Patent US2593250A successfully refreshed from Google Patents.
US2593250A
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Hydrocarbon synthesis
Assignee: Standard Oil Development Co
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Filing: 1947-07-30
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Granted: 1952-04-15
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Expires: 1967-07-30
Abstract
No abstract record available.
Inventors
- 👤 James F Black
- 👤 Kenneth K Kearby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:20
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/0445; B; B01; B01J; B01J25/00; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/745
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
AN IMPROVED PROCESS FOR PRODUCING VALUABLE CONVERSION PRODUCTS FROM CO AND H2 IN THE PRESENCE OF IRON CATALYSTS WHICH COMPRISES CONTACTING SAID CO AND H2 IN SYNTHESIS PROPORTIONS AT SYNTHESIS CONDITIONS WITH CATALYST PARTICLES CONTAINING FERROSILICON FROM WHICH ABOUT 1.5 TO 3 WEIGHT PER CENT OF SILICON BASED ON THE TOTAL CATALYST, HAS BEEN REMOVED BY ETCHING WITH A CAUSTIC ALKALI SOLUTION AND RECOVERING A PRODUCT CONTAINING NORMALLY LIQUID HYDROCARBONS.
Claim 2
Dependent Claim
70 words
AN IMPROVED PROCESS FOR PRODUCING VALUABLE CONVERSION PRODUCTS FROM CO AND H2 IN THE PRESENCE OF IRON CATALYSTS WHICH COMPRISES CONTACTING SAID CO AND H2 IN SYNTHESIS PROPORTIONS AT SYNTHESIS CONDITIONS WITH CATALYST PARTICLES CONTAINING FERROSILICON FROM WHICH ABOUT 1.5 TO 3 WEIGHT PER CENT OF SILICON BASED ON THE TOTAL CATALYST, HAS BEEN REMOVED BY ETCHING WITH A CAUSTIC ALKALI SOLUTION AND RECOVERING A PRODUCT CONTAINING NORMALLY LIQUID HYDROCARBONS.
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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) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |