US3754078A
Expired / Lapsed
US
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Method for obtaining uniform distribution of gas flow through catalyst beds
Assignee: Patheon Austria GmbH and Co KG
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Filing: 1971-04-20
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Granted: 1973-08-21
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Expires: 1991-04-20
Abstract
Abstract UNIFORM DISTRIBUTION OF GAS IN ACHIEVED IN CATALYST BED IN WHICH THE FLOW IS RADIAL IN REACTORS FOR CATALYST EXOTHERMIC HIGH PRESSURES SYNTHESES BY GRADATION OF THE FREE SURFACE EXPOSED TO FLOW AND SERVING FOR THE PASSAGE OF GAS INTO OR OUT OF THE CATALYST LAYER SO THAT IT IS 10 TO 25 TIMES GREATER AT THE FIRST QUARTER OF THE CATALYST LAYER THAN IS THE FREE AREA EXPOSED TO FLOW AT THE REMAINING PART OF THE CATALYST LAYER.
Inventors
- 👤 H Hinrichs
- 👤 H Lehner
- 👤 A Wagner
- 👤 F Faschinger
- 👤 J Pesl
- 👤 J Niedetzky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:31
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/02; C01C1/04; C01C1/0405; C01C1/0411; B; B01; B01J; B01J8/00; B01J8/02; B01J8/0207; B01J8/0214; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
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References Cited (Backward Citations)
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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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |