US2593338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contacting solid particles with gaseous fluids
Assignee: Standard Oil Development Co
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Filing: 1947-01-28
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Granted: 1952-04-15
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Expires: 1967-01-28
Abstract
No abstract record available.
Inventors
- 👤 Henry J Ogorzaly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:16
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; B01J8/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
IN A PROCESS WHEREIN POWDERED CONTACT MATERIAL IS MAINTAINED IN A ZONE IN A DENSE FLUIDIZED CONDITION AND IS WITHDRAWN FROM SAID ZONE INTO A STANDPIPE TO FORM A FLUIDIZED DENSE COLUMN PRODUCING HYDROSTATIC PRESSURE AT ITS BASE AND THE RATE OF WITHDRAWAL OF POWDERED MATERIAL FROM THE BASE OF SAID COLUMN IKS CONTROLLED BY A VALVE ACROSS WHICH A DECREASE IN PRESSURE IN THE DIRECTION OF SOLIDS FLOW OCCURS DURING WITHDRAWAL OF SAID POWDERED MATERIAL AND THE POWDERED MATERIAL IS THEN PASSED AS A CONFINED STREAM TO A SECOND ZONE, THE IMPROVEMENT WHICH COMPRISES PASSING THE POWDERED MATERIAL THROUGH A CONSTRICTION IN THE CONFINED STREAM LEAVING SAID VALVE, INTRODUCING A GASEOUS STREAM BETWEEN SAID CONSTRICTION AND SAID VALVE AND PROPORTIONING THE
References Cited (Backward Citations)
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 |