US3152005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of pelletized solids
Assignee: Dow Chemical Co
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Filing: 1962-03-29
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Granted: 1964-10-06
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Expires: 1982-03-29
Abstract
No abstract record available.
Inventors
- 👤 Frederic C Tuttle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:38
CPC Classifications
A; A23; A23G; A23G3/00; A23G3/02; A23G3/20; A23G3/2076; A23G3/2084; B; B01; B01J; B01J2/00; B01J2/16; Y; Y10; Y10S; Y10S118/00; Y10S118/05; Y10S159/00; Y10S159/03; Y10S159/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A CONTINUOUS PROCESS FOR THE PREPARATION OF A SOLID MATERIAL IN A PELLETIZED SOLID FORM OF FROM 4 TO 100 TYLER MESH SIZE, FROM AN AQUEOUS SOLUTION OF THE MATERIAL, WHICH COMPRISES PASSING HEATED AIR AT A TEMPERATURE BELOW THE DECOMPOSITION TEMPERATURE OF THE MATERIAL UP THROUGH A CONFINED ZONE OF A PARTICULAR CROSS-SECTIONAL AREA CONTAINING THE MATERIAL IN PARTICLES HAVING AN AVERAGE SIZE IN THE RANGE OF FROM 4 TO 100 TYLER MESH AT A FLOW RATE SUFFICIENT TO FORM THEREOF A FLUIDIZED BED; CONTINUOUSLY INJECTING STEAM INTO THE BED FROM THE OUTER PERIPHERY OF THE BED FROM AT LEAST ONE POINT TRANSVERSELY TO THE UPWARD FLOW OF THE SAID HEATED AIR AT A PRESSURE SUFFICIENT TO OBTAIN A ZONE OF DILUTE PHASE FLUIDIZATION WITHIN THE SO-FLUIDIZED BED FROM EACH POINT OF INJECTION EXTENDING TO NOT MORE THAN 1/3 THE DISTANCE ACROSS THE FLUIDIZED BED, EACH OF SAID DILUTE PHASE FLUIDIZATION ZONES BEING
Claim 2
Dependent Claim
154 words
A CONTINUOUS PROCESS FOR THE PREPARATION OF A SOLID MATERIAL IN A PELLETIZED SOLID FORM OF FROM 4 TO 100 TYLER MESH SIZE, FROM AN AQUEOUS SOLUTION OF THE MATERIAL, WHICH COMPRISES PASSING HEATED AIR AT A TEMPERATURE BELOW THE DECOMPOSITION TEMPERATURE OF THE MATERIAL UP THROUGH A CONFINED ZONE OF A PARTICULAR CROSS-SECTIONAL AREA CONTAINING THE MATERIAL IN PARTICLES HAVING AN AVERAGE SIZE IN THE RANGE OF FROM 4 TO 100 TYLER MESH AT A FLOW RATE SUFFICIENT TO FORM THEREOF A FLUIDIZED BED; CONTINUOUSLY INJECTING STEAM INTO THE BED FROM THE OUTER PERIPHERY OF THE BED FROM AT LEAST ONE POINT TRANSVERSELY TO THE UPWARD FLOW OF THE SAID HEATED AIR AT A PRESSURE SUFFICIENT TO OBTAIN A ZONE OF DILUTE PHASE FLUIDIZATION WITHIN THE SO-FLUIDIZED BED FROM EACH POINT OF INJECTION EXTENDING TO NOT MORE THAN 1/3 THE DISTANCE ACROSS THE FLUIDIZED BED, EACH OF SAID DILUTE PHASE FLUIDIZATION ZONES BEING
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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) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |