Patent US2521538A successfully refreshed from Google Patents.
US2521538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for synthesis of hydrocarbons and the like
Assignee: Texaco Development Corp
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Filing: 1945-06-20
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Granted: 1950-09-05
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Expires: 1965-06-20
Abstract
No abstract record available.
Inventors
- 👤 Harry V Rees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:03
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/0207; C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0455; C07C1/048; C07C29/00; C07C29/15; C07C29/151; C07C29/152; C07C29/153; C07C29/156; Y; Y10; Y10S; Y10S48/00; Y10S48/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN A PROCESS FOR EFFECTING SYNTHESIS OF HYDROCARBONS AND OXYGENATED HYDROCARBONS FROM CARBON MONOXIDE AND HYDROGEN IN THE PRESENCE OF A SOLID SYNTHESIS CATALYST WHEREIN SAID CATALYST IS MAINTAINED STATIONARY WITHIN THE REACTION ZONE AND AT LEAST A PORTION OF THE HEAT LIBERATED BY THE REACTION IS REMOVED BY INDIRECT HEAT EXCHANGE BETWEEN THE CATALYST AND A COOLING LIQUID, THE IMPROVEMENT WHICH COMPRISES DISPOSING SAID SYNTHESIS CATALYST IN A CONTINUOUS PERMEABLE LAYER HAVING A THICKNESS WITHIN THE RANGE OF FROM ABOUT 1/64 TO ABOUT 1 INCH ON ONE SURFACE OF RELATIVELY THIN POROUS VERTICAL SUPPORTING WALL WITHIN THE REACTION ZONE, PASSING A MIXTURE OF CARBON MONOXIDE AND HYDROGEN UNDER SYNTHESIS REACTION CONDITIONS THROUGH SAID LAYER OF SYNTHESIS CATALYST AND THEREAFTER THROUGH SAID WALL THEREBY EFFECTING REACTION OF CARBON MONOXIDE WITH HYDROGEN ACCOMPANIED BY THE LIBERATION OF HEAT CONTINUOUSLY FLOWING A LIQUID COOLANT AT
Claim 2
Dependent Claim
143 words
IN A PROCESS FOR EFFECTING SYNTHESIS OF HYDROCARBONS AND OXYGENATED HYDROCARBONS FROM CARBON MONOXIDE AND HYDROGEN IN THE PRESENCE OF A SOLID SYNTHESIS CATALYST WHEREIN SAID CATALYST IS MAINTAINED STATIONARY WITHIN THE REACTION ZONE AND AT LEAST A PORTION OF THE HEAT LIBERATED BY THE REACTION IS REMOVED BY INDIRECT HEAT EXCHANGE BETWEEN THE CATALYST AND A COOLING LIQUID, THE IMPROVEMENT WHICH COMPRISES DISPOSING SAID SYNTHESIS CATALYST IN A CONTINUOUS PERMEABLE LAYER HAVING A THICKNESS WITHIN THE RANGE OF FROM ABOUT 1/64 TO ABOUT 1 INCH ON ONE SURFACE OF RELATIVELY THIN POROUS VERTICAL SUPPORTING WALL WITHIN THE REACTION ZONE, PASSING A MIXTURE OF CARBON MONOXIDE AND HYDROGEN UNDER SYNTHESIS REACTION CONDITIONS THROUGH SAID LAYER OF SYNTHESIS CATALYST AND THEREAFTER THROUGH SAID WALL THEREBY EFFECTING REACTION OF CARBON MONOXIDE WITH HYDROGEN ACCOMPANIED BY THE LIBERATION OF HEAT CONTINUOUSLY FLOWING A LIQUID COOLANT AT
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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) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |