Patent US2552308A successfully refreshed from Google Patents.
US2552308A
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Low-pressure hydrocarbon synthesis process
Assignee: Standard Oil Development Co
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Filing: 1949-06-16
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Granted: 1951-05-08
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Expires: 1969-06-16
Abstract
No abstract record available.
Inventors
- 👤 Fred J Buchmann
- 👤 Jr Alexis Voorhies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:50
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/043; C07C1/0435; C07C1/044; C07C2521/00; C07C2521/18; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/745; C07C2527/00; C07C2527/20; C07C2527/232
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
AN IMPROVED PROCESS FOR CONVERTING CO AND H2 TO NORMALLY LIQUID HYDROCARBONS OF HIGH OLEFIN CONTENT WHICH COMPRISES CONTACTING CO AND H2 IN SYNTHESIS PROPORTIONS UNDER SYNTHESIS CONDITIONS COMPRISING PRESSURES OF FROM ABOUT 50 TO ABOUT 100 P.S.I.G. WITH A DENSE TURBULENT FLUIDIZED MASS OF FINELY DIVIDED SYNTHESIS CATALYST, SAID CATALYST COMPRISING AN ACTIVATED CARBON
Claim 2
Dependent Claim
55 words
AN IMPROVED PROCESS FOR CONVERTING CO AND H2 TO NORMALLY LIQUID HYDROCARBONS OF HIGH OLEFIN CONTENT WHICH COMPRISES CONTACTING CO AND H2 IN SYNTHESIS PROPORTIONS UNDER SYNTHESIS CONDITIONS COMPRISING PRESSURES OF FROM ABOUT 50 TO ABOUT 100 P.S.I.G. WITH A DENSE TURBULENT FLUIDIZED MASS OF FINELY DIVIDED SYNTHESIS CATALYST, SAID CATALYST COMPRISING AN ACTIVATED CARBON
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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) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |