Patent US2684975A successfully refreshed from Google Patents.
US2684975A
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Use of carbon dioxide in hydrocarbon synthesis
Assignee: Stanolind Oil and Gas Co
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Filing: 1950-12-30
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Granted: 1954-07-27
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Expires: 1970-12-30
Abstract
No abstract record available.
Inventors
- 👤 Clifton G Frye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:55
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0455; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/745
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
IN A PROCESS FOR TH SYNTHESIS OF LIQUID HYDROCARBONS WHEREIN A FEED GAS CONSISTING CHIEFLY OF CARBON MONOXIDE AND HYDROGEN IS INTRODUCED INTO A GENERALLY VERTICALLY POSITIONED REACTION ZONE HAVING A HYDROCARBON SYNTHESIS CATALYST BED THEREIN AND UNDER KNOWN CONDITIONS OF HYDROCARBON SYNTHESIS, THE STEP WHICH COMPRISES INJECTING A GASEOUS STREAM CONSISTING ESSENTIALLY OF CARBON DIOXIDE NOT IN EXCESS OF ABOUT 75 MOL PER CENT (TOTAL FEED BASIS) INTO SAID REACTION ZONE AT A POINT IN SAID ZONE WHICH IS BEYOND THE GAS INLET SIDE OF SAID BED AT LEAST A DISTANCE CORRESPONDING TO ABOUT ONE THIRD OF THE LENGTH OF SAID BED.
Claim 2
Dependent Claim
103 words
IN A PROCESS FOR TH SYNTHESIS OF LIQUID HYDROCARBONS WHEREIN A FEED GAS CONSISTING CHIEFLY OF CARBON MONOXIDE AND HYDROGEN IS INTRODUCED INTO A GENERALLY VERTICALLY POSITIONED REACTION ZONE HAVING A HYDROCARBON SYNTHESIS CATALYST BED THEREIN AND UNDER KNOWN CONDITIONS OF HYDROCARBON SYNTHESIS, THE STEP WHICH COMPRISES INJECTING A GASEOUS STREAM CONSISTING ESSENTIALLY OF CARBON DIOXIDE NOT IN EXCESS OF ABOUT 75 MOL PER CENT (TOTAL FEED BASIS) INTO SAID REACTION ZONE AT A POINT IN SAID ZONE WHICH IS BEYOND THE GAS INLET SIDE OF SAID BED AT LEAST A DISTANCE CORRESPONDING TO ABOUT ONE THIRD OF THE LENGTH OF SAID BED.
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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) | 1957-07-26 | 1958-01-25 | 1958-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-26 | 1962-01-25 | 1962-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-26 | 1966-01-25 | 1966-07-27 | $7700.00 | Window Closed / Lapsed |