALYST FOR A PERIOD LIMITED TO FROM 5 TO 15 HOURS WITH A SYNTHESIS GAS COMPRISING CARBON MONOXIDE AND HYDROGEN AT A SYNTHESIS REACTION TEMPERATURE WITHIN THE RANGE OF BETWEEN 180* C. AND 340* C. BASED UPON A PARTICULAR CATALYST UTILIZED, AT A PRESSURE NOT OVER FIVE ATMOSPHERES AND A SPACE VELOCITY OF SAID SYNTHESIS GAS LOWER THAN THAT REQUIRED TO EFFECT THE SYNTHESIS REACTION UNDER THE CONDITIONS USED, AND GRADUALLY INCREASING SAID PRESSURE AND SPACE VELOCITY AS THE INITIAL ACTIVITY OF SAID CATALYST DECREASES UNTIL A PRESSURE AND A SPACE VELOCITY ARE ATTAINED AT WHICH THE SYNTHESIS REACTION IS EFFECTED.
Claim 2
Dependent Claim
142 words
IN A PROCESS FOR THE SYNTHESIS OF ORGANIC COMPOUNDS FROM CARBON MONOXIDE-HYDROGEN MIXTURES IN WHICH SAID MIXTURES ARE CONTACTED WITH A FINELY DIVIDED FLUIDIZED CATALYST HAVING A HIGH INITIAL ACTIVITY, THE METHOD OF MODIFYING SUCH INITIAL ACTIVITY WHICH COMPRISES CONTACTING SAID CATALYST FOR A PERIOD LIMITED TO FROM 5 TO 15 HOURS WITH A SYNTHESIS GAS COMPRISING CARBON MONOXIDE AND HYDROGEN AT A SYNTHESIS REACTION TEMPERATURE WITHIN THE RANGE OF BETWEEN 180* C. AND 340* C. BASED UPON A PARTICULAR CATALYST UTILIZED, AT A PRESSURE NOT OVER FIVE ATMOSPHERES AND A SPACE VELOCITY OF SAID SYNTHESIS GAS LOWER THAN THAT REQUIRED TO EFFECT THE SYNTHESIS REACTION UNDER THE CONDITIONS USED, AND GRADUALLY INCREASING SAID PRESSURE AND SPACE VELOCITY AS THE INITIAL ACTIVITY OF SAID CATALYST DECREASES UNTIL A PRESSURE AND A SPACE VELOCITY ARE ATTAINED AT WHICH THE SYNTHESIS REACTION IS EFFECTED.
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) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |